noby76

Yes, I read it twice, because I had to be sure I wasn't imagining it! The effect is nothing like a supercharger - no matter who writes that it is. All that webpage proves is you are susceptible to marketing PR, no matter how ridiculous it is. And you know nothing about engines. VVTI (ASCI) works by varying (advancing/retarding - or speeding up and slowing down, for those that clearly don't understand) the inlet cam. At certain revs, the cam speeds up, meaning the inlet valves open and close quicker. Try it yourself with your mouth - breath in an out 1once a second, and then do it twice a second. Your mouth is now VVTI equipped! On some cars, they may have auxilary inlet valves that under normal driving aren't needed, but when required, they open and close too. Either way, the effect is the same - the engine sucks in more air. More air require more fuel, and more air + more fuel = more go. But in no way is that ANYTHING like a supercharger, OR it's effect. A supercharger, and a turbo charger, works by drawing in outside air, compressing it with rotor blades, making it denser, thus more air per cubic volume, and forcing it into the engine. The engine has no choice but to take it. Since the air is denser and takes up less space, more oxygen is crammed into any given space - add more fuel and you have more bang. Simply opening and closing inlet valves, or opening secondary inlet valves, does not mean the engine can contain any more air, because the air is not compressed. It's still 100 parts per volume rather than say 150 parts per volume. So back to what you, and Lexus, are saying - variable valve timing is NOTHING like supercharging, or the supercharging effect. matt(mr know it all) if you read my original post i said INTAKE PORTS and not intake valves. VVTi varies the intake valves and ACIS varies the intake ports or should i say 'intake manifold' they are two different things and as a mechanic you should that valves are different from ports(manifold)..hope you dont end up breaking a customers car by changing valves instead of ports(manifold) :D . like i said previously the effect was like a supercharger but not quite.. in other words yes its not a full blown supercharger but gives a slight effect like one i.e. 'a kick' at a certain rpm where more power and torque is unleashed to the car. listen and read carefully to what people say before you start ranting ok.

an IS300 has the same body shell and alloys as an IS200. The TTE Kit was as option which adds sport body kit and 18" wheels so for me to make thigns clear for the OP, i metioned TTE IS300 to differetiate it between the standard IS300 because the difference lies in the bodykit and the 18"wheels. Is it clear for you matt?? Oh, so what you actually meant was "the optional 18" wheels supplied by Lexus came with 225/40-18 tyres" then. Should have just said so instead of yet again wording things that will confuse new comers that don't know there's no such thing as a "TTE IS200/300". No wonder people try and command a higher price for IS' with TTE bodykits on if they've all been told it's a special edition/version get a life matt

Premium fuels like BP Ultimate, Shell Vpower, Esso Super already have high concentrations of these cleaning additives already formulated in them so when I need to clean my enmgine system all i do is fill up with V power or Esso Super continusly for about a month and engine and fuel systems will be cleaned. prices of fuels depends on where one lives and Shell V power is currenlty at 139.9p per litre...

matt do some research before you start typing ok. http://www.lexus.com...S.asp?model=All Thank you, that web page has really made me laugh! Does it/you mean to tell me if I breath through my nose, and then open my mouth too its like I have a supercharger strapped to my face? Do you understand how a supercharger works? It compresses air and then forces it into the engine. That's called forced induction. The IS engine is a naturally aspirated engine - it isn't equipped with a turbo or supercharger. Please, I'd love you to explain to me how the naturally aspirated engine can become forced induction by opening the intake valves for longer, or even opening more intake valves at any given time. I mean are you saying a 16 valve engine is supercharged because it has more intake valves than an 8 valve engine? Again, do please stop talking drivel Have you even read the info in the link?? and i quote 'The effect is a little like that of a supercharger. Normally, this extra rush of air happens at only one particular engine speed.' this is from Lexus not me...

matt do some research before you start typing ok. http://www.lexus.com...S.asp?model=All Interesting! Never heard of ACIS before... yep Chris and that was from the horses mouth maybe matt needs to school himself before he starts typing bull.

an IS300 has the same body shell and alloys as an IS200. The TTE Kit was as option which adds sport body kit and 18" wheels so for me to make thigns clear for the OP, i metioned TTE IS300 to differetiate it between the standard IS300 because the difference lies in the bodykit and the 18"wheels. Is it clear for you matt??

matt do some research before you start typing ok. http://www.lexus.com.bh/technology_explorer/acoustic_control_induction_system_ACIS.asp?model=All

congrats on your purchase lexuslover that was a big change of mind from the comfy limo LS400 to the sporty adrelaline IS200 either way you wont be disappointed. as Chris confirmed the performance is not mind blowing thats if you are used to quick fast cars but if you ever need a bit more power IS300 will be waiting for you with a Supra engine under the bonnet :D and that packs the punch IS200 lacks but saying that i have seen a couple of guys hit 60 in 8 secs and do 140mph in the IS200 so still holds its own by todays standards for a 2ltr. just to correct Chris VVT-i is always on and does not kick in at a certain rpm like VVTL-i and VTEC's found in Toyota Celica and Honda R's. the kick you feel at around 3800 or 4200rpm is a surge of air rushing into the engine due to secondary intake ports opening to allow more air at higher rpm for more torque and power its like a mini super charge but not quite and known as Acoustic Control Induction system. As Chris confirmed the Kenwood is after market but you can always buy a second hand OE IS 6 changer from ebay will save you the hassle of swaping round cd's everytime...

TTE IS300 comes with 225 40 ZR18's from factory and mine does not scrap arches.

people not in the know always say 'Its just a Toyota' and as abs66 confirmed long may they keep thinking that way as I wouldnt want to see Lexus brand flooded into the market like BMW and Audi...great cars but every man and his dog drives one so they are nothing special anymore.

certainly not knocking it Stevet it always surprises me the way it drives and how it delivers its power! I suppose it didnt really sell becuase every one wanted to be seen in a 330 BMW or 3.0 Audi quattro...the on paper figures doesnt sound exciting but drive one in sport mode and its a totally different car!! ISF betters it tho...

dont rub it in stevet...was at Lexus Milton Keynes last week and saw the 2012 ISF in the metal and up close both inside and out with with the 50K price tag next to it !! as Steve said, I am also waiting for my 6 numbers to drop and will be driving a stealthy looking ISF with tinted windows black sport rims and red ISF calipers all round ...and when am bored, I will jump into my backup car which will be a supped up Nissan GTR with 1000bhp... but all i can do for now is enjoy my IS300 and dream on...

you lot will think I am crazy but as i confirmed earlier in this thread, this issue was cured by me using a high octane fuel Shell V power for that matter. as others, I also thought ti was my battery or spark plugs so changed my plugs to OEM Toyota ones and same as the battery aswell but no joy. was running a fuel test and during my V power test the car starts up in cold morning instantly with no hesitation. I am now using Shell normal unleaded and the symptons have re surfaced again to being sluggish to start. mine is not that severe so doesnt really bother me i can live with it.

Hi Allister, this is not the first time this topic has been raised have a read at this http://www.lexusownersclub.co.uk/forum/index.php?showtopic=78890 . all car manufactures fuel consumption figures are achieved using the best ways possible to extract more frugalness/economy from the engines be it diesel, petrol or hybrid powered cars during official mpg testing but in real world driving we all know figures could either exceed or decrease by 5 - 10 mpg depending on a cars engine health and ones driving style and even the roads and time at which one drives can contribute to this factor. dont forget an RX450H weighs in at over 2000kg and if your journeys does not require the car running on the hybrid batteries say 70-80% of the time in urban driving then I am afraid you will not achieve the stated urban figures. your quoted figure of 24-25mpg sounds about right as the car is running mostly off the engine rather than the batteries. although you have achieved close to the stated urban figures in your Merc and Range Rover google or log onto other car forumns and you will read threads of owners not achieving close to the stated figures in thier Diesel cars aswell. I mean i dont drive like Miss Daisy nor do i drive like i stole my IS300 but on a good day i could achive 33 mpg combined driving from my IS300 and on a bad day i get 22mpg on the same combined cycle driving all boils down to my driving style at that time. I am not saying you or the wife races the RX everytime you get into the car but maybe the journeys you make does not really suit the car to extract more from the hybrid system to give good mpg. all i say is hybrid works best in highly congested places like London where more stop and start driving is experienced and if one does not live or drive in those areas then you wont reap the benefits of going hybrid as you will spend most of the time on the 3.5 litre V6 engine pulling a car weighing over 2000kg.

sounds good panya where abouts are you lot meeting will need to check my calendar first. nice one Jasons must admit wasnt a fun of beige, granite sky or Green colured Lexus's but after seeing a few in the metal, i now think they look quite nice..more yours which has the stealthy look to it :)

Yes but Dinan is a well established BMW tuner with over 30years experience in tuning industry, they are just like Alpina company which Turbo charges the BMW's but this company you had in your thread I am not too sure of and if I recall; to chip a car is around £300 from Superchips in UK so £20 will be a no no from me. Apparantely EU/US chip tuning companies say Denso ECU codes found in Lexus are one of the if not the most complex ECU's to crack hence you dont see many guys on here chipping thier Lexus's on like Bosch written ECU's found in BM's, VW's, Audi's which are not so complex for Chip tuning companies to crack. If you want a bit more responsivenes you can fit a short shifter for your gears, a lighter flywheel and a sport clutch but for out and out power and torque; well see my previous post.

yoou arrre nooot aloooone I am heeeere with yooou!! RIP Michael Jackson looking nice in that golden colour with TTE kit mate...

I echo what lexus loon is saying to squeeze an extra 5-10bhp from the IS200 will take more than a performance air filter and catback exhaust and both of these mods are worth more than the £20 being charged by this company for a "chip". infact a K&N panel air filter costs more than this "chip". I will say dont waste your money on this as it wont do anything to your IS. only way to make the IS200 quicker and rapid is Turbo or Supercharger which cost money or just do what i did and opt for the cheaper option and go for an IS300 or Altezza RS200. having come from a V6 ford Cougar with 170bhp the IS200 on paper performance figures wasnt quick enough for me so went for the bigger engined IS300 which packs more punch and torque and works out cheaper than buying a Turbo/Supercharge kit and performance exhaust upgrades just to get the IS200 to make roughly the same power/torque figures of the IS300. Only way to find out if this £20 chip works is to ask the company for prof of before and after dyno results of IS200 making the claimed 25BHP and if they are happy to fit and dyno your car for results. but would be more hassle than its worth. there are only three ways to make power from a car: 1 Turbo or Supercharge (Evo,STi) 2. bigger cubic capacity (IS300, GS430) 3. higher revving using valve timing (AltezzaRS200, Celica VVTLi, Civic Type R's, Honda S2000's) Pick your choice...

hey imgo where did you get this info from?? can you post concept pics of how the NX looks/will look like and any info on power , mpg figures on both models ??

Wrong....this is a fuel test done couple of years ago which gave both Golf GTI and Subaru improved power and Torque figures across the rev range.. OK so they are both turbo charged cars so can take more advantage of cylinder volumetric effieciency due to compression ratio almost doubling with help of the turbo. but dont forget volumetric efficincey can also be improved with variable valve timing which in Lexus's case the valves could open earlier before exhaust valves close allowing a bit more air into the engine during the intake stroke couple that with a high compression ratio and ignition timing being able to advance its firing parameters and more power could be produced so its not only designed for Ferrari's . e.g. why do you think Honda/Toyota could acheive Turbo level figures in thier Celica VVTLi, Type R's and S2000's without a Turbo charger whilst similar cars in thier class result to Turbo to make the same power?? all down to valve timing and lift allowing more air into the engine during very high rpms to achieve 100% or more volumetric effieciency to produce Turbo power. so there is definately a gain to be had if ones engine has intelligent ECU's, sport cams, valves and higher cylinder compression ratio to make this happen. note its not the high octane fuel which makes the power its the ability of the fuel being able to hold off longer without self igniting during the compression stroke which makes the bigger bang(power) and higher octane fuels could hold off a bit longer without self igniting when the piston is compression air/fuel mixture. but if ones engine is not designed to make use of this then using a premium fuel is waste of money just like the Clio in this test. even if huge bhp figures are not gained, the car could be a bit more responsive. but these high octane fuels come alive when the engine is under heavy load during higher rpms so if one does not subject thier cars to that most of the time then again will be a waste to use these fuels unless one wants to make use of thier engine cleaning additives.

Might be you like enjoying that V8 sound track Tango :) . Have a read through 'My New ISF' thread in the ISF forum and guys on there have reported those figures on 'normal' driving. but i do agree wont be any fun!

yep do agree how far petrol engines have come! ISF guys are getting 26-30 mpg on a run sometimes in thier 5.0litre V8 monsters IS250 guys are getting between 30's to high 40's mpg when our IS200/300's auto can only manage 20 -25 mpg!! I think thier mpg advantage lies in the dual VVT-i, and direct ingection technology the newer Lexus engines have. we might aswell get an ISF and have best of both worlds :) (power and reasonable economy)

All 'Luxury' car manufactures are the same be it (Lexus, Merc, Audi, BMW, Jaguar) when it comes to admitting and fixing recalls or warranty issues but Lexus has been known to do a good if not better job when it comes to customer service and satisfacion than all the above combined. but I dont think they are doing a good job in your case as this Headgasket problems on thier diesel engines is a design flaw. but one cannot blame them as they stated in the conditions 'the car needs to have been serviced by them' to have any chance of them doing the work for free. log onto Merc, BMW and Audi forums and you will see endless threads of unsatisfied owners bashing the brands for not fixing problems under warranty or charging huge amounts to carry out minor works. this might be a hard pill to swallow but if you do like the car bite the bullet and pay the labour to have it fixed and keep it or have it fixed and put it up for sale. or the other option would be to trade it in the way it is at another Lexus dealership for a 2007 IS250 as petrol/ hybrids are Lexus's strengths not diesels hence its been discontinued and wont be sold anymore from new models up. If you want to a Diesel the Germans do it best but that does not mean they also dont have thier problems but for smooth silky petrol engines non beats a Lexus in my opinion

will you pay £400,000 for this http://www.autocar.c...smo-edition-way when you can have this for £36,000 http://www.autotrade...u63hp?logcode=p or a Lexus LFA for £220,000 leaving a change of £180,000 which can get a you guessed it a Nissan GTR, Lexus ISF and still leave change for holiday trips.

OK guys, so after 8 months since I started this thread, I have used 2 different brands and three different grades of fuel in my IS3. First: Esso(Mobil) Energy Supreme 97RON Found this fuel OK was between 139.9 - 144.9p per litre during my test. didnt burn as fast as Shell's V power and engine note in general wasnt that sporty was more quieter engine note . engine was slugish on colder morning starts and was kinda getting 2-3 mpg more from this fuel and didnt really notice any thing with regards to responsiveness but it is a good fuel all the same. Second: Shell V Power 99RON was between 142.9 - 147.9p per litre during the test. The engine prefered this fuel compared to Esso 97 and normall Shell Unleaded. My IS3 tends to be a bit dull to start in cold mornings even though I have changed spark Plugs and fitted new Toyota battery but using this fuel, the car cranks up instantly without any slight hesitations regardless of how cold the weather is, consumption is similar to Esso when driving normally but put your foot down, fire all those 6 cylinders and you will pay for it. this fuel burns really quickly on heavy engine acceleration and you can actually hear the engine car picks up well from a light foot an the accelerator pedal. time to see if this toned down Ferrari fuel does deliver power: OK so i had this fuel in when a dude in Civic Type R wanted a challenge now for a 2 litre 4 cylinder those Civics are very very quick mind they weigh around 300kg lesser than IS300's and have 200bhp. we started off from around 70mph activated my ECT PWR button flicked my drive mode to M and dropped my gears ratios from 5th to 3rd he was ahead about a cars length he floored his and i did the same by 90 i was near his bumper and passing with ease kept my foot down whilst changing up my gears and next thing i looked at my guage i was sitting at 147mph not sure if this burst of speed was down to the fuel or the mode i set the car to as i felt the car could go a bit further but backed out of it. Same thing with a petrol Audi 2.0TFSI similar performance (208bhp) to IS3 but again theat dude was out tourqed and out run by the IS300 on this fuel. so maybe Shell wasnt lying afterall but will still say its inconclusive as i wouldt know how the car would have performed in the same scenario if normall unleaded Shell or Esso 97 was used but it certainly gave it some top end grunt. Third: Shell normal Unleaded 95RON(note shell says its actually 96RON at the pumps) normally between 134.9 - 137.9 p per litre so its no more expensive than Supermarkets fuel and Iam currenlty running this fuel. car has gone back to being a bit sluggish to start in slightly colder mornings on this fuel compared to V Power which makes it simialr to Esso Supreme. now the weird thing is the engine has become more responsive than when I was on V power from lower to mid rev acceleration also sounds sporty when the revs are climbing which is similar to V power but different to Esso's quietness. doesnt burn as quickly as V power when the car is under heavy acceleration load and I seem to get roughly 5mpg more comapred to V power when doing roughly the same journey. but this result might be inconclusive as I have fitted an Apexi high flow perfomance panel filter, cleaned my MAF sensor and reset ECU the day before i started using this fuel so not sure if the responsive and mpg gain is down to that or the fuel. Conclusion: Each fuel was used continously for roughly 2 - 3months each time covering around 700 miles each month. All three fuels I found good and smooth running for the engine Esso Supreme did not give the engine that sporty buzz tho returned slight improvement in mpg but not a lot. Shell normal unleaded returned the best mpg improvement results on normall driving and seems to be the best responsive fuel from low to mid burst of acceleration(again not sure if its MAF cleaning, Panel filter and ECU reset). V power on the other hand was the most responsive fuel top end wise and engine loved it at colder early morning starts and although it was the worst fuel to burn quickly on hard acceleration, a lot of accelerator effort wasn't needed to get the car moving from a stop. Winner: The Winner for me would have to be Shell normal Unleaded for the fact that its roughly the same price as Supermarket fuels and cheaper than both Esso Supreme and Shell V power. the engine is responsive doesnt burn as quicky as V power on heavy acceleration and the car idles very quitely in traffic too. Some will say fuel is fuel but this test has shown me there are slight differences and variations in the brands and grades. but saying that will keep chucking in V power every now and again just for that top end grunt. :)