Is300 Decatted Manifold & Race Pipe

[Mr Morse]

Here are some pictures of the decatted manifold that Prolex have been R&Ding for the IS300:

The Prolex manifold pipes (unlike the OEM) are all equal length from the exhaust flanges to the 2-into-1 join at the race pipe to give the most efficient exhaust flow and therefore to optimise power. The race pipe (can't see it here) runs through to join with the rear cat-back section.

So......the whole exhaust system is now completely unrestricted (decatted)!

There is still some work to be completed:

1) The manifold and race pipe need to be heat wrapped due to the close proximity of some hoses. Shame - the pipes have turned a beautiful golden colour!

2) Extended Lambda sims need to be fitted to stop the CEL

3) Minor modification to the K&N induction pipe to bring it lower down towards the headlight to draw colder air.

4) Car will be dyno'd firstly with the OEM manifold and downpipe, then with the OEM manifold and XERD race pipe and thirdly with the full Prolex system. We are hoping for around 25 BHP gains.

(The red cables are earthing, which I'll move to a less conspicious route)

[Adie]

Looks great Mike :D When you expecting to pick her up?

[Gord]

Looking very nice Mike :D will we see it on sunday

[Mr Morse]

I'm assured that both cars will be ready by next weekend! :D

[Bazza]

looking good

if it goes as well as it looks, youre gonna be smiling for weeks :D

[Rob]

looks like a high quality manifold there!

[MrADeveci]

looks like a high quality manifold there!

←

No it don't ! it looks poo .......

I'm just jealous ;)

[marcus]

Looking very good mike :winky:

[Fargo]

looking good there

[DAZA_W]

very smart mate

so you have no cats at all you going to have to put them back on for mot purposes

[MartinC]

Nice bit of fabrication that mate :) shame you have to hide them with heat wrap, that golden colour gives them a titanium look :D

would the production one still have welds around the pipes, or is that part of the development phase? Tidy welds so not a massive issue

[Mr Morse]

very smart mate

so you have no cats at all you going to have to put them back on for mot purposes

←

"Ways and means" or something like that!

[waddy]

Oops - when carrying out your MOT Mr Morse I accidently stuck the emissions reader sensor up the pipe of this Ford mondeo next to yours - no worry though i'm sure the readings would have been the same and I'm late for lunch so just keep this read-out :winky:

[MacRS200]

Lookin good Mike :D

You still got the main CAT though have you not cos it's not just the MOT now. LOOKEE HERE

[Mr Morse]

So long as everything is nice and hot when the pipe goes up the bottom :winky: will be OK

[Adie]

I'm assured that both cars will be ready by next weekend!  :D

←

If you're picking it up at the same time, it could be a mini meet as Marcus is going to pop along for a look also. :D

[Mr Morse]

And why not....... :D