You are up against two problems, firstly the mapping resolution is far too low which means that the mapping will be too rough, and secondly 2D mapping on a turbocharged or supercharged car is impossible to get right, and any attempts you make at doing so (assuming you are paying someone to do the work) is a waste of good money that should be aimed at getting a proper ecu system.
Incidentally, if you are only going to use low boost pressure, you shouldn't be using a T4 turbo as it will be too far away from it's peak compressor efficiency.
I strongly recommend that you do some research to ensure you get the right parts, otherwise you can waste a lot of money.
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But im still waiting for you to tell me why Greddy put the Emanage with there Turbo kits if the Emanage are not up to the JOb in hand
e-Manage is an inexpensive programmable fuel management system that allows you to properly tune your factory fuel system without having to change the entire factory ECU system to an expensive "stand-alone" unit. The e-Manage system is a universal "piggy-back" type unit which taps into most Japanese factory ECU wiring, by utilizing the existing sensors. Basic functions will allow the user to slightly alter factory injector duty-cycle (± 20% at 5 preset RPM points) by intercepting and altering airflow or MAP sensor signals. For Honda VTEC cars you can adjust the VTEC shift point. Additional features are built into the system but are only accessible through the use of the e0-1 programmer or our PC-Windows based "e-Manage Support Tool" communication software (Please see our Authorized GReddy Support Dealers for more information). There is a 16x16 airflow adjustment map, larger main injector correction adjustment, upgrade air flow meter adjustment, boost limiter cut, anti-engine stall, VTEC-fuel adjustment, real-time map trace, real-time display, real-time communication and basic Data-logging. With the use of our "Optional Injector Harness" and the software, the unit has the ability to control an additional 16x16 injector duty cycle map and the controls for adding up to 2 additional sub-injectors. If the "Optional Ignition Harness" and the software are used the unit has the ability to control a 16x16 ignition timing map. All of the above maps can also be map-traced in real-time as well. If the factory range of map or airflow meter is surpassed, you can incorporate our "Optional GReddy Pressure Sensor and Pressure Harness" to set larger scales of adjustment.
and this is just some of the things it can do, so do you still think its not up to the Job in hand
Thanks for your help guys.
P.S yes i know the T4 is a bit big for just wanting 270 to 280hp and i know im going to get Turbo lag, untill i up the boost! but this is all i want out of it when i 1st fit the Turbo at the start of 2005 but by the end of 2005 i will have a new Greddy bottom end in the IS, :winky: so untill then! yes i will have Turbo lag, as the Turbo is a bit big for runing low boost.