Excellent (although at what point is it time to stop spending the money
) ... getting my uprated clutch, Q2 and Eibach ARBs fitted later this year ... I hear what tatt's is saying about the airflow, my car reachs 200bhp by 4000 rpm, and then doesn't really get any higher ... looking at the rolling road graphs it does seem like the power hits a brick wall ...
... I'll be hot on your heals next year with the FMIC
(if I can justify it to myself
Chris, I got 215bhp with the standard turbo, the standard turbo was rubbish at providing boost high revs, and eventually blew up like a balloon (due to the boost/pressure levels) and exploded.
These VNT small frame turbos are not designed for 2 bar boost.
Personally, I wouldn't waste your money on an uprated clutch, its going to cost at least 250quid fitted (probably loads more) and you could buy a bigger turbo for that instead (unless you need a clutch anyway), a bigger turbo will not spike the boost low down like the standard one will and mine produces only 300 lb/ft at the wheels due to the turbo being larger.
I know you don't agree with limiting the torque low down to save the clutch or drivetrain, yet oddly enough the larger turbo with just 300lb/ft at the wheels (no torque limiters needed due to spooling/bigger tuubo) is no problem what so ever for either the clutch or drivetrain, and the benifit is it keeps on pumping the torque high up in the rev band to, so it produces the power.
We had issues limiting the boost with this turbo, it was boosting at 40psi at max revs, but produced less power at this boost than when we got it down to 30psi, so boost is not everything, turbo backpressure plays a part in this too and a good balance between i.m.p boost e.m.p is key to getting power..
The FMIC is a great mod, dont expect great gains on a rolling road run, but if you track day (or similar long & high boost levels causing high temps) then you will sustain the gains at speed/duration. It won't get you on the heels of better cars, but is a mod worth doing if you drive hard for long durations - problem is - in a state of high tune -you can't do this for more than 10 seconds at a time on UK roads - a track day is needed.
But if your doing that, then an oil cooler is a must also, these are not so easy to fit on the 2.4 10v, you need an extra sandwich plate and a smaller oil filter or remote filter, either way, a bigger or second plate is needed from the heat exchanger to get round the engine mount.
Bigger brakes - you up for a group buy on 330's to fit under your 17's?
As for spending money, put it this way, if your turbo blows, you can spend 700quid for an alfa recon turbo - which is standard, or you can buy a Gt2559 or similar, an RS500 style intercooler, pipework and fit and still get change from 500notes, tuning is only expensive if you want it to be...