Most of the best mods for power and feel on the car involve lowering the spool time on the turbo so I get full boost at lower RPM.. like the Decatted down pipe for example.. BUT... does the ECU have a fuel map for the WOT that low down the rev range??

Thoughts??

MY96 UK BTW..

JGM



[Edited by Jolly Green Monster - 6/4/2003 9:58:04 PM]

 

More thoughts..

I assume the ECU has a look up table indexed by RPM, MAF for WOT?

Will it just stay on open loop modifying the fuel added whilst reading the AFR and MAF until a set RPM?

Cheers

JGM

 

On a UK car it is generally rich enough, can't comment on the 96 in detail. The worst that will usually happen is you lose a bit of torque from it being a bit lean.

On some imports it is a bit more dodgy - P1/STi 5/6 for example with a decat can hit quite a lean spot if you bring the turbo in earlier, and this can cause det.

 

not seen a problem myself

paul

 

No problems here either.

Check out my home page for recent dyno runs - which plot boost & lamda.

PS - there are also sample fuel maps there.

Chris

 

Thanks guys..

So doing headers (ported standard) and an up pipe and an induction kit should be fine too?

Knock link is going on before hand and I have an AFR already..

If a problem I might have to persuade someone to do me another map..

Cheers

Simon

 

I guess as long as you're on the stock turbo, then all should be fine. Bigger turbo's on stock maps make it a bit lean during spool - not dangerous as such, but hampers spool.

Richard

 

With ref. to std ECU map scaling and relevant extrapolation, I guess much earlier spool up can cause trouble...