Chris-WRX

Curious to the fact that I own one, what is the maximum boost the sti can run at before meltdown?

steve McCulloch

Why do you need to know?

Boost is not what gives you the massive power/torquew hike but the ignition advance does - but this requires water injection/bigger intercooler/Octane Booster, etc.

On a basic chip you should not be going over 1.4/1.5 bar. I run at about this on a slightly modded sti5

Chris-WRX

Just curious steve, I've spoken to you in the past concerning the mongoose exhaust. No my car currently is running 1.4bar

davy b

before i took delivery of my p1 i had a v5 sti running 1.2 bar all the time and 1.3 scramble boost for 10 seconds. i had the car running like this for a year with no problems

CraigH

1.4-1.5 bar on a basic chip? I assume you don't mean standard? reckon that'd lead to a few problems otherwise.........

steve McCulloch

Craig Hardman?

Nahhhhh on a Link/Motec/Unichip - not the standard JECS

I run at 1.4-1.5 bar - depending on how cold - if its colder I get a bit more boost -used to be able to get a bit of overboost with a restictor - but the modified VF22 from Turbo dynamics does not need this - spools up to maximum at about 4000 revs - which is much more laggy than the VF28 and VF22 but it certainly kicks!

Just need a decent exhaust now - will prob go for the Scoobmania one - as the BPM is on its lasts legs - but it is 10 months old!

Rikki23

would those figures be applicable to 95 WRX? Mine is only peaking at 0.7 BAR. Was 0.9 till I had my overboost problem cured

NIGE K

Hi davy
Have you or do you intend to make any changes to the P1?
Cheers

NigeK