Hedgywrx

hi, as above what pressure does a standard scooby classic turbo run? mine is .4 bar and was wondering is this correct or is it on a low boost? as i had a gsi mk4 astra and that was on 1.4 bar standard :-s

joz8968

iTrader: (13)

0.4bar is way too low.

But we need to know your exact model to tell you the OEM boost target.

Generalising, the JDM Classics were anywhere between 0.79 and 1.03 bar IIRC (dependent on model/MY).


Think early UK Turbo 2000s were 0.69bar.

WRX Blues

Sounds like you could be in 'limp home mode'

joz8968

iTrader: (13)

^^^ Indeed.

Hedgywrx

Yeh i ds think it was low :-s how would i get this sorted, do i get it mapped? The car drives mint and has no issues with engine at all just the boost gauge reads 0.4 bar under full boost :-s

Hedgywrx

Sorry yeh mines a 1999 impreza turbo wrx

Hedgywrx

Thing is car is still fast :-s could it just be a dodgy boost gauge? I have a dual turbo timer and that has a boost reading on il watch that later and c what the reading is

joz8968

iTrader: (13)

Do you have a mate who's gauge is reading correctly on his car?

If so you could temp. swap your gauges around to rule in/out if your gauge is faulty...


MY97-00 JDM saloons (whether WRX or WRX STi) are all 280PS - and I think the boost target is 1.03bar. If not that, then it will be at least 0.9bar...

Hedgywrx

Ok mate il give that a try first but if it reads the same should i consider geting it remapped? Or would a boost leak effect it etc? As far as im aware theres no leaks and boost holds fine etc

joz8968

iTrader: (13)

Subjectively, does the car feel any slower (esp. in the mid-range to top end), since you noticed the gauge reading 0.4bar? You would have thought so, as it's 'lost' over half its boost target i.e. the w/g would be opening far too early at maximum load = significantly robbed power.


A remap (and the associated expense) is not required... Unless you have fitted some mods that would dictate you do so! As any boost leak would be 'wasting' the session.


I would simply take it to a well known Subaru tuner/specialist (not a main dealer) - pref one who has access to a rolling road.. They should hopefully get to the bottom of it.

Could be a number of things: loose/split boost hoses... shagged turbo or w/g actuator... blocked intercooler... blocked exhaust system (typically a blocked d/p due to a disintegrating cat)... etc.


But first try resetting the ECU to see if it (even temporarily) clears any limp home mode.

Then try checking all boost hoses/joints, etc.

Hedgywrx

Yeh its got fmic, and full ss system with dv and mishroom filter, so i was wanting to get her mapped anyway, ive only had the car 2weeks and its always been the same mate, i personally think its the gauge as just checked the turbo timer and that says 0.89 peak.. But il drive it home from work and see if it actually hits that on the turbo timer as that could of been done a while ago, ok i dont know of any around here as im new to all this scene :-s

Rutt_Dj

can i also ask this, mines a 2003 wrx ppp, thanks

mickywrx

iTrader: (29)

Provided West Haddon is where you're from, then go and see Paul Blamire at Zen only 24 miles away;

http://www.zenperformance.co.uk/p/Home.html

You're going to need it mapped regardless and Paul is one of the few people I would trust to map mine, IF, I was ever to get it remapped.

Hedgywrx

Thanks mate gave them a call a few hours ago :-) got it booked in and il post up what it was, he thinks w/g, bought a load of new bits for her, td05 16g turbo walbro pump and tere guna fit and map it in for me and also do a major service so she ahould be sweet when she is out of there :-) thanks for advice etc :-)