Hi every one I have a 1995 wrx import with a full exhaust st decat air filter and been told by old owner that it has a uprated fuel pump ! But dnt know 4 sure what boost can I run ?

 

Think the general consenus is around the 1.2 bar mark mate, unless you have forged internals etc.

Rob

 

I'm running 0.5 at the mow is take thats standard boost ?

 

Sounds a bit low that bud, i think standard they're approx 1bar,

I'm sure the more technical chaps will be along shortly who will know the exact figures!!

 

Might have a small boost leak then ? I thought 0.5 bar is 8 psi ?

 

Does go well tho

 

Peak 1.4 here you need to sort out boost control via later map sensors or boost controllers to make it possible

 

You lost me sorry

 

Was going to get a boost controller 1st want to know what boost I can run also 0.5 is that standard boost 4 a wrx 95

 

Yeah possibly mate, might be worth checking turbo gaskets and piping etc,
0.5 bar yes would be 8psi thereabouts, if i remember rightly 14psi is 1 bar.

Has it been remapped at all? ideally it would want to be with your exhaust and induction, to account for the restrictions youve freed up with it, i think they can cause the cars to run lean.

 

Ya want to do it right just want to check if 0.8 bar is about right ? No not been maped yet !!! Lol might just wait untill i get a map done

 

Sorry just checked it's around 0.7 bar but at hight rev

 

0.6 bar is standard on uk cars well mine was lol now its running 1.5 bar

 

.5/.6 bar is like limp mode, definately not correct, uk cars run around .9 bar, would suspect you have an issue (boost leak, bad mods etc) you need to sort out, you should be running around 1 bar for sure.

Tony

 

Where shall I start 1st was told 0.5 was standard boost

 

No its not, your looking at around .9-1bar, fuel cut is around 1.2bar i think for your ecu, so you need to find out what the issue is, either ecu related (its gone into limp mode) or you have a boost leak (wouldnt surprise me, 18-19 year old car, perished rubber).
Finding it is the hard bit
Try getting any codes off the ecu, go check out scoobypedia for that (reading ecu codes).

Tony

 

MMMM !! maybe as when i turn the key to the Ignition light the fan comes on and off untiil i start the car . When the engine is running it only comes on when its hot as normal i checked online and 8psi is standered boost for a wrx ?

 

My old UK and import scoobs were running .9 bar as standard. The one I have now seems to be set at a rather low .6 bar But then I turn on my Greddy manual boost controller and its set to run at .9 bar atm (37%) but can tweek if need be

I would reccomend one of those Greddy things But you must be sensible with them

 

8psi isnt standard, .8 bar maybe but even that seems low, you should be looking at around .9 tbh, .9 bar is 13psi?

Tony

 

sorry 0.7 bar off boost well ish but thats at hight rev just poped i dnt drive the car hard not had it long you see !
the car does feel Quick tho !

 

OEM boost target = 0.79bar (11.6psig) on a 240PS MY93/94 WRX.

Prob 0.89bar (13psig) - can't quite remember - on a 260PS MY95/96 WRX.

 

 

Ok so what boost can a wrx import run then ? with out worrying its going to pop i have a full sytem and dec and filter

 

Usually upto 1.15 bar (as the map sensor can cope with 1.2bar before it cuts boost). Major Sarcasm might still be selling the chips (1.1bar) that will do this -- with your decat downpipe/system/filter plus a 255lph Walbro pump, then you will get prob get 260-280bhp. Must use 97+ RON though. But your OEM ECU is rated at 260PS (256bhp) anway! - so not such a big gain as starting off with a MY93/94 240PS WRX.


If you fit a MBC (bypassing the BCS and the ECU's safety features!), then you can prob go for 0.2bar over stock - so about 1.0-1.1bar. But if you do this, please ensure you get the AFRs checked out on a rolling road and that no det is occurring.

 

ok cheers pal ! who are Major Sarcasm ? i do have a decat downpipe and 255lph Walbro pump and a decent panel filter at the mow

so do you think im boosting ok then ? I took it out for a spin on my lunch its boosting jus above 0.5 around two lines above if that makes any sense but thats at high rev not low thats in bar not psi !

 

* Major Sarcasm is a poster on here who sells the chips. It just needs soldering into the dedicated spare socket in the ECU and the "J1" resisitor wire cut.


* If the "two lines" represent 0.1bar each, then that would be 0.7bar - a bit low I think.

As I said, I think a MY95/96 WRX (260PS) is around 0.89bar. But it depends on how accurate your gauge is too...

Do you have a mate with a known good gauge that you can temp. use, just to see if there is any difference between them...?

 

going to have a really good look when im home will clean the boost pips and check every think going to pole position sat there going to have a look for me

 

Mmm, this is not right. Your cooling fans should not be switching themselves on/off when IGN is switched on (engine not running)... Does your engine management light come on when you switch the IGN on & go out when you start the engine?

 

All sorted now mate cheers was boost pipe and was in test mode lol cheers tho

 

so what boost you getting now m8?