Just removed bleed valve and put restrictor pill back in the vacuum hose from turbo to t-piece, now I'm running 10psi and i could of swore it used to be 13-14 psi before I used the bleed valve. My car is Uk classic x plate turbo 2000.

Thanks

 

Pretty sure a UK car runs 0.8 as standard, the sti's run 1.1 bar which is just over 14psi.

 

Here we go I found this

http://www.southeastscoobies.co.uk/v...hread.php?t=78

So any ideas why I'm not achieving standard boost target??

 

mine runs 14 psi always has done! have you checked the pill is the correct one?

 

Yeah it's 1.2mm im sure that's the right one, don't make any sense to me!

 

I think it's bang on isn't it?

The UK MY99/00 cars, because they run only 215bhp as std, will have a lower boost target than even the early JDM 237bhp WRX's 0.79bar! I'm petty sure the UK car IS 10psi/0.69bar??

The bleed valve was prob put on by a previous owner for the very reason to up the power - hence it being set to run 13-14psi (<=0.95bar). So now that it's been removed, hence the restored OEM boost target of 10psi/0.69bar (as dictated by the ECU's map/restrictor pill combo).

All is normal IMHO.

 

No seriously I'm sure it was 13-14 psi, at 10 it doesn't feel anywhere near
215bhp! Put bleed valve back on and set it to 15psi and feels right, I found on a forum earlier that it should be 13.6 psi on mine!

 

Really? Yeah I think I'm being a bit conservative with my figures, then.

Hope you sort it to your delectation...

 

14 psi/ 1bar is bang on mate if your seeing lower start looking. check boost leaks if your a dead cert for the pill being right. i have a standard my99 making 14 psi on my guage

 

Hey bigf, I think thye MY99/00's 2-port requires a pill with a smaller hole. This would make sense as the 1.2mm will cause the 2-port BCS to under boost, as it allows too much air through too quickly to crack the wastegate open. If you fit the a smaller holed one, the air will be restricted more, thus hopefully getting you to the 14psi target (i.e. w/g remains shut for longer).

Try experimenting with progressively smaller holes i.e. 1.1, 1.0, 0.9 (can't remember what it is) ...


(NOTE: I think the 1.2mm one was fitted to the MY93-96 3-port BCS, where that BCS works in a 'bled air' fashion i.e. the bigger the pill's hole, the more air bleeds away from the w/g, thus higher boost.)


But, alternatively, I could be talking horse****.... Again!