Boost pressure on MY97 using Dawes??
15 May 2002, 08:36 PM
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I have recently fitted a Dawes SDBC to MY97 UK car. I am interested in finding out what boost pressures others are running, as I am currently on around 1.2bar. Is this a safe level(although I'm not sure if my boost gauge is very accurate)?
I haven't yet hit cut-out, so I assume this pressure is not too high, although I remember somebody saying that the 'best' method of set up is to find the cut-out and reduce boost pressure by around 1psi?
Any help much appreciated as I seem to be having way too much fun for 35quid!!
I haven't yet hit cut-out, so I assume this pressure is not too high, although I remember somebody saying that the 'best' method of set up is to find the cut-out and reduce boost pressure by around 1psi?
Any help much appreciated as I seem to be having way too much fun for 35quid!!
15 May 2002, 10:16 PM
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Yes find the point where it just stops fuel cutting and turn it back 1 PSI or 0.07 bar. Your gauge is very possibly over-reading - a lot of MY97s would fuel cut at 1.2 bar.
Edited thanks Ricco for correcting my decimal points.
[Edited by john banks - 5/17/2002 8:31:39 PM]
Edited thanks Ricco for correcting my decimal points.
[Edited by john banks - 5/17/2002 8:31:39 PM]
17 May 2002, 06:46 AM
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I'd be careful - as John says, I'd also expect you to have hit fuel cut at 1.2bar. Do you know the history of your car? Maybe your boost guage is accurate, and it has *no* fuel cut 
Richard
Richard
17 May 2002, 07:44 PM
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AFAIK the car was totally standard when purchased from the one owner previous. I checked with the servicing Subaru dealer prior to buying who assured me all was well.
I think i'll have a trip to Kershaws rolling road in near York to see if all is well before tweeking further.
Cheers
Lee
I think i'll have a trip to Kershaws rolling road in near York to see if all is well before tweeking further.
Cheers
Lee
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17 May 2002, 10:28 PM
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Leeroy,
I have a MY97 UK - When I first fitted my Dawes on setting it up it boosted to 22psi for about 4 seconds before it fuel-cut. Since setup i've only run 14-15psi max, so I can't say what sustained boost is typical before fuel-cut. I may up it slightly soon to about 1.1 bar.
Also slightly off topic but is the TD04 fitted to MY97s slightly larger than those fitted to later models (MY99/00)?
IIRC it's documented somewhere as follows
Upto MY96 Large turbo
MY97-MY98 Medium turbo
MY99-MY00 Small turbo.
Anybody got a definitive answer?
Cube.
I have a MY97 UK - When I first fitted my Dawes on setting it up it boosted to 22psi for about 4 seconds before it fuel-cut. Since setup i've only run 14-15psi max, so I can't say what sustained boost is typical before fuel-cut. I may up it slightly soon to about 1.1 bar.
Also slightly off topic but is the TD04 fitted to MY97s slightly larger than those fitted to later models (MY99/00)?
IIRC it's documented somewhere as follows
Upto MY96 Large turbo
MY97-MY98 Medium turbo
MY99-MY00 Small turbo.
Anybody got a definitive answer?
Cube.
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