Dawes on STI V3. GOOD, BAD or UGLY?
21 January 2003, 03:05 PM
#5
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Jonny Gav,
Why is it a big no no?
If you have, at very least, a boost gauge you could fit one of these devices and retain the same peak boost levels, benefitting in the meantime from the enhanced spool up offered by the dawes. As I understand it, the standard ecu should be capable of providing the necessary changes to the fuelling requirements now that the turbo can spool up quicker... assuming, that is, you keep the peak and held boost levels at factory levels.
Moray
Why is it a big no no?
If you have, at very least, a boost gauge you could fit one of these devices and retain the same peak boost levels, benefitting in the meantime from the enhanced spool up offered by the dawes. As I understand it, the standard ecu should be capable of providing the necessary changes to the fuelling requirements now that the turbo can spool up quicker... assuming, that is, you keep the peak and held boost levels at factory levels.
Moray
21 January 2003, 03:09 PM
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Moray, my worry is that the boost will hold a lot longer than standard, and at high RPM with no active knock correction the Subaru maps, certainly the Phase II ones go REALLY advanced.
With a knocklink, fine. If you get det work on other ways to reduce the det (breathing, fuel pump, FPR, water, octane, intercooling etc) or map it out. If none of these options are available control the boost so it doesn't go high enough to det.
Very oddly some Subaru maps get more advanced at the bottom right hand corner just where you don't want it. Not seen an STi 3 map though. If detonation is checked for then fine, no issues.
[Edited by john banks - 1/21/2003 3:10:56 PM]
With a knocklink, fine. If you get det work on other ways to reduce the det (breathing, fuel pump, FPR, water, octane, intercooling etc) or map it out. If none of these options are available control the boost so it doesn't go high enough to det.
Very oddly some Subaru maps get more advanced at the bottom right hand corner just where you don't want it. Not seen an STi 3 map though. If detonation is checked for then fine, no issues.
[Edited by john banks - 1/21/2003 3:10:56 PM]
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24 January 2003, 08:55 AM
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Have STi 3 wagon (PE Phase 1). Now running at low boost. Thinking about Dawes too. Dont know which parameters at the PE was done (fuel, ignition, boost?), but i think the 1,2-1,3 bar is a target for me. Question is: dawes, or Apexi, or other ECU (Link, GEMS, or MOTEC) Depends on money :-(
No I have 308 bhp and the question is which improve I can expect from higher boost or different ECU.
No I have 308 bhp and the question is which improve I can expect from higher boost or different ECU.
