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Old 05-04-2005, 01:41 AM   #1
Scooby Specialist
Member#: 14456
Join Date: Jan 2002
Chapter/Region: MWSOC
Location: WDM Iowa
09 BMW 335i Sedan
69/72/01 Corvettes

Default Tuning the ST on a STI for a 20g? Drive berfore Tuning?

If I installed a new turbo/injectors/fuel pump on my STI running Stage 2 map would the car be drivable enough to get from say work to home for a few days till I can get it tuned. Were talking 5 miles, 45mph tops, I know it probably will be a little or a lot rich but just need to get gingerly from A to B till I can get things sorted out. There is no base map for an upgraded turbo and injectors that I know of so I almost feel like I would be a little lost compared to when I had my UTEC on my Stage 4 WRX.

Ok so 2nd question once I start tuning where should I start, I would assume fuel to get the injectos scaled right, then get fuel set close, get the boost and then work on timing while fine tuning the rest? Not sure where AVCS would fall, would leave it alone till I understand it a little better.

I feel like a noob all over again.
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Old 05-04-2005, 04:14 PM   #2
Homicidal Maniac
Member#: 1612
Join Date: Jun 2000
Location: Austin, TX
2008 STI


The car may not idle properly with the injectors. All you have to do with that is adjust the injector scaler until your A/F correction and A/F learning are +-5% at idle and cruise. You may have to adjust the injector latency as well.

Mistuned turbo maps are easy to deal with: just don't get much into the boost.

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