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Old 2008-07-14, 10:31 AM   #386
sperry
The Doink
 
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Real Name: Scott
Join Date: Nov 2002
Location: Portland, OR
Posts: 20,335
 
Car: '09 OBXT, '02 WRX, '96 Miata
Class: PDX/TT-6
 
The way out is through
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Quote:
Originally Posted by knucklesplitter View Post
The ECU will be fine with the MBC - it will have no clue about it. Keep in mind that even though the MBC is tuned all the way down your turbo will still be able to boost to whatever your wastegate spring is calibrated to (prolly 14-18psi on that FP Green). You can also just jumper the boost hose directly to the wastegate for minimum boost, but the spring still is the factor.
Yeah, I know. My point was that running the stock ECU w/ the MBC in open loop leads to that whole pesky partial-throttle/full-boost kerblamo situation, specifically because even with the MBC set to minimal boost, wastegate boost is around 16psi which is still too much boost for the stock WRC fuel maps.
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