Re: Horsepower-boosting ECM - info? experience? - Saab 900 Bulletin Board - Saabnet.com
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Re: Horsepower-boosting ECM - info? experience?
Posted by Nick Guarracino (more from Nick Guarracino) on Wed, 15 May 2002 13:31:40
In Reply to: Horsepower-boosting ECM - info? experience?, Dave Keepper, Wed, 15 May 2002 12:29:48
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What type of car was your friend talking about? In classic 900's there are separate systems for boost and for fueling. If you want to raise the boost, you'll want to deal with the APC box. Saab used to sell a "red box" upgrade for the C900, which did raise the HP to 185. Maybe that is what your friend was referring to, but it's not exactly a "chip."
The ECU is in charge of fueling, and AFAIK, there are no chip makers in the US. That's why you'll hear of people going with rising rate fuel pressure regulators (rrfpr), larger injectors, etc. when they are running higher boost levels. The stock ECU simply can't keep up after a certain point.
Try checking out past posts on the perf board, or sites like spg9.com and saabperformanceparts.com
--Nick
'91 900TC (w/ mods)
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