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The same sort of thing will happen with the SPG as it Posted by RS [Email] (#15) [Profile/Gallery] (more from RS) on Fri, 10 Dec 2004 16:29:20 In Reply to: Turbo by pass? Blow off?, bRAD, Fri, 10 Dec 2004 04:54:05 Members do not see ads below this line. - Help Keep This Site Online - Signup |
did with the Aero using a BOV for the same reason.
The car will run momentarily waaaaay rich because you're diverting air that you've already measured out of the induction system. Most of the information that the SPG uses for determining the amount of gas to feed the engine comes from Airflow. If less air goes into the cylinders than you measured, but you're feeding gas according to the amoung of air that you measured, you run rich. The ECU can't compensate for the rich running enough using the signal from the O2 sensor to trim the momentary blip in the F/A mixture.
That said, does it matter? Maybe yes, maybe no. You'll blast a black cloud out of the exhaust for a moment, carbonize the cylinder walls a bit, put some more crud in the O2 sensor and catalytic converter to foul them, etc.
posted by 66.167.5...
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