thomas

I have a turbo l28 and I have the (open element gm) temp sensor mounted in the third runner and it seems to work for me. ive tried switching it around but it seems like i can get the a/f a little more dialed in under boost with the sensor in the manifold. I might be wrong but when the throttle is closed (idle part throttle decel) there is a reserve of air in the manifold that heats up before its ever drawn into the engine, when there is a greater amount of cool air entering into the manifold (wot) the air is moving so much it dosent have a chance to match manifold temps, though it will heat up a little. It also seem when my intake manifold is cool the fuel demand increases but as it gets warmer and ambiant temp stays constant the fuel demand drops. I have a crappy intercooler out of a sabb9000 and i never see intake temp above 180, and that only happens when im at idle and decel. It also might come down to tuning preference, I dont know.