Quote:
Originally Posted by solowma
Yes you are right. The big debate. To have the MAF on the intake of the charger or before the throttle body. We located the MAF between the airfilter and the charger. We keep going back and forth whether to locate after the charger or before. This also brings up the question of to resurculate the charged air back into the charger or to atmosphere.
You are also right on having it between the intercooler and the throttle body experience. I have a truck (see my sig) and had the maf on a push through design. Great driving, throttle response etc. After switching to multiport injection we decided to locate MAF on the intake side. After that intake backfires, bad drivability and throttle response. I just thought it had to be programmed out.
I will run this idea with my buddy and maybe relocate MAF.
Next would be, now bare with me. I will try to explain it clearly in routing of piping and charger. Air filter----> into intake of charger---> through intercooler----> through MAF----(Split) to throttle body and bypass valve. On the turbo setup I suppose you vented to atmosphere. On the charger do we vent or resurculate back to outlet of charger? I have seen both designs work on different vehicles but this is a denali with obd2 PCM!!!
Oh btw, I have been watching the MAF and it is not out flowing yet. Around 9 to 10 thousand HZ
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If you are using a MAF sensor, the boost bypass valve should be located between the SC/Turbo and MAF sensor; then the MAF sensor should be mounted as close as possible to the TB. Here's the way I would hook it up...
Air Filter -> Charger -> To induction split that has 2 outlets; one leading to the boost bypass valve and the other to the Intercooler -> MAF sensor -> TB.
Of course you could also put the induction split point and boost bypass valve on the after side of the intercooler. I don't think it really matters that much. The main point is: when you let off the gas, air escaping out the bypass valve can't be allowed to be registered by the MAF sensor. If you have the bypass valve mounted between the MAF sensor and TB, then when the bypass valve opens, allowing air to flow out of it; this air flow will be registered by the MAF sensor -- which will cause problems.