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Tippy Tippy is offline
Chain fence eating turbo
Join Date: Dec 2008
Location: Austin, TX
Posts: 8,844
Originally Posted by jpnovak View Post
Sal, Thank you for a Most Excellent post. As usual it was very informative.

I think this has thread has transitioned into a comparison of types of EFI as compared with the original question of EFI versus CIS.

The MAF can be found here.


Cory, ITBs should not be a problem for MAF. As long as you have an intake plenum in front of the ITBs where the MAF can get a calibrated signal. IN the case of a turbo you just need one of the connection pipes to be the correct diameter. Each MAF is calibrated to a specific tubing size such that its mass/volume/velocity curves are consistent with the calibration conditions.

I have not had a chance to try a MAF but it is very intriguing.
You know Jamie, I think this is the next step. A MAF is just so accurate vs MAP.

Just not sure if it has too much latency using a turbo? I mean, there's a lot of feet of piping before the "metered" air actually reaches the combustion chamber on a turbo'd car. N/A like Sal would be ideal.

Don't know if I'm wrong or right, just thinking out loud again.
Cory - turbo'd '87 C3.2 Guards/Blk, 3.4, 7.5:1 CR P & C's, soon to be 993SS cams and GSXR 750 ITB's fed by 964 intake, Borg-Warner S366 turbo @ 1.4 bar, Treadstone full bay IC, TiAL F46 WG, HKS 1 1/2" BOV, twin 044 pumps, MegaSquirt 2 (v3.57 board) w/EDIS, Tramont wheels (285's rr, 225's frt), Big Reds frt, 993 rr., tower brace, MOMO wheel
Old 11-19-2014, 06:33 PM
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