Custom Application Distance From MAF to TB
03-18-2012, 08:43 PM
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Custom Application Distance From MAF to TB Hey all, I have an LM7 with a nasty little cam and ported heads going into a jet boat. The motor's almost ready to go in and I can't believe I missed this. I discovered today that I have NO MAF sensor to speak of!! So, I'm going to have to get this worked out. I see lots of threads where people are asking how far to go, and the most common answer is "in the stock location". This is a custom job so I have no stock location, but I have plenty of room for placement.
So how far upstream from the TB should the MAF be?
Thanks in advance.
So how far upstream from the TB should the MAF be?
Thanks in advance.
03-18-2012, 10:11 PM
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A little more info. I'm NOT running O2 sensors on the marine exhaust. I could run speed density, right? Jet boats rarely run part throttle anyway. Pretty much idle and WOT.
03-19-2012, 01:29 PM
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Stock to TB on a F-body is approx 4-5 inches. Last Time I checked I would think the IAT sensor would have more to do with distance to T/B due to the temp it reads.
*** I just read the 2nd post. If you not running O2's at all, it should be Speed Density which dis regards the MAF. A non factor.
Check the PCM tuning section. I am no expert but from what I seen, I would be having a tuner work over the PCM based on the application and they are the best to advise.
*** I just read the 2nd post. If you not running O2's at all, it should be Speed Density which dis regards the MAF. A non factor.
Check the PCM tuning section. I am no expert but from what I seen, I would be having a tuner work over the PCM based on the application and they are the best to advise.
