Pro-M MAF
Thread Starter
Registered User
Joined: Mar 2002
Posts: 3,082
From: San Juan PR
I just hope frequencies can be lowered and are lower than normal so you can have a better resolution of fuel and "tune" around it.. tricks... but if it works as it should.. IM happy about it.
West South Central Moderator / Special Guest
Joined: Dec 1998
Posts: 1,650
From: Coppell, TX USA
do NOT trust pro-m! There stuff is good, but they dont have any idea what is going on as far as ls1/lt1 stuff goes. They speced mine out for me, and it was WRONG. I am going to send it back with DETAILED instruction on how I WANT it done, hopefully they dont try to use their brains too much :-/
West South Central Moderator / Special Guest
Joined: Dec 1998
Posts: 1,650
From: Coppell, TX USA
They tried to use their brains, instead of just listening to me.
I told them what I wanted, a 0-900g/sec maf with a 0-5v output.
they started asking me what injector sizes and ****, i tried to tell them it was irrelvalent.
I told them what I wanted, a 0-900g/sec maf with a 0-5v output.
they started asking me what injector sizes and ****, i tried to tell them it was irrelvalent.
Thread Starter
Registered User
Joined: Mar 2002
Posts: 3,082
From: San Juan PR
Exactly... So it can be scaled up to what you want...
I thought the PCM saw Hz not volts? Let me know.. but its a good idea if the maf has that resolution...
WOuldn't it be beter to have a 0-1024g/s in a 0-5v resolution? that way you easily scale the inj constant in half and have full control over fueling.
I thought the PCM saw Hz not volts? Let me know.. but its a good idea if the maf has that resolution...
WOuldn't it be beter to have a 0-1024g/s in a 0-5v resolution? that way you easily scale the inj constant in half and have full control over fueling.
West South Central Moderator / Special Guest
Joined: Dec 1998
Posts: 1,650
From: Coppell, TX USA
it doesnt matter- because the MAF table will be 100% changes anyway(the response is different).
the PCM needs a freq input, but thats what a voltage to freq box is for :-D
the PCM needs a freq input, but thats what a voltage to freq box is for :-D
Registered User
Joined: Apr 1999
Posts: 1,178
From: Cleveland, WI
The computer can only read up to a certain frequency output that the MAF puts out, which can be programmed up to 510 gps. Undoubtedly the MAF will continue to output a higher frequency the higher the airflow goes above this limit. How much higher is what I was inquiring. A frequency divider would take care of the Maxing signal to the PCM, requiring PCM table modification of course. Thats what I'm working on right now. Was just curious if maybe someone placed one of our MAF's on some sort of flowbench and plotted a freq output vs. CFM. Thats kinda my next step, to see if a flowbench or something can flow enough air to test a MAF.