Adjustable fuel pressure regulator?
Postmaster
Joined: Jan 2009
Posts: 4,558
Likes: 2
X 2 , you need a wide band on it so you can see what your FP ratio is , it will never run right with the stock air meter and bigger injectors , you can have the meter calibrated , but a custom tune is best .....
Junior User
Joined: Nov 2010
Posts: 50
Likes: 0
if he changes his maf to one thats calibrated for the 21's he should'nt have to do anything to the computer.atleast thats with the mustang motors.
Hotshot
Joined: Jun 2007
Posts: 10,008
Likes: 7
From: Austin, TX
The MAF doesn't need to be calibrated to the injectors, just the PCM does. So a chip will take care of the bigger injectors. Calibrating the MAF isn't technically correct... The best way to do it is through the computer...
Junior User
Joined: Nov 2010
Posts: 50
Likes: 0
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Postmaster
Joined: Jan 2009
Posts: 4,558
Likes: 2
....It can be done that way , i have a 302 with 30# injectors , i have a pro m 80mm mass air meter that was tuned for the truck and the injectors , it ran fine with the stock computer , but after a dyno burned chip it is much better....Lew
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ybshore
1987 - 1996 F150 & Larger F-Series Trucks
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Mar 22, 2017 02:27 PM
