Thread: TBI Mods.
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Old 01-12-2006, 01:28 PM   #291
Chevy Dude
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Join Date: Oct 2005
Member ID: 35606
Location: Cali
Age: 50
Posts: 43
Re: TBI Mods.
On TBI units the Fuel Pressure Regulator (FPR) is internal on the TBI and the pressure is fixed at the factory somewhere between 9-12psi. There are kits on the market to convert your FPR to an adjustable one.

I purchased the one from CFM-Tech and was able to get the pressure all the way up to 14-1/2psi before I adjusted down to 13-1/4psi where it runs good at now.
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