GM TBI Fuel Pressure Regulator Modification

[@danielwheeler2405]

nice to see a few still running old school tbi. not a lot of info out there on these. I also have one and looking into some mild tuning options

[@jcauto525]

Dynamic efi has some good info. I haven't done any business with them yet, but I've read about their flash ebl and want to try it soon. And gm tbi is dead nuts reliable from my 10 years of ownership, definitely misunderstood/slept on for mild combos

[@_Epictetus_]

Where did you get your spring?

[@RussellCompton-fh3gr]

waiting to see how you tune it

[@jcauto525]

I'm looking forward to it also. I've done an LS swap recently and tuned it. It should be the same process once I get the updated dynamic efi ecu

[@RussellCompton-fh3gr]

hoping your pump isnt that weak

[@jcauto525]

Factory specs for gm tbi is 9-13 psi. It is now around 18 for more fuel since the crate motor has a cam👍🏻

[@Brian-gx7yx]

All I care about is what will increase my miles per gallon

[@jcauto525]

@Brian-gx7yx hardly anything lol maybe a tune and factory sized tires, dig around and find out what rear gear ratio is best for economy with these trucks and how you drive brother