Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.
It’s a 1995 so an adjustable fpr is not possible as the injectors are already at their limit on the high pressure system.
Also I made sure to leave the butterfly diameter the same. I shaved a little height off the back to increase flow at partial throttle. Idle is fine
They are definitely not at their limit. I have run them easily at 45-50 psi. The internal regulator needs to be deleted and eliminated to prevent it from splitting and leaking to do that though. GM had a high pressure version of both the 46# and 61# injectors that have better coils in them that reliably open well past 50 psi.
I just bought 454 TBI or Marine TBI units myself.
For the 600$ that I would spend on new high pressure 61# injectors, I can get a chip burner, some long tubes, and a cam. I would probably switch to port injection before I spend that much on a TBI unit. I’m just trying to hot rod the stock motor. The internal regulator delete does look interesting
I wonder if I could tune the IAC to open at full throttle for more air flow. Currently it is unplugged and shut because I couldn’t get the truck to idle under 1k. I need a new one. Just gotta tune the idle with a screwdriver every month or so. I really don’t care if it runs lean or rich at idle.
