Get the 42lbs turn the fuel pressure up to 50lbs.... what fuel pump do you have? You will need a gss255 high pressure pump.Don't want to insult good info. The ford lightening had 42lb stock injectors....and ran 8 psi with stock blower....motor was also 5.4ci. some run 9-10 stock with intake and exhaust. I Ford has rocket science engineers to tune. I've got to try them for myself. ( I'm broke ) They may max out and I'll have to change them....or they may work for me. I'll data log when the time comes and I'll post every fail.
I really do appreciate all the info I've gotten from you guys. The problem is I started getting garnished and my funds are low. If I don't try this dumb ish then you guys wont see this car drive, under its own power, for about a year.
This way at least over a year you might see me build a dart block monster. I'm rolling the dice. I have an extra plenum gasket and can sell the injectors for a profit....nothing to loose.
You should be fine then. If you set your fuel pressure to 50psi the injectors will act like 52lbers. They should work like this just fine.I've got a 340lph fuel pump. I'll be using a slot style MAF calibration shouldn't be too hard...I hope. @a91what
If you are going down that path buy the diypnp unit. But to be honest it's not for the faint of heart, seriously weigh the options you have to tune the thing yourself. Not trying to stop you or talk you out of it at all I love mine. Just playing devils advocate.Found mega squirt 2 for 310 shipped. Has to be built....I've seen the thread on here but need to know how much more stuff I'd need to buy to get it operational. It's from DIYautotune. @Boosted92LX @a91what
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