two and half year project so far.

hotrodbrett · 06-23-2008

I have been hiting 10 psi of boost with 65 psi with 0 psi and 91 octane and it runs ok. It a dog off the line but once the boost hits hang on it starts boosting 5 psi at 2400. It runs good at 7500 rpm's. No predetition nothing becides for the tires brake loose in 4th gear and after that the cluch slips.

Jungy · 06-23-2008

Why are you running a 1:1 fpr w/o a tuning system?!?! Are you running resistor packs on those low-z 450's? because the factory injectors are high impedance. I think the stock injectors and a 12:1 fmu would be a smoother and more trust worthy set-up under the conditions you are running it right now.

hotrodbrett · 06-26-2008

Quote:

Originally Posted by Jungy

Why are you running a 1:1 fpr w/o a tuning system?!?! Are you running resistor packs on those low-z 450's? because the factory injectors are high impedance. I think the stock injectors and a 12:1 fmu would be a smoother and more trust worthy set-up under the conditions you are running it right now.

For one I would not run a 12:1 fmu. My reason is that you max out your stock injector0 at bout 90 or so. Ok stock fuel psi with out vaccume is 43.5 psi. Ok so at 10 psi your fuel psi would be 163.5 psi of fuel. Ok that is way to much psi for your injectors to even think about trying to control. Befor you go with that figure out what you really need. To make this shorter I will skip all the fourmals. At 9 psi of fuel with stock injectors (235cc) you would want around 123 psi of fuel. Thats alot of fuel psi for the injectors to handle. thats why i got the 450s. yes i have the resitor pack. with out it you wont run verry long befor destroying the injectors or maybe you computer. so for the 450s you would want around 30 psi at idle and 40 psi at 9 psi of boost. but to run the 450s you would want a S-AFC for idle control.