How much fuel pressure on boosted da9?

[royalpurpleda9]

Yo im putting a turbo t3/t4 on my da9 teg that has 180k and only have a fpr and a fmu thats 10:1 ratio .What psi of fuel should I set it to at a risky risky 10 psi of boost!! IM LOW ON DOUGH PLUS HAVE A KID TO SUPPORT<YOU DIG!!
And Oh ! I almost forgot to intro duce myself, My screen name is royalpurpleda9 simply because I would think nobody would have such a rediculous name!!

 

[Aussie]

Raising your fuel pressure is not a good option.

Stock fuel pressure is around 40psi. That is good for 240cc injectors at around 170hp. If you double your fuel pressure you'll get about 40% more fuel. So if you want to double your fuel delivery you'll need to add 4 times more pressure. Your stock rail, diaphragm, and pump will only support around 80psi. This is risky because as you increase fuel pressure you pump will take a massive beating and your stock injectors will get super hot because they will be running over 100% efficiency.

Really you should always run 40psi in the rail. If you want more fuel, buy bigger injectors. A stock fuel setup with some 600cc injectors will easily handle the 300hp range.

 

[royalpurpleda9]

Allright man cool thanks for the onfo Ill deffinantly get at least some dsm injectors off craigslist ,Ill holla at you later cause Im kind of new to the boost scene! Im just a repair tech.

 

[misterhmong]

don't know if this is something of use but anyway, my buddy with a boosted da LS rn a greddy kit boosted 10 psi on the turbo and blew the motor. got a new motor ran 8 psi worked better but ended up blowing that one also. it has been fine since he is only now running 7psi on a stock motor. he dyno at 205hp/147tq