HELP! fuel pressure/ 9psi max boost b4 130% duty cycle.
10-01-2013, 12:03 PM
#1
Teching In
Thread Starter
Join Date: Jul 2011
Posts: 32
Likes: 0
Received 0 Likes
on
0 Posts
HELP! fuel pressure/ 9psi max boost bc factory wiring won't feed pump?
I have an 03 silverado 6.0 78 mm turbo. 60 lb injectors , walbro 340 lph in the tank. I am currently running 9 lbs of boost. when i try and turn the boost up i cant bc its goin to 130 % duty cycle i think its bc the fuel pressure drop when i try and add more boost. stock lines. would running a 10 guage hot wire kit to the tank solve this problem completly or will i have to run a return line to the tank and put an boost reference FPR on the fuel rail?
any advice would really help. thanks
any advice would really help. thanks
Last edited by Sweetser54; 10-01-2013 at 06:19 PM.
10-01-2013, 12:55 PM
#5
Teching In
Thread Starter
Join Date: Jul 2011
Posts: 32
Likes: 0
Received 0 Likes
on
0 Posts
the injectors r working harder bc fuel pressure drops alot at wot in boost. 9 psi is as high as i can go and its at 73 % duty cycle there. any higher on the boost and it goes to 130% at 11 psi. hot wire kit 10 guage to the pump for more volts? will this solve the problem or will i have to get a boost reference regulator and run a return line to the tank and mount regulator on the fuel rail?
Trending Topics
10-01-2013, 04:54 PM
#9
Teching In
Thread Starter
Join Date: Jul 2011
Posts: 32
Likes: 0
Received 0 Likes
on
0 Posts
ferocity02 thank you for your advice. i think u r the only one that actually knows what im saying. so u think this will let the pump work to it capability and then i wont have this problem anymore. i should be able to get to 550 rwhp easily on my set up. im just trying to set the boost at 12psi and i was confused bc i know the pump and injectors are more than capable of that.