ms3 prc heads and out of injector?
ms3 prc heads and out of injector? just got my ms3 cam and prc heads install finished and when i went for a tune the car ran lean as hell (15:1) and i had a 98%+ injector duty cycle... i did'nt think i needed bigger injectors for a h\c swap but its lookin that way....
BTW EVEN OUT OF TUNE THRUGH A 3500 STALL (UNLOCKED) I PUT DOWN 400RWHP .... IM PRETTY CONFIDENT THE CARS GOT ANOTHER 20-30 HP WHEN I GET THE FUEL
BUT DOES THIS ALL SEEM RIGHT OR AM I MISSHNG SOMETHIN??
BTW EVEN OUT OF TUNE THRUGH A 3500 STALL (UNLOCKED) I PUT DOWN 400RWHP .... IM PRETTY CONFIDENT THE CARS GOT ANOTHER 20-30 HP WHEN I GET THE FUEL
BUT DOES THIS ALL SEEM RIGHT OR AM I MISSHNG SOMETHIN??
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TECH Senior Member
Joined: Mar 2004
Posts: 14,620
Likes: 17
From: BFE
Another way to do this is to install a fuel pressure regulator at the rail with a return line.
Your injectors can handle ~450rwhp but AT 58 psi.
With stock system, psi drops to 52/53 at WOT and that is why your injectors are maxing out early.
Your injectors can handle ~450rwhp but AT 58 psi.
With stock system, psi drops to 52/53 at WOT and that is why your injectors are maxing out early.
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Originally Posted by PREDATOR-Z
Your injectors can handle ~450rwhp but AT 58 psi.
I thought it would be about 450rwhp im a m6 car. Which would be around 420 on a a4 car anyway
im just gonna get a set of 42's and call it a day ... i was just a little concerned but hell since its common for this to happen its all good .. hopefully ill have real numbers in a week and ill post em up
TECH Senior Member
Joined: Mar 2004
Posts: 14,620
Likes: 17
From: BFE
Originally Posted by Jpr5690
im just gonna get a set of 42's and call it a day ... i was just a little concerned but hell since its common for this to happen its all good .. hopefully ill have real numbers in a week and ill post em up
Look, keep in mind you'll have to upgrade your pump. Racetronix + harness is a nice PnP upgrade, and look at a fuel rail regulator, you'll feel the difference.
Originally Posted by PREDATOR-Z
If you do not plan on spraying in the future, 30 lbs SVO are better. They are 34.54 at 58psi
Look, keep in mind you'll have to upgrade your pump. Racetronix + harness is a nice PnP upgrade, and look at a fuel rail regulator, you'll feel the difference.
Look, keep in mind you'll have to upgrade your pump. Racetronix + harness is a nice PnP upgrade, and look at a fuel rail regulator, you'll feel the difference.
Originally Posted by 35thls1ss19
whats the dif. between the 30lb svo and like a 42 lb injector? thanks for the help
At 408/390 Na my stock injectors were at 90+ % percent duty cycle, I went with the Ractronics in tank pump and RT's 37lb injectors for my 100 dry shot. Definetly dont want your injectors going static at any time.