Too lazy to search, and i wanna know on a personal basis. On 720 cc injectors with an s5 turbo, racing beat exhaust, running a fd fuel pump, how far have you gotten with power on a stock s4 block. somebody has to be running this setup....


thx

 

your not going to see that much of an increase in power just by upping the cc's on the secondaries. you'll need to get a s-afc or a standalone to adjust air/fuel mixture if your wanting more hp. but with 720cc and proper tuning, about 260hp?

 

Too lazy to help you.

Seriously man, is that really the way to ask people for help?

 

the 720 would prolly make you lose some power, as it would be too rich ( stock ecu doesnt know the injector size, it just knows what length of injector pulse, so that means more fuel is coming out per pulse then the ecu was programed for, so it will run too rich!

if your running higher then stock injectors id recomend a SAFC or somthign to control those injectors a bit more or your gonna have some really rich areas..

rtek 1.7 is designed for 720CC injectors, but im not sure how it will run with an s5 turbo.they are slightly diff efficiency rating..

yeah id agree with sidglo you would get about 260-270ish to the flywheel if tuned corectly.running like max boost the turbo can safly handle 12-14 psi??

 

Stock 4 x 550 support about 230hp at the wheels safely.
Add 2 x 720 secondaries, which increases fuel approximately 15%.
This means add 15% more power.

Add 4 x 720's, which increases fuel by 30%.
This means add 30% more power.

DO THE MATH.

This is power potential, and like everyone else is saying, you need to increase airflow with the fuel to make more power; don't expect power to miraculously appear when you up the fuel capacity.


-Ted

 

Just go buy an SRT-4.

 

BLASPHEMY!...