aleborjas
forum member
how many whp can hold the stock injectors on a manual car spining 6500 rpm's with heads and cams!
run BBR stage 1 or stage 2 comp NSR
run BBR stage 1 or stage 2 comp NSR
wish people give trap speed.. trap speed show HP.. ETs vary so much with traction (slicks, drag radials, street radials), and driver skill
On a 40-43lb fuel pressure sytem. Naturaly aspirated (.5 bsfc).
The stock 24lb injectors are good for around 385 fly hp at a 100% duty cycle. Which is around 335-345rwhp based on drivetrain losses. Which is really maxing out your injectors!
On a stock GT with 300 fly hp the 24lb injectors are at
about 75% max duty cycle. Which is safe for the engine and your injectors.
So you heads/cams, n/a guys going for 330-360rwhp. to keep a safe duty cycle go with the 30lbers and call it a day. They are good for that 385 fly hp at only 75-80% duty cycle.
And for those going for 360-400rwhp n/a, get the 39lbers. They are good for 420-430rwhp at 80% duty cycle. Which will be plenty for a n/a monster.
Yeah you are def maxing out your stock injectors!! Definetly at those upper rpms. Im guessing your running a shot or forced induction with that power, which changes the ideal air fuel and bsfc for the formula. Regardless you are not only are maxing the injectors flow rate, the pulse width is probably so great at that rpm and power u are in a danger of running out of fuel and fryin those injectors. Im sure it can handle it every once in awhile but its still borrowed time. Be careful!