I was wondering would I bennifit from upping the injector size from stock to 25lb and changed the throttle body to a 75mm on a stock engine. I know I would have to revamp the computer with a chip. Would this work or would I have to change the cam and bore the cylinders?
I was wondering would I bennifit from upping the injector size from stock to 25lb and changed the throttle body to a 75mm on a stock engine. I know I would have to revamp the computer with a chip. Would this work or would I have to change the cam and bore the cylinders?
You're a long way from needing bigger injectors and a larger TB. You'll need to do a long list of simpler bolt-on mods as shown on Horsepower Gains before you reach that stage.
Stock 19lb injectors with stock fuel pressure will work fine up to about 235-240rwhp. You can still use them up to about 280rwhp but with the fuel pressure raised by an adjustable regulator. Thereafter you'd definitely need bigger injectors with a MAF that's calibrated for them.