Another S/C'd member worried about his AFR

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Originally Posted by LtNoogie

Thanks to CTScott, I found the OEM fuel pressure regulator. It is not in a place that is easily replaced by an aftermarket unit. Since the fuel system's pressure is now maxed out at the 44.1 to 49.7 psi put out by the OEM regulator, using another regulator after this unit to get higher pressure is impossible.

Dyno guy now admits that replacement of the fuel pump (like Garm's turbo install) or replacement of the stock injectors is probably in order if the goal is to get more fuel to the engine during boost.

Calculating the proper injectors size, using the many online injector calculators, is a little bit daunting but I'll use them all until I can understand the concept and get consistent results.

I'd rather understand the science behind the proper selection of injectors rather than just shotgunning any device in and hoping that they do the job adequately.

If that is truly the problem, you could try a boost-a-pump. You need a scan gauge or tool that can tell you injector duty cycle to know for sure if you need anything.

You guys will not be able to solve this by just swapping out parts. You will solve one problem and create 5 more with bigger injectors.