[GeraldM2]

From my understanding fueling is a big issue when chasing power in these cars, before hpfps were made for our cars the only solution was port injection, but now most people just run an upgraded hpfp. I know that some people are running both an upgraded HPFP and Port injection. What would be the benefit of doing so? I am also considering doing meth injection to supplement octane/keep the engine cooler.

[cookiesowns]

Originally Posted by GeraldM2

From my understanding fueling is a big issue when chasing power in these cars, before hpfps were made for our cars the only solution was port injection, but now most people just run an upgraded hpfp. I know that some people are running both an upgraded HPFP and Port injection. What would be the benefit of doing so? I am also considering doing meth injection to supplement octane/keep the engine cooler.

The only reason someone is doing more than just an upgraded HPFP with PI is that they are still outrunning the stock injectors and/or the stage 2 HPFP solutions out there. Which is right around 500WHP on E85 pump.

Another option is direct port methanol + upgraded HPFP if your goals are around the 5-600whp range.

More than 550whp on ethanol means injectors + a stage 3 style HPFP, or PI