Around 50-55lb/hr is the biggest that can fit using the stock injector driver. I forget if it's low impedence or high impedence stock, but past that you have to get a new injector driver.

Turbo Tom is running 96lbs last I heard and had to get a new injector driver so the stock ecu could run the bigger injectors. He's also pushing 400+hp.

2000 Rio Red I4 Cougar 200whp & 210wtq at 9psi 254whp & 276wtq with NX 35shot WRX TD04 Turbo, Cut Short Shifter, Strut Tower Bar, 17" ZN Wheels, Roush Springs, Starion Intercooler, NX 35 shot, HKS SS BOV, Full 3" exhaust,StreetFlight Chip