I haven't found a definitive answer from someone who KNOWS THE ANSWER to this question: I have modded my car: fresh air intake from Needswings (single); removed resonator at far rear of exhaust; stacked pulleys from Eurocharge and Needswings (65/83mm), supercooler from Nwngs, one range cooler NGK spark plugs,
and will add an ECU tune, Transmission tune, and possibly straight exhaust from NDSWINGS.
QUESTIONS: What else must I change (assuming drive train is okay as-is):
1. what size injectors (if oem are too small)? [please specify mm or cfm, not model number]*
2. Fuel Inj. rails?*
3. Fuel pump (how gal. per minute?)
4. oil dump for excess oil?*
5. Anything else NEEDED? Not looking to spend money, but to do what is appropriate and NECESSARY for the car to run well.


Thanks, for your learned input.

 

Stacked pulleys will require bigger injectors for sure 550's are the most common but just about any tuner can tune for 650s or 750s on this platform. Upgrading to at least the SL55 fuel pump will give you piece of mind to not run out of fuel at higher demand. Do not waste the money on a looped fuel rail. The supercooler will not be enough to keep temps cool with stacked pulleys for extended or back to back runs. I would suggest at least a secondary fluid tank for the dedicated cooling loop for the intercooler and supercooler...or you can go KillerChiller and skip the supercooler and tank.

 

Several c32 guys are running 181/65 on stock injectors and similar mods just get a good tuner I went 185 and highly modded on stock injectors i went with a company called vtech to remote tune my ecu and i am running there tcu best move i ever made

 

get a recordable wideband datalogger on the car to see your most likely dangerously lean air fuel ratio that is happening. then we can address the fuel system once that wideband is on the car and we can see the ratio.