I have a S14 and I was just wondering what the best ecu upgrades for the S14. My goal in Horse Power is 400. I can understand a standalone fuel management is necessary for someone who wants about 500 Horse Power, but I don't think it's really necessary to run 400 Horse Power. I was thinking about getting the Jim Wolf Ecu Upgrade to support 550 Injectors. I also seen a ecu upgrade at Heavy throttle for sale, which supports 550 CC injectors. But if anybody has an ECU Upgrade on this forum can you please tell me about it. Can you tell me if you like it or not, and can you please tell me any good things about the ecu upgrade. Will the 550 Injector ecu upgrade make my car idle horrible or ok? I planned on running the 550 cc Injector ecu upgrade with an HKS VPC and GCC. Can I also have people opinions on what they think about this set up.

Thanks

 

I would go with JWT, I use it on my fwd SR. It runs great, safe, and is tuned to make power. when the 240 is ready it will get the JWT upgrade for the 50lbs and new maf...

 

jwt with safc