I currently running TODA specB package together with a Yoshio reprogrammed ECU. According to my Greddy A/F meter reading, I have to add 10-15% fuel with the VAFC just to make it run NOT extrmely lean. I heard that it is not a good idea to add that much fuel with the VAFC alone and the stock injector probably max out already. So I am thinking of buying a bigger injector.

So which injector would you guys recommend? I am thinking of either the Prelude injector or the RC 310cc one. Also, I would get a FPR and goto a dyno next spring to have it tune.

If I get the RC310cc one, will I need to have my ECU reprogram again or a FPR, VAFC, and some dyno time will help it tune in?

Finally, where can I get a good deal on those injector?

 

I think you should get the RC 310cc injectors
along with a fpr from AEM, SX or Aeromotive
I think a fpr and vafc would do the trick

 

Thanks, did the RC 310cc one have the same spray pattern as the stock one and is it direct bolt on to the stock fuel system?

 

bolt on