Newbie to the site here looking for help PLEASE!!! Just got my 97 GSR from a 76yr old man and has 18K on it!!! I just installed : AEM V2 intake, DC 4-2-1 ceramic header, jackson racing cat, Greddy Evo II cat back, MSD wires, B&M press reg, AEM fuel rail, and VAFC II comp. Had it dyno'd and base with no VAFC tuning was @156whp tuned for half hour and six runs later with FP bumped to 52psi I'm at 170whp. The guys at the shop here are morons when it comes to tuning this computer and on my way home from the shop my check engine light comes on !!!! Anyone with similar set ups that has been sucessfully tuned please help!!!!! It will be very appreciated

 

If the fuel pressure is raised too high at a certain point, the computer will think it's seeing boost and throw a check engine light...thats straight off apexi's website, I was just reading about the vafc features.

Mike

 

I turned my fuel pressure down to 49 psi and it runs alot better. The engine code that it keeps pulling up is a signal error to the PCM...I called the local honda dealer and he said that my car doesn't even have a PCM???? So what is that supposed to mean? Thanks for the help!!!