Will I need different jetting for my RIVA pump gas ported cylinder? '98 GP1200 with 150lb head mod, Riva CDI (MOD1), V-Force reeds w/ Riva spacer, F/A, & Riva RPM jet kit - 120 pilots; 112.5 mains; 2.3 n/s w/ gold spring.

I was under the impression you need different jetting with just adding on F/A's. Try calling Riva's 800 number if nobody is responding on here. Faster response most of the time anyway.

LarryTT, This is Riva jetting, but I don't know if it's right for their pump gas porting. I was unable to reach anyone on the tech line and had to leave a call back number, so I'm tryng here also.

I havent' been able to catch up with our tech rep. Please call him directly at 954.247.0705 or e-mail him at tech_support@rivayamaha.com.

I caught him.