Your quotes/info are wrong pretaining to the gearing you're using for the G4... Check it again... And that pipe is the wrong one to use for that motor.
Try the Nova 2630 pipe or the Skyline VR plus pipe for that motor.
Thanks for the support! I really apprecaite the help and assistance that you have given me! Back here, some people will make fun of you being igorant and they think they are better the person! Thats low for me...(no offense here in this section..and especially you Mr. Allan)
Hope someday i can easily tune my engine with my eyes closed