I have a GSR with an Injen CAI.. Stock P72 ECU.. I was considering going with a program that would lower the 2ndary engagement and also allow me to rev a 100-200 RPM's higher so I can land in my 2ndary much easier from 1st to 2nd..

When I bought my car it had a p28 chipped ECU with a single 5500 xover and leaned out the fuel a bit at higher RPM's, the car felt tons quicker then what I test drove it.

My future plans would be upgrading the valvetrain to rev to 9k, cams, and nitrous. Should I just wait on the chip for those following mods?

 

no need for any program right now. and for later on, purchase a hondata so you can dyno tune and change the maps based on what mods you get. i dont know if you can change the engagement point of the secondary runners, even via hondata.