i have an 03 g35 coupe, does it matter if i get an 03-07 hr ypipe from a 350z or a hr ypipe from 07-08? any differences?

 

:facepalm: Hr engines were only 07-08... Which means anything before that is the same thing as you already have

 

Oh ok thanks

 

Just installed my HR Y pipe and so far it is hard to tell any kind of difference. Hopefully it will get better with some time. I see that some have reset their ecu. Is this necessary?

 

^ Not necessary but advisable for your ECU to more quickly learn the new setup. I doubt you'll notice any difference in performance, and if you haven't noticed a difference in sound (it's very subtle IMO) you probably won't with either time, ECU reset or both.

 

Ok I take it back now. I drove over 150 miles today and it feels totally different. Accelerates much smoother.

 

Resetting the ECU would have achieved these results sooner.... the Y-pipe is a change in the air flow of the engine.. albeit slight.. not like headers or a turbo... it's still a change.. the A/F ratio mappings are affected, so the ECU needs to be reset to compensate for this change.

Regardless... welcome to the HR Y-Pipe Club ! and enjoy!

 

I fully intended to do a reset of the ecu but had unexpected activities with family so didn't get the chance. I am happy the car sorted itself out and I am very happy with my purchase. I love my car all over again!!

 

nice!.. glad you like it!!

 

What's better the HR Y pipe or Megan Y pipe?

 

anybody?

 

I'm gonna say the HR Y is better. The megan Y pipe is the same design as the stock Y. The HR is better because the curves are slighter letting air flow threw better. Megan does have another Y pipe that is the same designe as the HR. now that one i'd get over the stock HR Y pipe.

 

Ya this is the older Megan pipe. The new one are not that expensive either. Hope I can find a good deal on a HR Y pipe and HR cats

 

Wow this might have to be a future mod for me!

 

damn im taking into consideration of justt redoing the exhaust my self ....just tell the guy at the muffler shop to follow that design of the HR y pipe, he said he had already done a few G's and Z's that he did their whole exhaust but that he did it 3 inch,said it sounded bada$$ who knows..