So I have been looking into the TopSpeed Pro1 Exhaust, but I have found two different setups. One is a HKS Replica Catback Dual exhaust with 2.5" piping and 4.5" tips, and the other is a Catback Setup with a Mid Resonator that has 3" piping and I believe 4" tips.

I am confused here in the sense that some say the 3" piping will decrease low RPM power for a NA G35 Coupe, but will be louder.

I am wanting a louder exhaust, and could care less about HP gains honestly from an exhaust system, but do not want to lose power or HP along the way somehow. I do not know too much about all of this as I am new to the exhaust world -- all I know is I do not want to modify my stock exhaust.

So what is the best way to go here for a louder exhaust without power loss? 2.5" or 3" piping?

Thank you all for the help!

 

This should fit your needs.


Or do something along the lines of that, like bring it to an exhaust shop and have them weld a muffler on it. BINGO

 

I would go w/ Motordyne. Tony did his research when making this exhaust.

 

This will help even more for engine performance:

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I am ashamed to say that when I was 16 I did this. I was cool until it came time for inspection.

 

Good advice here^^

 

Loooool is that your youtube tex?

 

Omg, this is so funny. That thing seriously sounds like shreks butthole after a night of taco bell.

 

No, that was back in 197o there was no YouTube back then .