Im sure this subject came up allready. What would be the best test pipe for an 06' ? I can get a Invidia 70mm test pipe for $65. Should I buy it? Did I mention, I dont want my check engine light to go on.

 

T1R 63mm bang for buck. quality piece.

 

Megan racing t/p

 

i have the 63mm T1R && it was the most noticable increase in power ive felt, more then my catback exhaust and intake combined!

 

Is bigger better? So no on the envidia tp.

 

i "think" anything close to 70mm on a S2k should be for forced induction only, due to loss of "efficiency" in the low-to-mid rpm range. I "suppose" because of a decrease in back-pressure.

 

The only upgrades I currently have is a 2.2 Mugen header I installed 3weeks ago. Like to keep the stock exhaust for now. Then maybee a J's single full ti exhaust system.

 

weren't people saying that 70mm exhaust was good for performance for N/A as well

 

Berks FTW!

 

sounds good, single is the way to go, except for the loudness..lol..the test pipe makes one of the biggest diffrences. Our stock cats are super restrictive! I have a T1R 63mm TP on mine, I love it.

from my experiance, 70mm gives you gains in the upper RPM's & you loose power in the lower rpms. opposed to smaller piping which give's you gains in the low-to-mid, and do not loose power in the higher RPM's.

It really depends on where you want/need the power.