jtgli

iTrader: (13)

I have the top speed pro 1 3" exhaust with a 2.5" to 3" y pipe. I wanna eventually get header, but for now I wanna replace the oem cats with some resonated test pipes. My question is, will the resonated ones make a huge increase in sound and rasp like the non res ones do? The exhaust is already plenty loud and I really dont want it to get too much louder. So do you think that resonated test pipes would make a huge sound difference or should I be alright?

Blue_Streek

iTrader: (3)

no raps but the noise will definately be louder. but it will be a bareable loud. then again you have the topspeed exhaust so its always loud.


tommy

jtgli

iTrader: (13)

thanks for the info, anyone else?

undrgnd

iTrader: (2)

In my experience with every car that I have installed test pipes, including the Z33, it got noticeably louder. The resonated pipes sound better than the plain tps, but they are still louder than the cats.

davidv

iTrader: (2)

Test pipes will be more noisy than the OEM catalytic converters. How much more noise? A couple of decibels at WOT.

plumpzz

iTrader: (10)

A couple of decibles is a lot. The decibel scale is logarithmic

davidv

iTrader: (2)

What he said.

JhayRCruz

iTrader: (5)

i had rasp in my unresonated Test pipes/aps. Hated it!

Zexy

iTrader: (55)

Trust me..Any test pipe with topseed should be loud ENOUGH.

Zexy(talks from experience)

kourosH

iTrader: (3)

whats the legality of test pipes.....what about HFC's??

dTor

iTrader: (27)

Illegal.

Next question.

pchong154

iTrader: (1)

IMO resonated test pipes do NOT make a difference in amount of raspiness...

undrgnd

iTrader: (2)

^^^ In my experience, with the Amuse exhaust and JIC Y-pipe, resonated test pipes DID make a difference, and all but eliminated the rasp. You may have to spend a little cash if you want to get results.

Andy@Performance

iTrader: (92)

I just installed UTR RESONATED TEST PIPES with a JIC Bullet Y pipe on my Nismo exhaust today. I switched from Crawford cats and the NISMO y pipe, Ill let you guys know how it sounds.

jtgli

iTrader: (13)

Im looking at kinetix resonated test pipes. The resonator looks to be fairly large so maybe they wouldnt make it that much louder? If it is going to make a huge increase in sound I think im just gonna go with hfc since top speed exhaust is already dumb loud, i dont need it that much louder.

jtgli

iTrader: (13)

anyone?

singh

iTrader: (2)

I would go w/ the hfc....even though a resonated cat-delete would have better gains, but the hfc would pass the sniffers test and would give you good gains and would also sound great since you have a top speed exhaust. If your looking for a loud crazy fast track-only Z, go w/ the test pipes.

InsaneChink

iTrader: (8)

get some earplugs

04_CS_Z33

any updates on this?