GT Motorsports: HR/VHR Stainless Steel resonated test pipes w/ 02 extender! IN STOCK!
 

Our much anticipated GTM Resonated test pipes for the 350ZHR/G35HR/370Z and G37 are now in stock and ready to ship! These test pipes feature high quality stainless steel construction with a polished finished, TIG welded, 02 sensor extenders to prevent a check engine light, and extra 02 Sensor bungs and plugs for an easy addition of aftermarket wide band sensors at any time!


Pricing and Purchase Information: GTM 350ZHR/370Z/G37 Resonated Test Pipes


-George
GT Motorsports

is there a packaged deal with the catback exhaust :)

Looks great George!

I will definitely be interested once tuning becomes readily available.

We can definitely work something out once our production exhaust is completed.

-George
GT Motorsports

Thanks for the compliments! I will be sure to let you know once we are done tuning on the 370Z, it isn't going to be an issue :)

-George
GT Motorsports

Those look really nice, George! What kind of gains can one expect from them?

Thank you, the gains will be the same as our previous test pipes, since the resonator we use is pass through (won't create any back pressure).


-George
GT Motorsports

Hey these look pretty damn nice!

Pictures + Dyno + Decent price = Good Job Sir.

Im going to be looking for test pipes soon. Waiting on sound clip differences between resonated and non.

We haven't had a G with stock exhaust with these on yet but a customer of ours is going to be installing these pretty soon, I will link the vid when available.

Thanks guys!

Sorry to be a pest George, but what type of steel are these made out of?

Keeping this in mind!

Does this come with the O-ring gasket?

Not being a pest at all, I forgot to list it! It is 304 Stainless Steel.

-George
GT Motorsports

No it does not, we could provide one at an additional cost if needed.

-George
GT Motorsports

So do you just tell people to re-use stock O-ring or do you feel you dont need one at all?

Also, I'm sure you've heard that 2k-3k rasp/flutter from the test pipes...How well do these pipes dampen that noise compared to say, the HFCs ??

Excellent!

George, can you answer my last question about the rattling...and I have one more...

Do these things really go bad ? I mean, I was told by a 350z guy who said he went thru a couple of sets in his 5 years with the car because they went bad...(not sure who's he was using) - So if true, is there some sort of maintenance to prevent stuff like that from happening ?

Ferris...Bueller...Anyone Anyone?

George check your PMs - Get at me!

I need to know this info based on your experiences and I have the money ready to put down...

I don't see how a test pipe can "go bad". Yes, a weld can break - that happens to both TP's and HFC. But the test pipes are literally straight pipes - there is nothing in there. There is no "brick" or substrate like a HFC - so there is nothing to blow out or "go bad'.

No, its not JUST a test pipe...its resonated, hence why I ask if they find that the resonated part goes bad quicker than say a HFC...

But a resonator is still just expanded tubing, is it not? The thing is still hollow.

Is it? I dont know? I thought it had some sort of mesh in that expanded area...If thats the case than ya other than the welds there wouldnt be anything that goes bad...

I need confirmation from GTM

I had Kinetix resonated test pipes on my 350 and it was hollow. Basically it's just a hollow chamber to allow sound to . . . well . . . resonate. But yeah, we should let George confirm.

Correct it is hollow, no performance decrease from a regular test pipe, just better sound!

-George
GT Motorsports

Great !
Sorry t-ray I thought it had something in the expanded portion! I stand corrected...

George, I'll like to order a set...just confirm with my PM...and I didnt mean FREE or anything! Incase thats what you thought :)

No problem man. Good that you sought clarification and didn't buy something you weren't 100% sure on.

So I fitted my resonated tp's today. And I can't see how anyone could reuse the ring gasket for the header flange. It simply does not fit over the male part of the gtm flange due to the diameter being larger. I have both brand new rings from nissan and the used ones from stock. And both do not fit. I used ultra copper liquid gasket by permantex. Fingers crossed it doesn't leak.

I know this thread is old but I feel my experience should be notes for interested tp buyers.