I want to go with one of the 2 scenarios below which will flow into my Fuji exhaust:

1.) Long tube headers (PPE, SG, etc.) with Motordyne XYZ Y-Pipe with single cat.
2.) Stillen/Nismo equal length headers with Motordyne ART pipes to Motordyne XYZ Y-Pipe with single cat.

Does anyone have any dyno comparisons of long tube vs. shorty headers or what above scenario to go with? Looking for the most "usable" HP/TQ.

Thanks in advance!

 

None of the above....^....you'd only be hurting performance! MotorDyne ART pipes are a great idea along with one of Tony's dual exhaust systems....dump the Fjui! Forget the headers unless you plan on going FI....Gary

 

Thanks again for the advice Gary! I'm already fed up with my Berk HFC's. They rasped like crazy with my Stillen TD and now they hiss to much with my Fuji even after checking for leaks multiple times..can't win here. I'm finding it impossible to have a nice mellow sounding performance-minded exhaust.

I may just sell off the Berk's for ART pipes then go with the XYZ pipe with cat attachment. Do you or anyone know if that setup would pass CA emissions? I don't want to swap the ART pipes out every 2 years for smog checks.

 

a member on here switched from Momentum equal-length headers and MD ARTs for PPE long-tubes and he had some pretty huge gains up top w/a slight loss down low.

 

oh and since you're RevUp, you'll see some pretty nice gains w/headers. more with cams but not required like for non-RevUp DE

 

That is the ideal setup in my eyes to run with the XYZ Y-Pipe with HFC attachment but if the single cat won't pass CA emissions you're out of luck. I would love to get an answer on this...

 

I heard back from Tony at Motordyne and he said the single cat in the XYZ should pass the sniffer. Now all we need to know is what setup yields the most HP/TQ...long tubes or headers with ART pipes???

 

did you read my post?

 

I did thanks...also did some research on the PPE LTH's and some are saying 30+ HP which is huge. I'm a bit scared to run LTH's as you can't go back to stock cats so if you don't pass the sniffer or it gets a visual you're screwed or should I say out another $800 for the header uninstall. May just go Stillen headers with ART pipes with XYZ with single cat and call it a day. That setup should give the most output and give me more smog options just in case. Thoughts? Want to keep my Fuji to keep things as quiet as possible.

 

Sounds Good... i got the stillen headers just need to get myself a pair of ART pipes now... Good luck and let us know the gains !

 

What are you currently running with your Stillen headers? Did the Stillen headers increase the noise level at all or any other weird sounds including drone or rasp? Notice any power or MPG gains?

 

Currently i have the stillen duel catback and the stillen HFC'S i did notice an increase in sound and power when i floor it somewhere around 4k .

 

I have a thread review of the SGM compared to the TomeiV2+ART pipes. I am sure you'll be able to find it. I also run the XYZ pipe and recently i've done some dyno runs with and without the CAT module 10/5 loss in power.

No doubt that a good set of LTH will give you more power overall but they are more expensive.

 

^^ was waiting to see u post gabe.

how's the Gtm kit going....waiting anxiously

 

Still on going...

I'm actually in Singapore right now but I called Sam up this morning and he said that things are moving along. 3/4 of the bracketry are machined a completion date of mid march might be possible. Keeping my fingers crossed.