High Flow Cats vs. Test Pipes
just installed my metallic berk hfc's with my roadster with stock exhaust,motordyne spacer and pop charger...it sounds awesome...definitely a deeper tone...better growl...butt dyno tells me I gained a little power aswell... a little quicker...next up pulleys
http://youtube.com/watch?v=aGcsd047zV8
this is a vid of a nismo exhaust with megan TP, popcharger, and plenum spacer...no rasp at all
this is a vid of a nismo exhaust with megan TP, popcharger, and plenum spacer...no rasp at all
Originally Posted by Z You Later
http://youtube.com/watch?v=aGcsd047zV8
this is a vid of a nismo exhaust with megan TP, popcharger, and plenum spacer...no rasp at all
this is a vid of a nismo exhaust with megan TP, popcharger, and plenum spacer...no rasp at all
I put my headphones on and I can hear the slight hissing sound coming from your car too.
After your revs fall I can hear the small hiss.
Joined: Mar 2007
Posts: 5,311
Likes: 0
From: Dallas/NewYork/Michigan/Korea
Originally Posted by gsingh350Z
I put my headphones on and I can hear the slight hissing sound coming from your car too.
After your revs fall I can hear the small hiss.
After your revs fall I can hear the small hiss.
damm pro.
Originally Posted by xhooniex83
damm pro.
Joined: Mar 2007
Posts: 5,311
Likes: 0
From: Dallas/NewYork/Michigan/Korea
Originally Posted by Z You Later
good ear...never noticed it..the hiss could just be from the flow then? it's too common for nobody to not have fixed that issue
even i heard hiss sounds from Stock G37s.
Originally Posted by davidv
Helix SS Test Pipes. 16,328 miles and still going strong (knock on wood).
Its your choice...
I understand you don't like the raspy noise, but you have to make a choice. Cats are nice if the only thing your going to do is bolt ons and you don't want a check engine light. Test pipes will last you longer there's no doubt about that. I have a personal friend that has turboXS test pipes with a nice FI setup. The pipes are going on 2 years and still strong. What i am trying to say is when the time comes and ready to make real power. You will have to get test pipes and there is no point in going backwards...
Originally Posted by andrewc_31
I just got my 4.08 gears installed, driving around having some fun with the car when I here hissing noise sometimes when I accelerate other times when I let off the gas. It is kind of hard to describe, but it definetly does not sound right.
I have Crawford High Flow Cats on the car now, this is my second pair in 1 1/2. The first set, one of the cats cracked, bought a second pair, and I'm guessing the sound might be from the cats again.
If I have to replace the cats again, I'm done with the crawford setup. Can anyone tell me what cat or test pipe is a good product that will last and create HP. I'm not a big fan of the raspy noise the test pipes make, but if it will last more than a year then maybe i will consider it.
Thanks
I have Crawford High Flow Cats on the car now, this is my second pair in 1 1/2. The first set, one of the cats cracked, bought a second pair, and I'm guessing the sound might be from the cats again.
If I have to replace the cats again, I'm done with the crawford setup. Can anyone tell me what cat or test pipe is a good product that will last and create HP. I'm not a big fan of the raspy noise the test pipes make, but if it will last more than a year then maybe i will consider it.
Thanks
Joined: Mar 2007
Posts: 5,311
Likes: 0
From: Dallas/NewYork/Michigan/Korea
My ultimate racing hfc didn't throw CEL light got them from Adam@Z1auto
http://www.z1auto.com/submodel.asp?m...0z&cat=exhaust
got them from Adam@Z1autohttp://www.z1auto.com/submodel.asp?m...0z&cat=exhaust
I've had mine for about 3k miles, and I've never had a CEL either. I put the spacer on during install and have never had a problem. But wow are they loud with my after market exhaust. I'm seriously considering buying a quieter exhaust for that reason alone.
