Hey guys. It's been a while since I've worked on my car. It's on the tail end and should be completely done within the next 2 years. I could use some help making a decision.

Tony has been fantastic making me a 1 off FI exhaust. It's my second one and I looooooove it.

But now I need cats. And I can't decide. My heart is turn between motordyne art pipes and the FI rhfc...

Is really like to get opinions on guys with an FI exhaust with either motordyne or FI cats. But def willing to listen to any advice or opinions in general.

Thanks all!!!

 

What's more important to you flow or sound?

 

Performance first
Sound second
Price last

 

Performance wise test pipes>hfc

 

Yeah. I know.
I am very fond of Tony, FI, and their quality.
But I also hear great things about motordyne.
I wonder what the motordyne would sound like with my FI..

 

If I remember correctly (from my research on 370z forums), they said art pipes and FI exhaust is not a good combo as far as sound goes.

 

If performance is first on the list, go with the motordyne ART pipes.

 

From what I've physically seen on dynos down here with 3 different g37/370z, FI had out performed or in one case matched art test/res pipes. Haven't seen with full exhaust though.

 

I find this extremely hard to believe. Do you have the Dyno sheet? If comparing test pipes to high flow cats, using the same Y-pipe, mid pipe, muffler combination that's hard to believe.

Obviously the HFC's are more restrictive. The ART pipes is also one of the best TP designs for our cars.

 

Going forced induction... Flow is most important to me. That's why I'm going with these!

 

IPL370GT, do you have emissions tests where you live? I have a set of Berk TPs sitting in my garage, but I have never put them on because of emissions tests. I hear it is a pain in the rear to put them in (I have watched the youtube videos), so I figure taking them off and putting them back on every year would suck... Think I should put them on anyways?

I have an Invidia cbe.

 

I guess if the sound really bothers me. I can slap on the FI. Does anyone have first hand experience?

 

Yes, we have annual emission testing. I've never had a problem
Doesn't the Berk have a Cel Fix/O2 bung? Never looked into berk

 

Some forum members have ran both FI HFC's and the ART pipes. I believe Kevalteam is one of them. You may want to shoot him a PM or look at his threads for the info.

 

Out of curiosity, do you have the hook-up in getting an emissions pass, or do you swap the TPs on and off for the test?

The previous owner of the Berk TPs that I have did the "CEL workaround" where you stuff some steel wool in there. Other than that, I don't know.