Hello fellow enthusiasts. I have a Frankenstein type of exhaust and I was wondering if anyone here has dyno'd their car with my similar set up and have had proven results with it. I have searched but not really found what i was looking for so any opinions or facts would be really appreciated.

I have 03Z
OBX test pipes,
370z stock y pipe (installed because nismo shitty y pipe cracked
and the rest of the pipe (midpipe and muffler are nismo)

I was concerned with the stock 370z y pipe being smaller in diameter than what the rest of the pipe is for my exhaust, so i was planning on changing it. any suggestions on aftermarket y pipe for a baller on a budget?

exhaust sounds great but does feel weird during WOT i believe due to the smaller y pipe diameter.

thanks for your time!

 

I think you answered your own question/problem!

 

my topspeed y pipe seems to be holding up really good after 1 year of use.

 

I wouldn't lose too much sleep over it. How much extra do you expect from any exhaust?

 

How does exhaust "feel weird" when you are driving?

On an NA car the difference will be negligible and even if it shows small gains on the dyno it won't be noticed at that level of hp.

 

Moved...

 

As long as the piping diameter and thickness is consistent You should be in good shape. If it tapers down or up then you might it might not flow as smoothly.