Advice on 3" Exhaust Combo: JDL EL Catted Header, Nameless OP/DP, Perrin Cat-Back

[Chad86]

I am in the same situation as you both. My exhaust is too loud! How did you remedy the situation?

UEL uncatted header
overpipe frontpipe with cat and resonator
catback with Magnaflow resonators

Originally Posted by rtyp3

I ended up with:
1) JDL catted UEL Header
2) JDL 3" catted OP/DP with resonator
3) Perrin 3" Cat-back
Also ran Unichip.

Was definitely too loud for my tastes... Especially on cold-start. Ended up putting the factory OP/DP back on and contacted JDL, they were gracious enough to offer to send and try a 2.5" OP/DP they had. Just received it and haven't installed yet. I think it is the perfect volume and sound with just the UEL headers and cat-back, but I know I may be giving up a few HP until I throw on a better OP/DP.

However, since then I have removed the Unichip and installed OFT, which can be tuned to limit noise during cold start... So the 3" may be manageable at this point for some.

Here's my recommendations:
-if you're getting a tune which reduces cold start noise, 3" might be ok, otherwise stay away.
-if your like me, and don't want to appear like the teenager with the ridiculously loud tuner car driving into work, don't get the full 3" set up.
-if you don't care about noise levels being really high, you'll be fine. But then again, if you don't care about noise I doubt you would bother with resonators and dual cats unless you had to for emissions.
-after installation I agree with the other posters regarding not noticing the difference with 2.5" vs 3" unless running forced induction.

I probably won't put the 2.5" pipes on for a few weeks, but when I do I'll report back.

Originally Posted by kstccf

I have the same issue with rtyp.
I have 3" JDL UEL header, 3" JDL op, 3" JDL high flow catted FP, 2.5" ptuning midpipe with helmholtz resonator and 3" ptuning exhaust with dual muffler exit. Fitment is spot on when i work under the car and quality is one of the best i've seen.

HOWEVER....

It drones around 1-2k rpm, quiet around 3-4k rpm and loud all the way to redline. Cats and dogs jumped and run away when i start the car or accelerate. I even scared an old lady one time while i was passing by around the park.
Is there a quieter aftermarket exhaust? What about invidia Q300 or 2.5" perrin resonated?
what should i do to reduce the noise and drone?
Should I just go back to stock catback?

[Chad86]

Anyone, anyone?

[ame="https://www.youtube.com/watch?v=uhiCFdWeQfA"]"Anyone, anyone" teacher from Ferris Bueller's Day Off - YouTube[/ame]

[kstccf]

install a turbo kit and it will fix the drone. I have had friends switched to Perrin and the noise went down.