Intake & Exhaust Questions and info regarding various aftermatket exhaust systems for the G35 (Headers,Y-Pipes, and Cat-Back Systems)

Next step in exhaust system??

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Old Dec 22, 2018 | 12:19 AM
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Next step in exhaust system??

I have 06 g35 5AT with Z1 high flow cats, plenum spacer and Intake, installing a NWP 75 mm throttle body next week, muffler is stock because I like the tone. It’s deff louder with all this but I still feel like something is missing. I want to add a Z1 y pipe, would that be the missing piece I need to make louder and keep stock tone?
 
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Old Dec 22, 2018 | 10:04 AM
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Great first mods Tyler! My best advice buying an exhaust system, forget the damn y-pipe and look for a actual dual cat back system that eliminates it! To achieve maximum flow and sound quality only a cat back system works best! Which one is best has been discussed since '04, do a SEARCH! My opinion HKS or Motordyne!
Good Luck, enjoy the ride...Gary
 
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Old Dec 22, 2018 | 11:34 AM
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Thanks man do you know anything about Z1 in Georgia? They make some pretty good stuff for our cars and they have a cat back system suppose to be ridiculously loud!
 

Last edited by Tyler Garrett; Dec 22, 2018 at 11:44 AM.
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Old Dec 22, 2018 | 11:49 AM
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They make some great products but a single exit is weird on a G. I would stick to Invidia, HKS, or Motordyne only if you really want the best.

EXCEPT !!!!!!!

Your G will drone no matter what exhaust because you have a 5AT. Ask how I know .
 
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Old Dec 22, 2018 | 11:51 AM
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Yeah that’s what I was afraid of and I guess with the auto their is no way around the drone?
 
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Old Dec 22, 2018 | 12:52 PM
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"SLICK" has zero drone and she's running a AT!

Originally Posted by Tyler Garrett
Yeah that’s what I was afraid of and I guess with the auto their is no way around the drone?
Tyler, AT has zero to do with drone, you've replaced those very restrictive OE cats with HFC's and the rest of your exhaust system is over whelmed by the excessive volume! Imagine putting 32oz of dog sh*t in a 1 lb. can! That's what happens when your OE exhaust can't handle the extra volume...the dreaded drone! Only way to correct is with a high flow real cat-back exhaust system!
Gary
 

Last edited by gary c; Dec 22, 2018 at 12:56 PM.
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Old Dec 22, 2018 | 01:20 PM
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Hahah yeah makes sense

https://www.z1motorsports.com/exhaus...t-p-13387.html


any input on that system?
 
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Old Dec 23, 2018 | 10:06 PM
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Originally Posted by gary c
Tyler, AT has zero to do with drone, you've replaced those very restrictive OE cats with HFC's and the rest of your exhaust system is over whelmed by the excessive volume! Imagine putting 32oz of dog sh*t in a 1 lb. can! That's what happens when your OE exhaust can't handle the extra volume...the dreaded drone! Only way to correct is with a high flow real cat-back exhaust system!
Gary
Call Tony at Motordyne, Gary you dot know what you are talking about .
 
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Old Dec 24, 2018 | 09:42 AM
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Experience is better than someone's elses opinion!

Originally Posted by Urbanengineer
Call Tony at Motordyne, Gary you dot know what you are talking about .
Ok, then why with my HKS exhaust with 3" Magnaflow x-pipe (replaced the crossover) and Fast Intention HFC's don't I have any rasp? Oh yea, SLICK has an somewhat modified AT!
Gary
 
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Old Dec 25, 2018 | 07:10 AM
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Urban has a valid point. It seems there are a bunch of people that have paired the TDX2 with the stock auto transmission and have drone. And that's with a variety of high-flow/stock cats and test pipes. Hence his advice to call Tony and ask is spot on.
 

Last edited by Blue Dream; Dec 27, 2018 at 08:53 AM. Reason: Doh
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Old Dec 26, 2018 | 09:12 PM
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Knowing what I know now I would've done Gary's method with nice HFC because that smell sucks on a DD.
 
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Old Dec 26, 2018 | 10:19 PM
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I was just cruising around in a friends '65 Chevelle reminiscing about how I missed that smell lol.
 
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Old Dec 27, 2018 | 01:37 AM
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That's cool in an old car like that .
 
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Old Dec 27, 2018 | 08:55 AM
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I love the smell in any car. Takes me back to my old '72 Cutlass 442, man I really miss that car.
 
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Old Dec 29, 2018 | 07:35 PM
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Originally Posted by Urbanengineer
Call Tony at Motordyne, Gary you dot know what you are talking about .
I also call BS on the transmission dictating whether or not drone will be a factor.
 
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