Backfire/pop on decel - Page 3 - Pontiac G8 Forum: G8 Forums - G8Board.com
Exhaust Tech Headers, Catbacks, Mufflers, lack of mufflers

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post #41 of 76 (permalink) Old 09-03-2010, 08:40 AM
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Originally Posted by DREV LSX View Post
The Fuel-Cutoff on Decel can be tuned out if you like but why? It sounds good.
That's subjective, and completely depends on the mods on your car. If you have HF cats or headers, the DFCO can become more than obnoxious, and may need to be adjusted 'less' for the perfect balance.


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post #42 of 76 (permalink) Old 09-03-2010, 08:50 AM
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Talk about reviving a dead post I totally agree that this is a completely subjective thing. I don't like it so much when I'm driving the car, but after following another G8board member I decided to keep it on.
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post #43 of 76 (permalink) Old 09-03-2010, 09:47 AM
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Originally Posted by Virus View Post
Talk about reviving a dead post
It was referenced from a very alive post... thus the only reason I did it.

Aussie's post is often quoted by me when explaining DFCO since he said it so eloquently! I've stickied this thread for that very reason.

I have DFCO reduced by about 50% or so, still a burble on decel, but the snap, crackle, pop, and honestly "rude" rearwards noises are non-existant. To each their own.


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Kooks LT's, SOLO HFC & Mach Unbalanced with J-pipes, SLP Tips.
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post #44 of 76 (permalink) Old 09-03-2010, 10:25 AM
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Zep, how did you modify it? Mine could use a bit of a tune down.

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post #45 of 76 (permalink) Old 09-03-2010, 11:25 AM
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Originally Posted by RealRedRocket View Post
Zep, how did you modify it? Mine could use a bit of a tune down.
PM Sent.


2009.1 ZEPCOM MGM G8 GT
Kooks LT's, SOLO HFC & Mach Unbalanced with J-pipes, SLP Tips.
Livernois tune, VCM, FE3's, full Holden blue gauges conversion, iphone on display. Daily Driver FTW
The ZEPCOM G8 was SOLO's test mule
www.youtube.com/zepcom

Bought 3/30/2009, retired 7/18/2017 at 136k miles, still strong. Been a great ride, she will be missed!
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post #46 of 76 (permalink) Old 09-03-2010, 11:31 AM
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Shoot, I want to turn mine up! 'Course, I could use a louder exhaust first.

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post #47 of 76 (permalink) Old 09-03-2010, 11:47 AM
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Honestly when listening to after market exhuasts on line i can't stand it. When i hear those same cars in person though it's like music to my ears! Can't wait to upgrade!!!

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post #48 of 76 (permalink) Old 09-03-2010, 03:32 PM
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Quote:
Originally Posted by zepcom View Post
That's subjective, and completely depends on the mods on your car. If you have HF cats or headers, the DFCO can become more than obnoxious, and may need to be adjusted 'less' for the perfect balance.

Especially if you have an m6. I recently put on a Solo catback and it gets old (the popping that is) shifting through the gears. I can't imagine what it'll be like w/ hfc.

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Last edited by jmac; 09-03-2010 at 04:17 PM.
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post #49 of 76 (permalink) Old 09-03-2010, 04:09 PM
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people make my head hurt lol...

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post #50 of 76 (permalink) Old 09-03-2010, 10:45 PM
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I love it, sometimes I just can't get enough.

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post #51 of 76 (permalink) Old 09-22-2010, 10:39 PM
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My Corsa Cat Backs do it when i let off the gas. I think it sounds great to hear a few pops.
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post #52 of 76 (permalink) Old 09-23-2010, 07:54 AM
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I heard a Mustang yesterday that was popping loud on decel! I don't think he had any mufflers at all cause when he took off from the light, I could hear it for a long time. Sounded beautiful, but I don't think I could live with that volume for long term.

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post #53 of 76 (permalink) Old 09-23-2010, 08:52 AM
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My magna flow 16795 eliminates the front muffler and resonators which makes for some good popping. With the m6, the 1-2, 2-3, and 3-4 shifts sound like a mortar going off. Even with cruise control on at 70mph, if you are on a downgrade at all she fires off 1 good round. You have to love it!

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post #54 of 76 (permalink) Old 10-24-2010, 04:33 PM
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post #55 of 76 (permalink) Old 10-24-2010, 07:41 PM
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I hear the pops when in manual mode and when driving up to the house I find myself in
4th gear and drop it to 3rd and give the pops over and over and love it love it.

I love the roughness of the Holden G8 GT.
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post #56 of 76 (permalink) Old 11-11-2010, 01:34 PM
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I can put up with popping when I hear the sound she makes under excelleration. It's a smooth pur on easy excelleration and an angry growl at wide open.

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post #57 of 76 (permalink) Old 11-11-2010, 02:19 PM
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Some of you are trying to tune it away while I am trying for more. Nothing like opening the cutouts and letting her pop away! But like was said many times, to each his own....


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post #58 of 76 (permalink) Old 11-12-2010, 12:19 PM
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Had the Kooks Long tubes 1 7/8" installed Nov. 3rd and she sounds reall great and gained 17 RWHP

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post #59 of 76 (permalink) Old 11-12-2010, 03:17 PM
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i had this tuned out a while back because it was a litlte over the top and quite honestly, i was embarassaed by the backfires. but i def sufferd about an avg of 2 mpg. kinda sucks. i didnt know there different levels of setting it. intertesting. Zepcom, send me a PM too.

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post #60 of 76 (permalink) Old 11-12-2010, 03:25 PM
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Quote:
Originally Posted by mtolivecracker View Post
i had this tuned out a while back because it was a litlte over the top and quite honestly, i was embarassaed by the backfires. but i def sufferd about an avg of 2 mpg. kinda sucks. i didnt know there different levels of setting it. intertesting. Zepcom, send me a PM too.
Are you saying you lost 2 mpg by having too much backfires or too little?

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