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I contacted GHL and inquired about popping/gurgling with these. Surprisngly, his reply was that he did not know why there would be popping/gurgling. He actually referred me to the forums :confused: . Anyway, how many of you are experiencing popping/gurgling?
Please list:
1. If you have the 3" or 4" bullseye or 4" rolled
2. If you are experiencing gurgling/popping upon decelleration,
and have you tried to eliminate this (and how)?
3. Your overall happiness OR disappointment with these and why
I have had the Ghl's about 2 months. They are the 4" rolled as you called them. No Gurgling or popping on decelleration. I did not change out the H-pipe . I thought i would try them out and if there was the popping-gurgling sounds i would add the x-pipe. I'm happy with the sound and looks just as they are. :flag
I have the 4" rolled tips GHL's, with an X-pipe. Although there is some slight popping on deceleration it is not as severe as it was with my Corsa's. To mee it sounds cool. I know some do not like the popping on deceleration, it is just a matter of taste. If you do not have an X pipe, it will certainly help alleviate the popping. I actually love the GHL's. It has the closest sound to a 60's muscle car rumble I have heard.
I have the 4" rolled tips GHL's, with an X-pipe. Although there is some slight popping on deceleration it is not as severe as it was with my Corsa's. To mee it sounds cool. I know some do not like the popping on deceleration, it is just a matter of taste. If you do not have an X pipe, it will certainly help alleviate the popping. I actually love the GHL's. It has the closest sound to a 60's muscle car rumble I have heard.
Interesting, you have slight popping with the X-Pipe and TLY-BAMA, the post above yours has none with the factory H pipe. If I did get the popping, are there some X-pipes that eliminates the popping better than others? Magnaflow, Bassani? Or will the inexpensive C5-X pipe do just as well. I don't really care about HP, just that popping/gurgling..
I have the 4" straight tips. (they're not really a rolled edge). I don't think they make 4" bullseye's, only 3.5". The 4" tips are an LAPD exclusive too, other vendors won't have these, nor does GHL list them on their website.
I have considerable popping on decell. The tone is so deep I can't really call it a pop or gurgle though, more of a booming sort of sound. I would prefer it didn't have it, but it doesn't really bother me either. I had this system on before the X-pipe, and the X-pipe included with the FLP header kit made zero difference in thie popping on decell. Maybe other X-pipe designs make a difference, I don't know. I personally think the auto/m6 makes a difference, as automatic owners with all systems seem to experience this less.
Overall, I'm very happy with my setup, and would buy them again without hesitation. It sound very muscular outside, but yet very quiet in the car at cruise speeds. Loud enough to turn heads, but not quite obnoxious enough to offend the officers.
:yesnod: I agree with Y2Kvert4me with the A4/M6 differnce. I also describe the sound or tone as a deep throaty growl and if there is the burbling,gurgling, or popping it's not noticable enough for me to add the x-pipe at this time.
An aftermarket exhaust does NOT eliminate the popping, gurgling sound on decel that is common to C5's.
Only an "X" pipe will do that & smooth it out...
What do you mean "common to C5's?" I'm not aware that this sound is common to a stock exhaust. I know don't have it. I'm only aware that once someone goes to an aftermarket exhaust, thats when the gurgling/popping starts.
I've had varying amounts of what you call popping with all my exhaust setups: Corsa Indy's, Borla Stingers, and now Quad 4" GHL's. All were on H/C or Big Block setups and all had an X pipe (Corsa). Frankly, I think that's characteristic of the engine. I've spent much of my adult life racing all sorts of high compression, high output cars, and almost all sounded like this on deceleration from more than minimal throttle openings. Frankly, I like the sound, it's quite "racy." As to overall sound quality, the GHL's and the Corsa Indy's sound similar, though with somewhat different timbers, and both have NO in cabin resonance. I like the GHL's better than the Corsa's that preceeded them, and far better than the obnoxious Stingers that came between.
I just took my first long drive today with my new GHL system. I got the dual bullet tips (got to be different from the crowd!) and the Magnaflow X-pipe. On freeway and in street traffic, I have noticed a couple of pops (maybe 1-3 per instance), and they are very subtle. I have an MN6, so I have had a chance to play a lot with upshifts, downshifts, and neutral braking. I haven't noticed a significant difference in popping in any mode.
My ears are really sensitive to high frequencies, so I was looking for an exhaust that didn't scream at high throttle/revs. The GHLs alsways keep their timbre in the bass range. I've felt a little extra bass throat at cruise, but nothing obnoxious in the cabin. I stood on the sidewalk yesterday and had a friend do high speed passes so I could hear the exterior sound levels and they were much more genteel than I had expected. You could tell it was an aftermarket exhaust, but there is no way you would get little old ladies shaking their fists at you.
An aftermarket exhaust does NOT eliminate the popping, gurgling sound on decel that is common to C5's.
Only an "X" pipe will do that & smooth it out...
What do you mean "common to C5's?" I'm not aware that this sound is common to a stock exhaust. I know don't have it. I'm only aware that once someone goes to an aftermarket exhaust, thats when the gurgling/popping starts.
My 02 Z06 does it, and I love it, it's the nature of high compression engines, my stock Harley does it too :)
What do you mean "common to C5's?" I'm not aware that this sound is common to a stock exhaust. I know don't have it. I'm only aware that once someone goes to an aftermarket exhaust, thats when the gurgling/popping starts.
It's the nature of the beast. The stock exhaust is quieter hence the popping on the stock exhaust is quieter. Let off the gas at 4000 RPMs while in gear with your window down and next to a wall and you'll hear it.
What do you mean "common to C5's?" I'm not aware that this sound is common to a stock exhaust. I know don't have it. I'm only aware that once someone goes to an aftermarket exhaust, thats when the gurgling/popping starts.
It's the nature of the beast. The stock exhaust is quieter hence the popping on the stock exhaust is quieter. Let off the gas at 4000 RPMs while in gear with your window down and next to a wall and you'll hear it.
I agree.....my stocker (GHL's going on this week)....does it too. I just don't think most people hear it until they put on the louder exhaust. I believe it's actually called, as you said, "GOOD". A characteristic of HORSEPOWER !
You have used the three most popular C5 systems--what's the real story on SOTP differences?
I know it won't be dramatic either way, but I have the Indy and some claim it actually reduces HP/TQ.
Thanks in Advance,
Jack
Hi Jack; frankly, I don't think there's any SOTP difference. Lou believes the Stingers are good for a few hp. On my setup there was no dyno difference between the Borla's and the GHL's. We did not compare either to the Corsa's which we had taken off.
Basicly, I think you buy an exhaust to change the sound quality of the car (aesthetics) rather than to materially affect its performance.