MagnaFlow Smell?
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Barry
- Posts like an L27
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- Year and Trim: 1999 SSE
- Location: Burnsville, MN
MagnaFlow Smell?
I installed a MagnaFlow HiFlow cat on my 1999 SSE about 4,000 miles ago. Since that time, if I am at highway speed and punch the accelerator to pass or for whatever reason, I smell something like rotten eggs or sulfur. Has anyone else had this problem or does anyone have any idea why this is happening? I thought at first it was due to it being new and need to "burn off" whatever, but I would think it would have done that by now. Thanks in advance for any thoughts.
1999 SSE. 112k, Cleared Corners, Mobile 1, Energy Suspension endlinks. Ported and Polished LIM, NGK TR-55 Sparkplugs, 180 drilled Intense stat, Flow matched injectors, Intense FWI, Intense PCM, MagnaFlow Cat.
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haro1225
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Re: MagnaFlow Smell?
Isn't the sulfur smell a sign of a plugged cat?
-Ryan
2004 GTO....LS1, LSA supercharged 525whp, 6MT
96 SSEi...September 2010 COTM........GONE
04 GTP comp G.... December 2015 COTM........GONE
2013 Audi Allroad Quattro
yourgrandma wrote:Hi.
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J Wikoff
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2009 G8 GT - Location: Central Illinois
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Re: MagnaFlow Smell?
When I put a Magnaflow on mine, it smelled like that for a little while. It went away.
WHITE WHINE - 1992 SSE Supercharged 236.26 ci (.040 Over) 15.090 at 90.2 MPH on old engine w/ slipping trans & melted O2 sensor - Gen 3 M62 and matching TB, Gen 2 Pully, Zillamotorsports Ported LIM, YT 1.72 Roller Rockers, SII FPR & Injectors, Hypertech Thermomaster chip w/ 160 Thermo, TransGo Shift Kit, Infinity/Pioneer Speakers & a 10" Alpine Type R Sub, all the watts, 140 amp Alternator, Ricepipe CAI w/ heatshield, Pilot Angel Eye Foglights, Clear Corners, '02 17" Chrome Bent 5's, Magnaflow F-Body Muffler and Hi-flo Cat, Ceramic Coated Ported Exhaust Manifolds, Fan Override, Monroe Reflex struts, red calipers
2009 G8 GT - Sport Red Metallic, loaded, SOLO Axlebacks, Rotofab Intake, Tuned, autodim mirror, removed intake manifold cover, HSV GTS triple gauge pod, two tone red-hot shifter and HSV SuperSport steering wheel, GXP rear sway bar and diffuser, 3.45 diff and various Camaro suspension bits, LED Taillights
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Barry
- Posts like an L27
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Re: MagnaFlow Smell?
If the cat was plugged, I'm certain there would be performance issues. It runs like a watch. I put it on in 2008 and have only put 4000 miles on since then as I only drive it a bit in the summer. Maybe it just hasn't been run enough. The smell only lasts for a minute or so just after I jump on it.
1999 SSE. 112k, Cleared Corners, Mobile 1, Energy Suspension endlinks. Ported and Polished LIM, NGK TR-55 Sparkplugs, 180 drilled Intense stat, Flow matched injectors, Intense FWI, Intense PCM, MagnaFlow Cat.
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RJolly87
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1994 Buick Regal Custom - Location: Las Cruces, NM
Re: MagnaFlow Smell?
I have smelled similar, I suspect its carbon or partially burnt fuel. Something like that. Maybe even deposits knocking loose or something.
I smell it from a lot of cars that get romped on on the highway.
I smell it from a lot of cars that get romped on on the highway.
~Randall~
1993 Buick Park Avenue - 197k - Some odds and ends done - Simply won't die
1994 Buick Regal - 78k - Bone stock - Always ready for a good kicking
1990 Oldsmobile 88 - Gone to a better place
1993 Buick Park Avenue - 197k - Some odds and ends done - Simply won't die
1994 Buick Regal - 78k - Bone stock - Always ready for a good kicking
1990 Oldsmobile 88 - Gone to a better place
Re: MagnaFlow Smell?
Can't really help pin down the issue, but I can say I replaced my cat about ~5,000 ago and occasionally get the same smell on the highway when my foot decides to get a bit heavy. Never had the smell from the original, all I can really assume is that it's not a big deal, especially since I only notice the smell at about 85-90mph 
Last edited by Bumzag on Fri Aug 07, 2015 9:59 am, edited 1 time in total.
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Barry
- Posts like an L27
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Re: MagnaFlow Smell?
Thanks for the reply guys. I didn't think it was anything serious, as there is no performance issue. It is just annoying and I was wondering if it was a common occurrence.
1999 SSE. 112k, Cleared Corners, Mobile 1, Energy Suspension endlinks. Ported and Polished LIM, NGK TR-55 Sparkplugs, 180 drilled Intense stat, Flow matched injectors, Intense FWI, Intense PCM, MagnaFlow Cat.