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post #1 of 3 (permalink) Old 12-08-2013, 04:50 PM Thread Starter
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Header Exhaust Leak

After a few months of using the Bad Mab Header, noticed a leak coming from that area. Its funny how it started to leak when its emissions testing time. Noticed as well that the 3 bolts that mount to the downpipe, 2 were loose and 1 was missing. Ordered a new GM threaded bolt and downpipe gasket. Hopefully it works or may go back to stock and inspect the OEM gasket that was used to mount to the engine as well.


Just have to wait til the rain is finally done and the annoying leak sound :(

2009 Cobalt LS XFE U74
Mods: K&N Typhoon Intake, Option Cat-Back Exhaust, Cosmo Short shifter, Maxxim Ahead 17X7's, MPx shorty antenna, FE5 Strut/shocks, Tein S Techs, Moog endlinks, Moog spring seaters, ZZP shorty header, LSJ downpipe, LNF front grille
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post #2 of 3 (permalink) Old 12-09-2013, 10:40 AM
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Ive had a little trouble with mine as well. It started as a small leak only when it was cold, but now its persistent. Im thinking of trying remflex gaskets, but theyre a bit pricey.

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post #3 of 3 (permalink) Old 12-09-2013, 12:36 PM Thread Starter
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well, we have to remember GM does not care about product, they care about $$$, POS machines IMO. Assembled just like a Honda/Ford/Nissan/etc..their all made in foreign cheap labor rates to be honest. The only good manufacturers who take time and care in their products are the $$$$$ cars such as Koenisigg (Swedish name in a german factory), McClarean, Saleen (not mustang garbage), Ferrari, Lamborghini...you get it, exotics only.

Their warranty package is full of BS too, guy at GM tried to sell me a factory downpipe for $1k, I just laughed at his face and said "your so full of Sh*t" I can get better from an aftermarket company that will outperform your POS cast iron garbage, lol.

he said "to each your own"..I just chuckled and laughed at him and replied "now you know why your only making $9 an hour to deal with nonsense of anywhat in engine mechanics, go to school for f's sake"

Then gave the local Chevy Dealership a 1 on their CSI card and demanded to see their Service Manager, he now is sending me a complimentary card full of goodies for freebies on service

2009 Cobalt LS XFE U74
Mods: K&N Typhoon Intake, Option Cat-Back Exhaust, Cosmo Short shifter, Maxxim Ahead 17X7's, MPx shorty antenna, FE5 Strut/shocks, Tein S Techs, Moog endlinks, Moog spring seaters, ZZP shorty header, LSJ downpipe, LNF front grille

Last edited by 5t3alth; 12-09-2013 at 12:39 PM.
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