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Old 05-07-2014, 02:18 AM   #16
aleros_eat_rice
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Join Date: Feb 2014
Location: Williamsburg
Posts: 300
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I just started thinking about it. I had a blocked egr passage, and that white sludge had to go somewhere. It probably is a clogged cat because of all of that sludge built up.

I'm going to pull the precat o2s and see if that's it.
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1999 Alero GLS, 3400, 4T45E, current mods: WAI with Spectre HPR cone filter, VVME 55w 8000k HID kit
275,000 miles as of 05-14-2015 at 1559 est (3:59 pm)
Planned mods: F body front brake upgrade, ported UIM, LX9 top swap, ported exhaust mans, performance cam. Eventually, turbo or supercharger.
1999 Olds Bravada, 4300 Vortec v6, 4L60E. Current mods (on it when I bought it):
75mm ported throttle body, NGK stage 1 plugs, stage 1 heads.
Planned mods: injector upgrade, exhaust headers
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