dynomax muffler

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04-15-2011, 09:17 PM

kev3321

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Join Date: Apr 2011

Posts: 2

dynomax muffler

just put new cat back system on lost power and no overdrive. on a 99 4.3 4x4 blazer with 85,000 miles had a tune up at 75,000 how to get power back?

04-15-2011, 09:20 PM

swartlkk

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Join Date: May 2005

Location: Waterloo, NY

Posts: 41,137

Considering that a cat-back exhaust setup should not have caused either of those problems, I would say that you somehow screwed something up in the process of installing the system. Are there any codes present that might point you in the right direction?

04-15-2011, 09:28 PM

kev3321

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Join Date: Apr 2011

Posts: 2

no codes put old muffler back on and helped out

cleaned maf ran seafom trough it. has no power when floored from stop has a hesitation. would like to put dynomax back one

Last edited by swartlkk; 04-15-2011 at 09:36 PM. Reason: *Combining Consecutive Posts* - Please use the edit function to add additional information in your post if another member has yet to respond.

04-24-2011, 06:57 PM

88Vic

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Join Date: Oct 2009

Location: Overland Park, KS

Posts: 178

Check the fuel filter and catalytic converter. Make sure the O2 sensor is good, it could be dumping fuel and clogged the cat. It's possible it or the wire got messed up.