Ok, how is it that they get louder? wut happends inside of them that causes them to get LOUDER? especialy when there is noabsorbsion (sp) materials. how long should it take? cause mine seems to be getting quieter. had in on for a week, maybe im just getting used to it.

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- David
88' GTA 5.7L TPI MODS---> air foil, K&N, Shift Kit, 180* therm, TB bypass, Gutted CAT, Flowmaster 80 Series

 

Might be kinda annoying, but give it time.

I baught my car about 5 weeks ago. The Flowmasters have been on it about a year. So I couldnt tell ya

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1988 Jet Black IROC
5.7L W/ 64000 miles
Flowmaster Exhaust
Fully Loaded
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My IROC

 

either the metal gets heat-treated or the insides get coated with soot. I dunno why. My 40 series never had a break in period, just the 80 did.

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-Tas
'89 Formula WS-6

305, TBI, auto, 14x3 chrome flat based open element with K&N, Milodon 160* thermo, functional Formula hood, cross-flow Flowmaster, '99z28 rear pipes and tips....

To be installed eventually far far far into the future: Yours if the price is right and I don't have to ship :
Hooker 1-5/8" 50 state legal headers, Dynomax 3" I pipe (PN 44063 and 43248), Catco 3" cat, and injector spacer.

Super GRK_Taz World
F-Body Dual Exaust
EFI & Intake Options
AOL IM: superGRtaz