I got rid of my cats on my AUTO and it sounded cooler but I couldnt FEEL the power gains... they might have been there but it's tough to FEEL 5 HP... track times might show.. dyno charts too... I would loose the cats for nothing else other then the sound.. it sounds so much more bad ***.. if that's your thing... the cars come with HEADERs from the factory.. they arent great as headers goes but they are much better then most exhaust manifolds I've seen... that's 150 bucks for headers, shorties... LTs are more proabably more like 250.. might not show you any gains with a stock setup... might wanna spend the money on something more productive.. though if you're like the rest of us once you start modding you wont stop... so it'll be something you can grow into
-as
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'89 GT Convertible:
TFS TW Heads, TFS Street Intake, TFS Stage 1 Cam, FMS 1.6 RRs, 24# Injectors, Pro-M 75mm MAF, No Name CAI, 3.73s, O/R H-Pipe, FlowMasters, AOD w/ Trans-Go Shift Kit
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