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Northwest Chapter
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11,824 Posts
The GM people say the TB does not have duals b/c the gas tank is in the way. If so, how do aftermarket duals get around that problem?
Look at the pics of the aftermarket systems, they go in between the rear axle and spare tire. I guess they're close to the tank and remember they're all "Off-road ONLY" so theres no responsibility if your tank blows up (which it wont man, lots of people have duals, Ive had them on my 02 I6 for like 3 years).
 

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2003 chevy trailblazer_ls
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1,749 Posts
I got mine custom made at a muffler shop. With tips & installation it came out to about $150.00....I don't think it'll cause the tank to heat up so much as to blow up:m2:
 

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2007 chevy trailblazer_ss_1ss
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1,852 Posts
They probably thought you meant true duals, in which case the gas tank is in the way. As for duals out of the muffler, that's probably because of cost and ease of manufacturing.
 
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