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Hi frank lee
several years ago i had a full custom exhaust fitted. from manifol to tail pipe worked out cheaper then other places. when i went in asked about replacement i was offered options on the cat pipe size silencers and noise level. i decided to go with the mid range noise which is close to standard. smallest tailpipe. they did i fantastic job and a test drive around the block to if i was happy. no i wasnt becase i could hear every cynlinder explosion. told about it. car put up on ramps and silencers swap and one moved in system. end reasult a very quiet 8% improvement in mpg. all im saying is talk to custom exhaust places if they wont do what you want then walk away. my stepson is still driving it and exhaust still looks brand new after servral harsh winters with salt on the roads.
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