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Cooler EGTs, better mpgs, and a little better spool-up are just a few benefits from both 4 & 5 inch systems, better than stock for sure. 4 inch is plenty big unless youre going for serious ponies upwards of 500. You can change the sound with different mufflers, or straight pipe it altogether :w2: 5 inch would be a PITA IMO.
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I didn't notice any difference in EGT's when I pulled off the stock garbage and put on the 4" straight pipe, and my mpg actually went down. I think it made in infinitesimal difference towing, but not enough to justify it. On a stock truck, it's just more noise.
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Originally Posted by stokes44
(Post 955648)
were is the best place to by
do I need to change the down pipe does 4" give more hp how much hp and mpg can I expect if any? Thanks for any help ---AutoMerged DoublePost--- correction does 5" give more hp |
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