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| Engineering/ Technical Ask technical questions about cars. Do you know how a car engine works? |
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#1
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was up
i want to put a i highflow cat back on my car but i want to know whats the best diameter i can buy the piping in order to get the most performance i have the option from 2"-3".... the guy is telling me to get it 2 inches in order to get the most back pressure but i want to make sure with u guys........i have a 95 honda civic ex.....thanks
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#2
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i've always been told 2-1/4" is best n/a but for fi 3".....i could be wrong about fi....but go with 2-1/4"
__________________
The name's Adrian 1990 Civic HB Si - 265.7whp/223tq @9.2psi. Tuned on NepTune by J.Mills 1991 Civic Sedan DX - 296.3whp/230tq @1bar. Tuned on NepTune by J.Mills 1991 Civic Sedan DX - 185.8whp/139tq. Tuned on NepTune by J.Mills 2006 G35 Coupe 6MT - Stock 2011 CR-Z - Stock |
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#3
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yup 2 1/4 is what i say 3" for F/I then agian bigger motors need bigger exhaust but thats another story
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