Exhaust piping diameter question
#1
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Exhaust piping diameter question
I know that this has been asked many times, but I have searched until my eyes hurt and I am tired of reading all of those damn posts. I have an 88 NA. I want to put a whole new exhaust setup on it. Im not iterested in keeping it quite, but im not made of money so I want to try and keep the cost down. I was thinking a single outlet exhaust setup would be better performing and cheaper, but Im not sure if I should go single or true-dual. I am more interested in getting more low-end torque than high-end. Emmisions are not a factor. I was thinking a single outlet header, presilencer and single straight-through muffler. What piping diameter should I use. Is single outlet the way to go or is true dual better? I want to retain my 5/6 port operation also. So let me know what you guys think. Sorry this is so long. Thanks
#2
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Ture dual is best, but no ehxaust mod will give you low end torque on a N/A rotary. It's just the nature of the beast. I have NOTHING below 3500 RPM, but above that, she screams (when she is runnin that is). Go for a 2.5 inch diameter. It will flow better, freeing up some horses, but will still leave you with enough back presure. I am assuming you ar4e not keeping your auxillary ports working? If you want them to work (which is Mazda's way of giving us N/A guys bottom end) I reccomend a Bonez superflow system and a N1 catback. If you decide to go for top end (like the rest of us ) Then get a Racing Beat header, Racing Beat presilencer, and then an N1 single catback. Wait a minute...that is the very same syatem I am running!! It cost me about $900-$1000...
Racing Beat: www.racingbeat.com (also good place to get true dual set-up, but will cost you about $850)
Bonez Superflow system: http://www.rx7.com/cgi-local/2catalog.cgi?cat=4&part=1
N1 catback:http://www.rx7.com/cgi-local/2catalog.cgi?cat=4&part=3
Racing Beat: www.racingbeat.com (also good place to get true dual set-up, but will cost you about $850)
Bonez Superflow system: http://www.rx7.com/cgi-local/2catalog.cgi?cat=4&part=1
N1 catback:http://www.rx7.com/cgi-local/2catalog.cgi?cat=4&part=3
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