top performance out of non turbo
#1
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top performance out of non turbo
i was reading another forum and someone said that if you put headers and a nice exauhst on your car it will improve your performance. i was planing on getting a electric fan for my engine to pump out some more horsepower but i dont have a turbo. if i get headers and i nice exauhst how much of a diference will it make. because i dont want to buy all the stuff and have it not make a difference.
#2
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Free flowing exhaust makes a world of difference on a rotary. Definitely felt an increase in power on the butt dyno. Dyno sheets should be floating around here somewhere...
James
James
#5
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You live in Cali?
Then what you're proposing is ILLEGAL.
On top of that, opening up the exhaust on an NA increases noise significantly.
Cops in Cali HATE noisy exhausts.
If you still insist on doing this, keep in mind that the engine will maybe make 200bhp at the most.
The car will be quick, but it's not going to be eye-popping fast.
-Ted
Then what you're proposing is ILLEGAL.
On top of that, opening up the exhaust on an NA increases noise significantly.
Cops in Cali HATE noisy exhausts.
If you still insist on doing this, keep in mind that the engine will maybe make 200bhp at the most.
The car will be quick, but it's not going to be eye-popping fast.
-Ted
#7
I live in CA and in the future plan to buy the Racing Beat cat-back, header, and bonez hi-flow cat. Would that be too loud or under 100DP?
BTW, it's an S5 NA.
BTW, it's an S5 NA.
Last edited by Sgt. Pepper; 03-08-06 at 11:43 PM.
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#8
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I live in Cali and since hearing some of the trucks around here I have no problem with having a loud exhaust. I heard a toyota tacoma yesterday, and it sounded like he was running just a header, and I didn't see and exhaust tips in the rear, it was loud as hell.
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I had a RB header, Random Tech cat, and HKS cat back on my second FC (my first FC was stock). The butt dyno dont lie. Probably picked up a good 15 to 20 hp. And it sounded nice and throaty. No chainsaw action. I am now on my 3rd FC and I just purchased the RB header again w/Bonez cat and Rotary Performance cat back system. Due to arrive on the 14th. will update once installed.
#12
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Originally Posted by mr0pistons
If you're in CA, I hope you have a dd, NA's are super loud with a header and exhaust.
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Originally Posted by Tournapart
hi flow cats are such a waste of money and time IMO......either go with cats or get a test pipe
#19
Originally Posted by Tournapart
hi flow cats are such a waste of money and time IMO......either go with cats or get a test pipe
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The only cat made that bolts to the RB header is thre mazdatrix one thats $$$. Anything else your going to have to weld a short lenght of pipe to to make it fit. Just about any good quality highflow cat will stand up. I had cheap catco cats on my car (without the header) for a long time with no problems. I'm about to try out magnaflow cats as well.
#22
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Originally Posted by b00b
i dont know about them being a waste of money and time....i recently changed my racing beat presilencer/downpipe setup for the bonez hi flow cat, and i didnt notice any difference in power. after changing to the bonez cat, i also passed smog.
oh, and i'm pretty sure the Bonez cat will just bolt between the RB collected header and stock y-pipe.
http://www.rx7.com/store/rx7/fcexhaust.html
Last edited by coldfire; 03-09-06 at 11:19 PM.
#23
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Originally Posted by drago86
The only cat made that bolts to the RB header is thre mazdatrix one thats $$$. Anything else your going to have to weld a short lenght of pipe to to make it fit. Just about any good quality highflow cat will stand up. I had cheap catco cats on my car (without the header) for a long time with no problems. I'm about to try out magnaflow cats as well.