Mid Pipe Mod????
#1
Yes it's twin turbo...
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Mid Pipe Mod????
im not sure if this been talked about but i was wondering if there would be any benifits of having a mid pipe that splits into 2 pipes and then back into one again. one pipe being a strait pipe and the other w/ a hi flow cat. then where the 2 pipes split up there would be an exaust valve that controls the amount of exaust that goes through the strait pipe. i think this would be useful so u wouldnt have to unbolt ur mid pipe all the time to put a cat on it. with the flip of a swich u could run a hi flow cat or a strait pipe. ive included a ghetto drawing on paint so u guys can understand what i mean better. lemme now what u guys think!!!
#6
RX-7 Bad Ass
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It is a neat idea, but it's so easy to remove the 4 bolts and swap back and forth that it's a moot point.
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#11
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Originally Posted by *RX007*
im not sure if this been talked about but i was wondering if there would be any benifits of having a mid pipe that splits into 2 pipes and then back into one again. one pipe being a strait pipe and the other w/ a hi flow cat. then where the 2 pipes split up there would be an exaust valve that controls the amount of exaust that goes through the strait pipe. i think this would be useful so u wouldnt have to unbolt ur mid pipe all the time to put a cat on it. with the flip of a swich u could run a hi flow cat or a strait pipe. ive included a ghetto drawing on paint so u guys can understand what i mean better. lemme now what u guys think!!!
Great minds think alike. You know this is the exact idea I had for my custom exhaust set-up also. I believe this will work really great because the exhaust always exits the rear, plus the cat will also lower the exhaust noise some when in use. You could get the best of both worlds with an exhaust like that. The only thing I was going to do different than your drawing was to use two 90 degree bends to and from the cat. The sharper bends will lower the noise more. Also if you go with the sharper bends to the cat, don't worry about the slight loss in power because obviously you have the strait pipe side to compensate.
Last edited by t-von; 01-23-06 at 10:13 PM.
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thanks t-von i was hoppeing i was up to something!!! well my drawing isnt really exact ya no? be it 45 degree bends or 90 it will serve the same purpose, and the noise level is exactly what i was getting at! i wouldnt have a problem swiching back to the stock cat to pass emissions but when ur just drivin around and u need/want 20-30 extra horses then y not?maybe i can try and get an exaust shop to produce one for me???
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This has been discussed before, one of the issues is that the valve to control the flow has to be able to withstand the really high exhaust temps of a rotary and the one you can buy off the shelf didn't hold up.
#19
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Originally Posted by Jedon
This has been discussed before, one of the issues is that the valve to control the flow has to be able to withstand the really high exhaust temps of a rotary and the one you can buy off the shelf didn't hold up.
Well Jedon some people just give up to easily. The simple solution is this.... the newer Electronic valves have a good heat rating. You can also have the valves heat ceramic coated. There are no excuses for this not to work.
Ok the next concern would probably be tuning. Simple! You tune the engine on the straight pipe side, then once the valve is close and the exhaust is diverted through the cat, the A/F ratio will automatically lower because of less flow and slightly more back pressure.
Last edited by t-von; 01-24-06 at 07:27 PM.
#23
Rotor Head Extreme
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Those cost a bit. I forgot the web page that had some for around $130.00. There are also some on ebay for cheap but, I'm not sure of the quality.
http://cgi.ebay.com/ebaymotors/Elect...spagenameZWDVW
http://cgi.ebay.com/ebaymotors/Elect...spagenameZWDVW