Suggestions for exaust?
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Joined: Apr 2009
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From: Santa Monica
My Ride: 2006 BMW 650i
hey guys im trying to get a new and lighter exhaust kit in my car but not sure whos good or whos bad.. any one have any suggestions? Does Rpi make exhaust for my car?
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Joined: Dec 2008
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From: Fort Lauderdale
Originally Posted by louiemC' post='902635' date='Jun 6 2009, 12:40 PM
hey guys im trying to get a new and lighter exhaust kit in my car but not sure whos good or whos bad.. any one have any suggestions? Does Rpi make exhaust for my car?
RPI had a first revision but they were unable to make any power gains. They said they don't have time to create a second version since they were working on the M3 stuff. Most exhaust don't gain power over the stock one.
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From: Fort Lauderdale
Originally Posted by tbal' post='902664' date='Jun 6 2009, 02:10 PM
I find it hard to believe that exhaust dont gain power over the stock... I have proof it does...
This is what RPI said not me. They are going to work on a version 2 design to try and gain performance.
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Joined: May 2006
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From: UK LONDON NW
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Originally Posted by tbal' post='902664' date='Jun 6 2009, 07:10 PM
I find it hard to believe that exhaust dont gain power over the stock... I have proof it does...
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Joined: Dec 2007
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From: Vancouver, BC
My Ride: See sig :)
Originally Posted by stone face' post='902771' date='Jun 6 2009, 01:37 PM
Your right tbal i had my car dynoed again and with the magnaflow i got 5 bhp over standard. i'm glad i hung in there and was patient with it.
All I know is, F#^$ dynos, f what companies claim. Im talking about real world results, which is what matters.
I raced a 335i, same driver, few different times. (Of course on a closed, race track) Results... well they speak for themselves..
Race 1: 335i vs 645ci (335i pulls a car length)
Race 2: 335i vs 645ci w/charcoal delete, kn dropinfilter (335i has 1/2 car on me)
Race 3: 335i vs 645ci w/charcoal delete, kn filter, resonators deleted, xpipe (dead even)
Race 4: 335i vs 645ci w/charcoal delete, kn filter, resonators deleted, xpipe, magnaflow exhaust AND 22" wheels (Dead even until about 140, than I start to pull) Without the 22s Im positive I can have a car length on the 335i.
That PROVES exhaust gained me some power. Everyones setup is different, I deleted all the resonators, added a xpipe in the right place, used small mufflers... So I could careless what people claim, because I know the exhaust benifited me.
Have a nice day
