Cooper S Sportex exhaust review at last!
I needed a new exhaust but could'nt stretch to a Miltech and did'nt like the look of the cheaper stainless sytems found on ebay, and they appeared to be quite loud.
After much searching this forum for a review with no luck, I managed to contact a few folk who bought them and heres what they said.
1)It fitted easily but mentioned he had to get some brackets for it. The exhaust looked good and it wasn't really loud, it gave a slight roar when you turned on the engine but the sound wasn't overpowering. It was similar sounding to the previous exhaust. I was really pleased with it. Price wise the mechanic couldn't even find a basic exhaust at such a good price.
2)Found system fitted OK!has a nice sound around 4000rpm not to loud I would recommend!!
3)I am happy with the exhaust-straightforward to fit and isnt any louder than the standard system it replaced.I cant say I have noticed any improvement in performance but I wasnt looking for any, just a reasonably priced replacement for the standard one
4)I would highly recomend it, the mechanic said it fitted like a dream. It is a little noisier but not overly so. I actually bought it as a replacement and it was much cheaper than the an original mini one.
So with that I ordered one myself......and heres my review. The system itself is very well made, good welds and strong supports around the silencer boxes. When it came to fitting we had a bit of a harder time. You need to buy some clamps from a motor factors, and also some bolts as the standard has studs to fasten through the cat, not really a problem. We had to leave off the inboard hangers as we could'nt get them to fit, perhaps with a bit of modification they might have gone in, but we thought it would be ok just on the outers.
The sound itself is a tad louder than standard with a nice little rasp when you rev it. I would say throttle respose was slightly better as you would expect from a sports system but nothing massive. Nice large twin rolled round stainless trims.
The only thing I would say is the pipe diameter they use is on the small size, which may be restrictive to higher tuned mini's, but without dyno testing its just a guess. For the ones who like numbers here are the pipe sizes.
Standard BMW pipe diameter is - 2 1/4" cat back to silencer, 2 1/2" link pipe to the other silencer, then two 1 3/4" tailpipe outlets.
Sportex pipe diameter is - 2" cat back to Y joint. Y joint outlet through silencers to trims 1 3/4".
The use of the Y joint does effectively split the exhaust gasses into two 1 3/4" pipes rather than on the original system it all goes through one pipe until the exit of the last box. I personally think it would be benefical going up a 1/4" on all pipe diameters on the Sportex. However I'm sure they've done there research and development program and found the current system optimal between power gains and noise levels.
So my conclusion would be - if your looking for a repacement exhaust or a budget sports system thats not too loud and you don't mind if its not stainless, go for the Sportex. If your looking for maximum BHP for a highly tuned mini and a good rort to wake the neighbours maybe consider something else.
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