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pete roper said:Why? All it will do is upset the fuelling and make it run worse. The 8V motor is designed to run with a lot of restriction in the exhaust. Remove that and it'll run like a three legged donkey. The Cat is part of the whole equation AND it helps reduce emissions? Is there something wrong with that???
As long as people still try and apply 1950's tuning theory to a 2000 motor they will never get the results they desire or expect. Head design, combustion chamber design and very importantly valve head back-shape design also play a very important part in optimising the engines volumetric efficiency but nobody ever mentions them. Why?
pete
londonrob said:I've seen an ad on e bay from Sabre Engineering who are offering a De Cat service for the Stelvio.
Has anyone had it done?
If so whats your thoughts, any improvement?
Sure you could, but of the eight or so mufflers I've sold, we'll all keep enjoying the hell out of all of the benefits it offers.SUPERMOTO said:Does this mean we should all avoid all aftermarket exhausts like the GTX? I do agree that its very important to have the correct amount of back pressure in an exhaust system...
Which is exactly what I did (full kit) on mine, before it ever turned a wheel once in my possession.If I bought another new Stelvio I would have it done before I rode it!
londonrob said:Think I'll leave mine alone, at least for the warranty period.
crazylee said:Was that meant to be an insult? Please enlighten us all and tell us the difference between back pressure and resistance? I'd be interested to hear what you know about back pressure and the corrolation with valve overlap?
crazylee said:Was that meant to be an insult? Please enlighten us all and tell us the difference between back pressure and resistance? I'd be interested to hear what you know about back pressure and the corrolation with valve overlap?