Anyone know what results this may have? It's a an EX250. Please, no comments on environmental impact etc... it's a bike, not a hummer.
Anyone know what results this may have? It's a an EX250. Please, no comments on environmental impact etc... it's a bike, not a hummer.
"Faster, faster, faster, until the thrill of speed overcomes the fear of death" - Hunter S. Thompson
You'll need to get it retuned for the new non-cat exhaust that you will have created. I am sure that $50 will more than cover it on a modern bike as you have. You may also need to change the airfilter to one that will pass air at a more rapid rate (maybe not).
It will probably give you a couple more HP, depending upon the retune.
PHEW.....JUST MADE IT............................. UP"
I'm not after more power, just more noise! I'm used to riding quite a bit by sound on my old bike, especially down changes, and it's a bit tricky when you can barely hear it. Suppose removing the catalytic converter won't make a difference and leave me needing a re-jet?
"Faster, faster, faster, until the thrill of speed overcomes the fear of death" - Hunter S. Thompson
I'd think that the lack of back-pressure from the cat would change the engine tuning so you'd need to be careful about what happens mixture wise, worth checking at least...
It would be more simple on a bike with a carburetor.
Otherwise it can be an expensive proposition: in my case a full exhaust system, Arrow or Termignoni, a free flow airfilter, and a new chip for the ECU. Might have to get used to the cat.
The sound is OK, I just don't like the look of the thing. Or where it is.
On any injected bike the minimum outlay would be a PowerCommander and a custom map. There goes about a grand...
There is a grey blur, and a green blur. I try to stay on the grey one. - Joey Dunlop
"Faster, faster, faster, until the thrill of speed overcomes the fear of death" - Hunter S. Thompson
Google is your friend, this might help.
http://www.car-techie.com/converter.php
That article covers an EFI car engine not a carburetted bike engine.
EFI engines have the ability to (while running in closed loop mode during idling/cruising/light acceleration) adjust to changes in the intake/exhaust system, but these may still cause issues in open-loop operation (cold running and full throttle) if the maps no longer keep your engine as rich as they should...
Have just picked up on your thread from some months ago. Did you do anything about removing the converter? I have a single cyl Honda 250 with the same problem. It is a carb model, I dont want more grunt, just a nicer exhaust tone.
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