08-07-2013, 08:35 AM
(08-07-2013, 08:02 AM)Waffa_imp Wrote:(08-07-2013, 07:28 AM)The ferret_imp Wrote: Ok all you really smart guys..what does this thing supposed to do to/ for our bikes in laymans language.
It is supposed to prevent the ECU from making changes to the air/fuel mixture while in closed loop operation. Should make for a smooth ride when you start rolling on the throttle, less jerkyness. Will probably add some HP because the bike will run closer to stoichiometric as opposed the higher ratio that emissions prefers.
Downside: Will probably wear out the cat faster. And my guess is less power at higher altitudes.
You are making a bunch of assumptions. Unless one has access to a graph of their bike's A/F ratio at all throttle openings, this device isn't really useful, IMO. What resistance is it set for? Full throttle operation at 1 bar? The ECU is constantly making changes to the A/F ratio across the rev range to smooth out harshness, compensate for the quality of the gasoline one is currently running, and whatever else the engineers found during testing. To shackle the computer like this will likely result in degraded performance.
I agree with the poster that mentioned this is an old-school method applied to modern hardware.
An additional aside, my bike doesn't exhibit any jerkiness. The throttle response is smooth and linear from idle to redline.