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- Fuelling and Intake ( https://www.xt660.com/forumdisplay.php?f=207)

- - Fuelling mods - Nitro-X and Kev mod ( https://www.xt660.com/showthread.php?t=19649)

Maybe I should put my dB killers back in.

Quote:

Originally Posted by Xia Kun (Post 186117)

Checked the ECU, it's 5VK-8591-01.

Took it out Yesterday, with CO up 8 places & AIS done. Seems to be better. Have increased the CO up another 2 to make that 10 in total. Any limits on that increase? Still getting a lot of back fire. But that doesn't really! worry me too much. It's more the fuel delivery.
Will get back on how this runs again.

A 01 ECU would have been changed under warranty.

Ok, so I took it back out this afternoon. Put the fuel back down to eight o'clock. Big improvement. Stopped, put the fuel back up to 9pm, this seems to have settle things down even more. The surging has reduced by about 80-90%, I can now happily run along in 4th at 50km and have no issues.
So, the setup is as follows:
*Kevs fuel mod at 9pm
*CO increased by 10 points
*AIS blocked
*Stage 1&2 Filter
*large triangle holes cut in filter box & snorkel removed
*Some nice scorched titanium mufflers from www.spengineering.co.uk

This is about all the performance mods I will do on this older bike. But at this stage it has made a huge difference to how it rides compared to first time I jumped on it.
Hopefully this ridiculously long dry spell continues a little longerðŸ˜„
****** the cows