Surging Between 2000 and 3000rpm - Any advice........

[LBoltUK]

Hi all, just a quick question.

I've read a lot about the surging that occurs at low(ish) revs at low speeds.

I have a 2009 XB12Scg with a K&N, a Remus exhaust and a Remus Powerizer.

At highway speeds, in 4th and 5th (3000rpm + constant throttle) everything is fine.

At slower speeds (2nd gear etc) anything between 2000rpm and 3000rpm, on a constant throttle it bucks and surges.

Now, I've read various solutions, I've fitted the breather pipes (made no difference) made a new earth (helped with starting, but no difference with the surge), done a TPS reset and only run on decent fuel.

I did read somewhere that it could be slack in the primary chain, has anyone found this to be the case?

Is this surge a quirk of owning a Buell? Will I have to put up with it?

It does making riding through town very tedious and annoying.

Any help or advice would be greatly appreciated.

 

[Doc13]

Buy a ninja?


Honestly, just learn to avoid that rev range at that speed. Problem Solved. No work required. Less sweating, more beer drinking.

 

[Negative]

I used a solution posed by somebody a while back about taking the 20-40 TPS 8-bit x 2300-2900rpm range and richening it up by about 3% on the rear and about 10% on the front and it seemed to help out some... Just a suggestion... (don't forget to save your original maps and EEPROM before tuning anything)... =)

 

[LBoltUK]

Town riding at that speed is difficult to gear right it would seem, first gear is too high (well, seems so). Around here, where there's an awful lot of 20, 30 and 40 speed limits, it's difficult to avoid it.

Just wondered if anyone had found the definitive solution.

 

[LBoltUK]

Thanks Negative.

I guess I'd need to remove the Powerizer to do that?

How much do you think it helped out?