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Montesa 4rt mapping switch

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I fitted a mapping switch to my 2016 repsol and when I switch to the mode 2 map it feels like if you have water in the carb (if it had one) you open the throttle up and the engine stutters.

20160316_121249.JPG

Do you have the dual map throttle body fitted to the bike? What does the part number say on the throttle number?

It could be that the mode 2 map isn't setup right

Edited by teddybattye
spelling

4 hours ago, chatlie44 said:

I fitted a mapping switch to my 2016 repsol ...

Is your Repsol a 2ED (street legal) or 4ED (racing) model?

  • Author
On 30/09/2017 at 2:15 PM, sportsawyer said:

Is your Repsol a 2ED (street legal) or 4ED (racing) model?

Not sure how do i find out?

21 minutes ago, chatlie44 said:

Not sure how do i find out?

Take the rear mudguard off and look on top of the throttle body.

  • Author
34 minutes ago, sando994 said:

Take the rear mudguard off and look on top of the throttle body.

ok thanks i will look

If the TB/ECU has P.N. 16400-NN4-L11, then it's a 2ED.

If the TB/ECU has P.N. 16400-NN4-L31, then it's a 4ED.

The L11 TB/ECU map 2 is tuned to work with the O2 sensor, catalytic converter, exhaust restriction, and intake restriction. The 2ED model doesn't come with a map switch, and uses a jumper in the headlight connector to put the bike in map 2 for all the engine restriction. If your bike didn't come with the map switch, I suspect you have the 2ED model, but check the TB/ECU number to confirm whether or not you have the 2ED TB/ECU.

If you've put the race kit parts parts on your bike, but still have the L11 TB/ECU, I'd expect it'd run poorly (as you are seeing) in map 2.

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