Triumph Forum: Triumph Rat Motorcycle Forums - View Single Post - LT MAP Tubes and flat spot issue.
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post #2 of (permalink) Old 04-10-2019, 01:16 PM
jaknife
Grand Prix 125
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Join Date: Aug 2018
Posts: 29
I can't help with the problem you describe but I don't believe it's related to MAP tubes. At the speeds you mentioned the engine will be turning ~3000 rpm. From my experience on my 2010, leaking tubes cause problems at idle and poor throttle response below 2500 rpm.
You can see a drawing that shows the MAP tubes on bikebandit.com. Each tube consists of 5 pieces, 3 rubber connections and 2 hard plastic tubes. Do yourself a favor and get rid of the stock Triumph tubes and replace with single piece flexible tubing and tube clamps at each end.
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