Triumph Forum: Triumph Rat Motorcycle Forums - View Single Post - WTB: Thunderbird catalytic converter (or swap for gutted)
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post #4 of (permalink) Old 08-21-2011, 05:08 PM
Formula Extreme
Senior Member
Join Date: Aug 2011
Location: pine grove, PA
Posts: 442
Depending on how it was gutted That alone could be your problem with the backfireing. I would doubt that they have a factory tune for any T-bird with the cat gutted like an empty box (creating wierd exhaust flow)

I would make a real crossover pipe and remove the cat altogether or replace it with new and would be willing to bet the backfire would go away.

I just got my new Thunderbird yesterday and only on hard deacceration does it give any hint of a noise that could be confused with a backfire!(note I said could be confused not is a backfire)

It has factory installed big bore, short tors, the upgrade filter and programming I really cant see any reason to mess with the tune it has The bike is a pleasure to ride and always very responsive no matter what I'm doing.
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