Triumphrat

Scrambler900 · 12-11-2012, 09:13 PM

My 2010 Thruxton has the British Customs' stage 1 kit (Predator exhausts, AI removed, air box removed, K&N air filters installed, and ignition remapped). The end result, for around $1000 parts and labor, is what the Thruxton should be like as new. A huge improvement over stock.

If I had gone with the Arrow system instead, the cost would have been around $600 more, with little additional weight savings and zero net performance gains over the Predator system (according to my dealer and Triumph mechanic). Also, there is a cosmetic difference as the Arrow is a brushed, flat metal finish, while the Predators have first-class chrome plating.

There is also a sound difference, as I have ridden Bonnevilles with both exhausts, and I prefer the sound of the Predators - more throaty sounding in my opinion.

Also, in order to get the most flow and sound out of the Arrow system, there is a baffle that you have to remove.

Scrambler900 · 12-11-2012, 09:20 PM

From my earlier post a year or so ago:

My local (and outstanding) Triumph dealer - Ray Price Triumph in Raleigh, North Carolina - gave a great demonstration at last night's RAT meeting. They took a totally stock 2010 EFI Bonneville T100 that is currently used as a demo bike, and ran a base line dyno test. The stock T100 showed 44.76 ft. lbs. of torque, and 55.60 horse power.

Then the mechanics added British Customs' "EFI Basic Performance Package" for the Bonneville,Thruxton and Scrambler, which consists of free flowing Predator twin stainless exhaust slip-ons, the air box removal kit and the new K&N dual air filters, and the air injection removal kit, and did a basic EFI remapping that is similar to what they'd use for the Arrow 2 into 2 system. Retail price for the British Customs parts is $770 U.S. There is a very noticeable weight savings when replacing the fully baffled stock exhausts, air injection kit and very heavy air box, yet the appearance of the T100 is the same.

The T100 then went back to the dyno a second time, and yielded 49.97 ft. lbs. of torque, and 64.16 horse power. That was a huge improvement. Next, the mechanics added a more aggressive "stage 1" cam kit, and a required Power Commander hardware and remapping. The third dyno result showed 53.24 ft. lbs. of torque, and 70.89 horse power. Quite a difference in measured torque and hp, and sound.

Today I had a chance to ride the T100 "beast", and it was totally different from my still stock 2010 EFI Thruxton. This hot rod demo T100 is unlike any new "classic" Triumph I've ridden, and it is quite a performer.

In conclusion, the T100 dyno results showed the following:

Torque: 44.76 ft. lbs (stock); 49.97 ft. lbs. (EFI Basic Performance Package added); 53.24 ft. lbs. (with the stage 1 cams added)
Horse power: 55.60 hp (stock); 64.16 hp (EFI Basic Performance Package added); 70.89 hp (with the stage 1 cams added)