Problem: - The standard Tiger 1050 has a twin inlet pipe entering the Airbox with the R/H end banked off. The one hole on
the lefthand side is 40mm, this is feeding 3 x 46mm throttle bodies! Even worse, this one 40mm hole is tucked up
against a frame member. So when you whack the throttle open at low speeds asphyxiation takes over. My old Africa Twin
was much the same. However because Big Traillie's have the same aerodynamics as a Basking Shark, at speed you get
a Ram effect. Therefore my guess is that the Airbox entry can be made small and inefficient to meet stringent noise
regulations. I have read that the 1050 Speed Triple uses both inlets and it makes more power than the Tiger.
the lefthand side is 40mm, this is feeding 3 x 46mm throttle bodies! Even worse, this one 40mm hole is tucked up
against a frame member. So when you whack the throttle open at low speeds asphyxiation takes over. My old Africa Twin
was much the same. However because Big Traillie's have the same aerodynamics as a Basking Shark, at speed you get
a Ram effect. Therefore my guess is that the Airbox entry can be made small and inefficient to meet stringent noise
regulations. I have read that the 1050 Speed Triple uses both inlets and it makes more power than the Tiger.
Tiger 1050 Airbox Tuning
| Step 2: - Fit a K&N Airfilter. I fitted the K&N to the standard Airbox together with the Remus exhaust and Triumph Off Road tune. To be honest I don't think the K&N makes much difference on it's own. However with a modified Airbox I am confident that the K&N provides a worthwhile performance gain. |
| Step 1: - Remove the Tank and airbox lid . Then remove the rubber Airbox entry pipe and cut out the modelling knife (See picture on right). Refit the pipe and reassemble the Airbox. |
Do the modifications work? After the modifications when you run the Tiger at a standstill and blip the throttle the engine
revs more freely. On the road here should be more induction noise but I can't say I have noticed. The Air Mass sensor,
Lambda probe and ECU (With Triumph Off Road Tune installed) all combine to ensure the modified engine continues to
run sweetly.
I ride 150 miles a day to work so I have good terms of reference. With the Airbox modified the Tiger picks up quicker from
say 40-50mph behind a car in 6th gear. Initial acceleration is noticeably more eager. My Tiger will immediately pull 30 feet
or 10 metres ahead of a standard bike. All the gain is in the first few seconds after that there is no discernible difference to
the red line. I am pleased with these modifications so far.
revs more freely. On the road here should be more induction noise but I can't say I have noticed. The Air Mass sensor,
Lambda probe and ECU (With Triumph Off Road Tune installed) all combine to ensure the modified engine continues to
run sweetly.
I ride 150 miles a day to work so I have good terms of reference. With the Airbox modified the Tiger picks up quicker from
say 40-50mph behind a car in 6th gear. Initial acceleration is noticeably more eager. My Tiger will immediately pull 30 feet
or 10 metres ahead of a standard bike. All the gain is in the first few seconds after that there is no discernible difference to
the red line. I am pleased with these modifications so far.
| Step 3: - Cut the mid section out of the entry pipe. When I performed the 18,000 mile service I decided to cut out the mid section of the airbox entry pipe. (See the photo on the left). The Tiger feels friskier and runs well. I also fitted new NGK Iridium plugs and cleaned the K&N Airfilter. |
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