Airbox Seam Vacuum Leak

[TigerShark]

Discovered this today and sealed the factory center seam where it wraps around the rear of the airbox on the downstream side of the air filter.

I would not have discovered this vacuum leak were it not for the slight accumulation of oily residue along that seam, residue made possible by the Uni Foam Filter Oil which I use.

My fix was to clean it well and apply Permatex 'The Right Stuff', filling in the outside of that seam.

The results? My 121,600 mile '06 Tiger with map 10173 and TOR exhaust has never run so well as the 50 miles I put on it this evening. The surging and inconsistent idle that have been present to some degree since I bought the bike in 2021 with 25,007 miles, are now gone.

In the past, I had successfully sealed the ECU line elbow to the leak-prone airbox grommet at the right rear, and I had double-stacked the IACV gaskets (with Hylomar Blue between) to seal up tight to the airbox (use a bright light from under the airbox while observing through the airbox slot).

Hope this tip about sealing that factory center seam on the airbox helps someone.

[Lee337]

Can't say I've had that problem with my 68k mile 06 Tiger, but then I've never looked too closely at the airbox either.

I too have an aftermarket can (Blueflame) with an updated map and she revs fine & idles steady. I would take a look next time I'm in the garage, but I sold her so she's off to pastures new on Friday.