I'm an old hand at bikes but a bit of a newbie in BusaLand here as I just got mine last week so forgive me if this has already been covered or is in the wrong forum but just something I wanted to offer/share here.
It has come to my attention through one of my many learned cohorts that the Busa's IAT (Intake Air Temperature) Sensor is somewhat poorly located as stock whereby in it's stock location is inserted in the underside of the airboxes left side and is located but an inch or so directly above the rear portion of the engines valve cover....
The Claim???....when caught in high heat summertime traffic jams the fairing keeps the heat entrapped on the now not moving bike and the IAT Sensors metal base (which is located in a very hot spot near the engines valve cover) begins to get saturated with heat rising from the valve cover and the IAT Sensor begins giving the ECU "Irroneousely High Temperature Reports"...and in turn???...the ECU begins compensating the fuel map to accomodate the irroneous high temps...."LEANER"...which causes the engine to run even HOTTER yet...in a viscouse circle until....your temp gauge says..."Pull Over".
The IAT Sensor Relocation Mod "Jinksters Way"
1st???...Identifying The IAT Sensor Location...(aka..."The Culprit")
To remove the IAT Sensor simply depress the locking tab to unplug the connector and spin it out with a 19mm open end wrench.
Next???...I found that with a considerable amount of insertion pressure that a 27/64ths auto panel fastener fits and plugs the 12mm x 1.50 threaded hole in the airbox just dandy (good luck finding a 12mm x 1.50 bolt) and a 7/16ths ID Rubber Grommet is just the ticket to hold the the IAT Sensor in it's new found home....read on....
Next???...install a 9/16ths hole for your 7/16ths ID rubber grommet in the top of the left ram air duct just behind your left directional...this location gets the IAT Sensor away from the direct engine heat and out in front of the engines radiator in a much more reasonable location for truer reporting of actual intake air temps.
After you clean up the burrs around the freshly drilled hole???....put a little armour-all or silicone spray on your rubber grommet and insert it in the newly drill location.
Now???...You'll actually hafta carefully spin your IAT Sensor through the rubber grommet and when it clears the threads???...you'll actually "FEEL" the sensor pop into place as the rubber grommet seats into the senosors thread relief...with the sensor rubber mounted and very secure in it's new and far better home.
Now we're gonna hop around a bit here and plug the airbox hole the sensor came out of....and using a gas/oil resitant silicon sealant squeeze a generous bead around the underside of the fasterners head/flange like so....
Then simply but firmly push it up and into the same hole the IAT Sensor came out of then wipe away the excess silcon sealant and viola...the airbox is plugged.
Next use black electrical tape and just wrap up a 2 wire mini harness using about 30"s of both 20ga Green and 20Ga Black stranded wire then strip the ends and connect the proper colors to the proper colors and route like so...
Then hook up and tape up the other end using the stock IAT Sensors Plug then plug'er in!!!...
Then???...starter up...warmer up...adjust the idle...then button'er up and Viola!!!...Your IAT Sensor is happily relocated and the next time you and your busa are stuck in a hot traffic jam???....You can smile with confidence at the hours time and $10 spent...Relocating Your IAT Sensor.
L8R, Bill.
<!--EDIT|JINKSTER
Reason for Edit: None given...|1111547092 -->
It has come to my attention through one of my many learned cohorts that the Busa's IAT (Intake Air Temperature) Sensor is somewhat poorly located as stock whereby in it's stock location is inserted in the underside of the airboxes left side and is located but an inch or so directly above the rear portion of the engines valve cover....
The Claim???....when caught in high heat summertime traffic jams the fairing keeps the heat entrapped on the now not moving bike and the IAT Sensors metal base (which is located in a very hot spot near the engines valve cover) begins to get saturated with heat rising from the valve cover and the IAT Sensor begins giving the ECU "Irroneousely High Temperature Reports"...and in turn???...the ECU begins compensating the fuel map to accomodate the irroneous high temps...."LEANER"...which causes the engine to run even HOTTER yet...in a viscouse circle until....your temp gauge says..."Pull Over".
The IAT Sensor Relocation Mod "Jinksters Way"
1st???...Identifying The IAT Sensor Location...(aka..."The Culprit")
To remove the IAT Sensor simply depress the locking tab to unplug the connector and spin it out with a 19mm open end wrench.
Next???...I found that with a considerable amount of insertion pressure that a 27/64ths auto panel fastener fits and plugs the 12mm x 1.50 threaded hole in the airbox just dandy (good luck finding a 12mm x 1.50 bolt) and a 7/16ths ID Rubber Grommet is just the ticket to hold the the IAT Sensor in it's new found home....read on....
Next???...install a 9/16ths hole for your 7/16ths ID rubber grommet in the top of the left ram air duct just behind your left directional...this location gets the IAT Sensor away from the direct engine heat and out in front of the engines radiator in a much more reasonable location for truer reporting of actual intake air temps.
After you clean up the burrs around the freshly drilled hole???....put a little armour-all or silicone spray on your rubber grommet and insert it in the newly drill location.
Now???...You'll actually hafta carefully spin your IAT Sensor through the rubber grommet and when it clears the threads???...you'll actually "FEEL" the sensor pop into place as the rubber grommet seats into the senosors thread relief...with the sensor rubber mounted and very secure in it's new and far better home.
Now we're gonna hop around a bit here and plug the airbox hole the sensor came out of....and using a gas/oil resitant silicon sealant squeeze a generous bead around the underside of the fasterners head/flange like so....
Then simply but firmly push it up and into the same hole the IAT Sensor came out of then wipe away the excess silcon sealant and viola...the airbox is plugged.
Next use black electrical tape and just wrap up a 2 wire mini harness using about 30"s of both 20ga Green and 20Ga Black stranded wire then strip the ends and connect the proper colors to the proper colors and route like so...
Then hook up and tape up the other end using the stock IAT Sensors Plug then plug'er in!!!...
Then???...starter up...warmer up...adjust the idle...then button'er up and Viola!!!...Your IAT Sensor is happily relocated and the next time you and your busa are stuck in a hot traffic jam???....You can smile with confidence at the hours time and $10 spent...Relocating Your IAT Sensor.
L8R, Bill.
<!--EDIT|JINKSTER
Reason for Edit: None given...|1111547092 -->