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Buell Forum » Old School Buell » Archive through August 09, 2011 » My solution to the IAT questions I have seen posted. « Previous Next »

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Nwrider
Posted on Saturday, July 23, 2011 - 05:48 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I saw that some people opted to run the IAT outside of the intake tube on a force or what not. I realize there wont be a huge difference in temp unless you run it right next to a head or something but... why not drill a hole and put it in the intake airstream where it was intended? I even mounted mine at 45 degree angle to keep it out of site.


iat



iat2


I picked up a Ford IAT sensor to check it out. They appear identical. Like from the same mold identical. When I get my bike back together I will run both and see if there is a difference.

The Napa P# is TS4039.

Cheers... now onto... exhaust? Yup!!
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01x1buell
Posted on Saturday, July 23, 2011 - 06:21 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

what did you do to keep it in there?
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Nwrider
Posted on Saturday, July 23, 2011 - 06:37 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

A pcv valve grommet.. ID to match the OD of the sensor and OD to match the id of the hole you drill. Auto parts places have them and even Home depot have similar styles for passing wiring into junction boxes.
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01x1buell
Posted on Saturday, July 23, 2011 - 06:47 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

thanks i like that setup i might try that
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Purpony
Posted on Saturday, July 23, 2011 - 10:48 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Thats exactly what i did to mine last week.
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Weatherbyman
Posted on Sunday, July 24, 2011 - 09:45 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

That is a cool solution, my solution to IAT was moving to an HSR-45 Mitkuni and dumping the DDFI altogether got rid of IAT, Head Temp Sensor, O2 and all the other code crap.... but yeah, good solution for IAT for sure in this intake... very cool
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Preybird1
Posted on Sunday, July 24, 2011 - 12:13 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Your going to have problems having that mounted in the elbow. I had the same set up and after i would ride the bike and got up operating temp and shut it off. The heat off the motor would super heat the air in the elbow as well as the elbow itself and the bike would have problems starting back up because the air in the elbow was really hot. Sorry but i tried that and had to move the sensor into a forcewinder air filter. Depending at what sea level you live at this may not be a problem for your bike. But mine was a pain to start after i shut it down. Im at 8500 feet.
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Weatherbyman
Posted on Sunday, July 24, 2011 - 12:45 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

damn good point preybird.... now it makes sense why i had so may issues... my previous engine builder also relocated the IAT there when the bike was still a 1203 and it never did run right and hard as crap to restart after a hard run. I agree... potential issues with relocation of the IAT there for sure from experience.... still happy i dumped the DDFI for the Mitkuni 45 but yeah, you could have issues with the IAT in that location.. makes sense now why after that mod the bike was hard as hell to start after a hot run.
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Buellistic
Posted on Sunday, July 24, 2011 - 03:48 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

If the IAT is placed a specific distance from from the throttle butterfly there must be a good reason ???

If the IAT is placed as far as possible from the engine heat there must be a good reason ???

(Message edited by buellistic on July 24, 2011)
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Nwrider
Posted on Sunday, July 24, 2011 - 05:29 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

My bike had an econowinder on it when I bought it. The IAT was pretty close to the same location. Started up and ran fine with that set up. If I have hard start problems at temp I will know where to look. Thanks.
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Nwrider
Posted on Sunday, July 24, 2011 - 08:11 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Purpony... have you had any problems with that location?
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Purpony
Posted on Sunday, July 24, 2011 - 09:30 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

havnt started my bike yet. Waiting for my oil cooler lines to show up so i can fill my bike with oil first : ) Ill report back if i do though.
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01x1buell
Posted on Sunday, July 24, 2011 - 09:32 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

mt intake tube does get pretty damn hot but how much of a differnce is it between therer and the filter???
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Preybird1
Posted on Sunday, July 24, 2011 - 11:16 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

my intake elbow has gotten hot enough to burn skin and that is just with sunlight! I ended up putting tape over the hole and sliding the air filter down farther to cover the hole. I wish i had a thermo hawk laser thermometer to point and click the temp it gets to after a ride. I didn't have this problem with the econo winder and i think it is due to the plastic not carrying\absorbing heat like aluminum does.
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Nwrider
Posted on Monday, July 25, 2011 - 12:52 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I went for little test ride this evening. I installed a force intake and a hawk muffler. First ride I rode on my stock un-tuned ecm. Little boggy off the line but other than than ran pretty good. I stopped while it was hot, gave all the bolts a visual and started it up. It was hot outside and the intake tube was quite hot to the touch. It fired right up with no problems. Rode home and repeated. Again started with no problem.

Then I installed the race ecm. Fired right up but idled high. After a short ride I headed home cuz it ran like SHIZAH! I have not looked at it with ECMspy yet. I am sure it needs some love which it will get later this week.

Regardless... IAT location did not seem to be an issue.
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Jramsey
Posted on Monday, July 25, 2011 - 07:12 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

"Then I installed the race ecm. Fired right up but idled high. After a short ride I headed home cuz it ran like SHIZAH!"

After swapping ecm a TPS reset is required before start up,2nd one recommended after its up to running temp.
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01x1buell
Posted on Monday, July 25, 2011 - 12:36 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

i just put my iat back in the forcewinder filter like it was originally and now my afv is 100 perfect i rode for 2 hours and checked it multiple times and 100 at every stop. so i guess i am just going to keep it there. it does not look the best bu tthe bike runs so much better with it there.
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Nwrider
Posted on Monday, July 25, 2011 - 11:18 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Thanks Jramsey... I just got anxious. I was surprised how well it ran on the stock ecm. Happy it will only get better : )
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