Tested my IEDs Saturday and Sunday,about 400 miles total,,,...07 FXDBI,Stage I air cleaner,SEII Slip Ons,V&H Fuel Pak...without going into specifics,I checked head,header,exhaust and oil temps...while I didnt see dramatic results,I would say I did see a 20-30 degree lower temp on average...engine runs smoother and the throttleseems a bit more responsive...the install took about 15 minutes while the bike was hot...only negatives are an intermittant slightly higher idle and a 4-5 MPG drop in gas mileage...plugs were slightly tan on top of the electrode,as opposed to chalk white before...overall,I am pleased and will leave the IEDs on the bike...may put the stock AC back on to see what that does...

 

Ordered the IED's today. I think we'll need to revisit the temps when it heats up in a few months. I don't think there's any major issues with these motors when it's only 70 degrees outside...

I have a concern about moving the IAT sensor. If you move it to a spot that reads cooler, there is no doubt it will richen up the mixture, but what about timing? Colder engines can stand more advance and I don't know if the ECM mapping not only richens the mixture, but also adds timing advance. If so, this could be a problem that only surfaces once it gets hot or during high load conditions... Anyone got a clue?

 

Heywood, I would say Rider57's results show that one can go below 14.1.

I guess the answer is that with both devices we are fooling the engine into thinking it is running at a higher AFR which results in the ECU adding more fuel to attain what it thinks is 14.7 which in Rider57's case is really 13.8 sniffed at the exhaust.

I would love to see pictures of how Rider57 installed the new IAT sensor in the air box.

 

Previous temp were 290 front and 310 rear.

 

Rider57 how is your bike setup presently? Exhaust, air kit, etc.??

Do you have a part number and cost for the IAT sensor? Also can you take any pictures to show where you located yours.

Thanks for all you've done.

Dave

 

I got the IAT off a wrecked 06 so it was cheap.($4.00) A call to your local stealer should tell you the price for a new one. I tried to take pics but even with a 12MP camera, it ws so dark and the reflection from the silver flooded much of the pic. I will try it in sunlight this coming weekend.
This bike has stock A/C, exhaust.

 

Here is a little food for thought.

Lets assume we play with the o2 bias and fool the motor to run14.2 when it thinks it is running 14.7. 14.7/14.2 = 1.035 or 3.5% more fuel in the closed loop section of the maps. But... the code has AFR built into the fueling calcs. At WOT the code has 12.5 as the targetAFR 14.7/12.5 so when you go open loop the code would normally add 17.6% more fuel (14.7/12.5 = 1.176) but here is the rub. The code will end up adding 17.6% to 14.2 and end up with an AFR of 12.07 or too fat for clean power. (14.2/1.176=12.07)

I think if you really want 14.2 at low power and 12.5 at WOT you still have to get to the AFR tables and set the WOTcells to a target of 12.95 or 13 as that is as close as you can get to 12.95 to get what is really 12.5

Bottom line is if you do this inline resistor trick, the entire map including, the top end will end up fatter than planed.... I think

AW

 

I'm no expert on fuel tables and all that stuff. I thought the whole idea was the IED's richened up the bike ONLY in closed loop mode and had zero effect in open loop.

 

Rider57, when you relocated the IAT sensor to your air kit, did the original stock wiring that ran to the original IAT reach your new location without having to cut and lengthen wires?

 

Ok, but where is my bust in logic? EFI programing and tuning is just logic.

AW