autoTune install

[Red Barron]

Originally Posted by SauceSquatch

MPG is pretty much exactly the same. I was actually about to call up Dyno Jet tech to see if there are suggestions to get better MPG.

Obviously I can't speak for either person but I would suggest soliciting some assistance from Tahoeacr or Cyborg. I am going from memory but they did extensive work with their 990 EFI systems. You might want to read through the thread or seek assistance with an AFR table. I would trust their direct knowledge before I would trust the generic knowledge from Dyno Jet.

You are leaving good mileage on the table (or should I say off the table. pun intended) with a straight 13.2. That is rich for even an air cooled Harley at crusing speeds.

[mousitsas]

Originally Posted by SauceSquatch

MPG is pretty much exactly the same. I was actually about to call up Dyno Jet tech to see if there are suggestions to get better MPG.

What is your cruising engine speed?
You may try to use AFR=14.7 for small throttle openings (TPS = up to 20%), moderate engine speeds (3 - 5k) and top three gears. Leave everything else at 13.2

[tahoeacr]

Originally Posted by mousitsas

what is your cruising engine speed?
You may try to use afr=14.7 for small throttle openings (tps = up to 20%), moderate engine speeds (3 - 5k) and top three gears. Leave everything else at 13.2

+1

[SauceSquatch]

Originally Posted by mousitsas

What is your cruising engine speed?
You may try to use AFR=14.7 for small throttle openings (TPS = up to 20%), moderate engine speeds (3 - 5k) and top three gears. Leave everything else at 13.2

I usually cruise at 65-75.

Thanks for the advice I'll have to do some digging on that see if I can find the threads, I'm really just learning on EFI's. I'll give it a shot though, I love the way it's running but the gas usage is pitiful. My Road King used to get at least 45 MPG

[SauceSquatch]

Finally getting around to doing this... does this AFI mapping look correct?

I don't know much but that seems like a large difference between the two numbers, shouldn't I tapper the numbers gradually up to 14.7 and then down to the 13.2?

[mousitsas]

It looks just fine to me. The software smooths out by interpolation the values between the transitional rpm, so you probably don't have to do it by yourself. But if you notice sudden steps while you ride, then by all means do so! Two or three comments, Firstly, I think autotune suggests to not touch the 0% throttle. Also, maybe it is better to apply these changes only to the top three gears. Finally, have you established that the fuel map converges?

Originally Posted by SauceSquatch

Finally getting around to doing this... does this AFI mapping look correct?

I don't know much but that seems like a large difference between the two numbers, shouldn't I tapper the numbers gradually up to 14.7 and then down to the 13.2?

[SauceSquatch]

You are right, 0% throttle should be left alone, good catch.

I guess I don't understand the software because I'm not sure how to specify for only the top gears. Can't seem to specify individually, I'll call DynoJet support.

On the phone with DynoJet support last time they assured me that the fuel map converges despite being labeled "Cylinder 1".

Thanks for your input!

[Deviant666]

Originally Posted by mousitsas

It looks just fine to me. The software smooths out by interpolation the values between the transitional rpm, so you probably don't have to do it by yourself. But if you notice sudden steps while you ride, then by all means do so! Two or three comments, Firstly, I think autotune suggests to not touch the 0% throttle. Also, maybe it is better to apply these changes only to the top three gears. Finally, have you established that the fuel map converges?

Sometimes I feel so lucky to have this bastard on my side...I'm about to do the same install with PCV and autotune so please don't over boost his confidence for he becomes a greedy soab...