Injector timing

[Hilly13]

 

[Admiral Akbar]

No. The O2 sampling rate is changed,,,slowed down a little,,,,everywhere. This was an unusual build, and the bike owner had also modified the D & D exhaust. The TMax engineer and I were just talking and throwing around ideas and decided to give this a try. We built two maps a 360 and a 400, the 400 with slightly slower sampling done the trick. I might add the guys at ThunderHeart were a pleasure to work with. As we all know, every issue can not be fixed with a tune or tuning product, but those guys work hard to make it is right as they can. There is a tech meeting every morning where all the problem issues are looked at, data logs reviewed by techs, and by an engineer. Its really a slick operation. Tech support was moved in house at ThunderHeart only a short time back.

Interesting.. I asked Dan a little over a year ago if the O2 sampling was synchronized to the exhaust stroke.. Seems like it should be. He never got back to me.. Seems to me that slowing the sampling shouldn't make much difference. Synchronizing might be more important.. They may have changed the rate in some manner that sampling at the wrong time occurred less..

Either way.. I was just playing with the EGC and the new Smartlink requires updated Firmware which may include a different sample rate?

Max

[Admiral Akbar]

Either way.. I was just playing with the EGC and the new Smartlink requires updated Firmware which may include a different sample rate?

Max

For some reason both bikes had outdated firmware..    Not sure why as I usually check firmware revision every time the SW get updated.. It might have been due to it not being needed but this time it said it was..

Max

[Eleft36]

tmax has a injector timing feature now. is that related to all this conversation?

Way cool.. They did it for smartlinkIV..

where do I find that in the software?  I updated my software last night, but don't see that any where.   

Basic Settings, it's not covered in the manual. Don't know how the #s are figured. This map 876 differs from 865, 392 vs 400.  392 has the header glowing and pipes carbon-ed up 400 doesn't do either..?? Intake noise louder @ 392 also..??
Al

Yes on the 400 setting; Last Sunday's ride(220mi) mileage was better @ 41. Lot's of offsets both ways.
Al

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[Eleft36]

tmax has a injector timing feature now. is that related to all this conversation?

I've got maps both before and after Dan's modifications..

The original shows 400 deg and the new map shows 364 on both maps.. Almost all the way to the other end of the setting..

Al,
One thing you might want to do when changing the injector timing is readjust the ignition timing some and back off the the AFR.. Sounds like the motor might be a little retarded (glowing red pipe) and it's showing up when you change the injector timing... You can also pull fuel and pick up on mileage.

FWIW I didn't see any difference in the exhaust color going from 400 to 364 but I've been able to lean out the maps at partial throttle and squeeze some more mileage out of the EGC.. My 02 RKC I've not done much cept ride it.. It runs better.

I'm guessing but suspect it number is injector pulse timing in degrees from TDC compression stroke or possibly the ignition event..

Max

Bruce,
I changed from 865 to 876 because the fuel curve is farther out and the timing is ahead. Let’s say it looks better.
  I left the 876 and changed injector timing back to the 865 setting of 400 and it seems fine. Not many miles on the 876 map, I only put 20 on @ 392 timing; right thigh really felt the heat quickly. 876 map seems to use a lighter throttle it idles good no ping or pops and I added some pulse fuel to start quicker. Mufflers sound lower pitched. Exhaust is from a CVO Softail Convertible and still has cats, quiet enough to hear the intake.
The 865 mileage was a constant 39+ and ran descent, with the ign timing and slightly leaner afr I’m expecting a little better from map 876.

Al

Way cool.. They did it for smartlinkIV..

where do I find that in the software?  I updated my software last night, but don't see that any where.   

Basic Settings, it's not covered in the manual. Don't know how the #s are figured. This map 876 differs from 865, 392 vs 400.  392 has the header glowing and pipes carbon-ed up 400 doesn't do either..?? Intake noise louder @ 392 also..??
Al

Yes on the 400 setting; Last Sunday's ride(220mi) mileage was better @ 41. Lot's of offsets both ways.
Al

[Sonny S.]

What cams ?

[Eleft36]

What cams ?

103" SE BB, Andrews 26H's, 2010 CVO 110" mufflers with cats & head pipes , K&N filter.

Al

[Sonny S.]

Ok in 95" motors TW 26's use 400 injector timing.
I don't have access to maps right now but is it different in 103's ?

[Admiral Akbar]

Yes on the 400 setting; Last Sunday's ride(220mi) mileage was better @ 41. Lot's of offsets both ways.
Al

So what did you change?

Max

[Eleft36]

Yes on the 400 setting; Last Sunday's ride(220mi) mileage was better @ 41. Lot's of offsets both ways.
Al

So what did you change?
Max

From 865 map to 876; Injector timing from 392 to 400; The start fuel pulse and upped the idle one notch, then checked and auto mapped after a 220 mile non highway ride. Sunday 6 2 13 another ride(230 miles)non highway ride, fuel mileage @ 41.7. Software said no auto map required. 
Idles, starts and runs good, no pinging, popping or surging. 
Al
Sunday 6 2 13 GPS Track attached:


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[Eleft36]

My current map, saved 6 02 13

Al

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[Admiral Akbar]

Looks good but you need to open the throttle more than 50 deg occasionally..    Give the map some miles..

Max

[Eleft36]

Looks good but you need to open the throttle more than 50 deg occasionally..    Give the map some miles..

Max

It's improving, 530 miles since I checked the offsets last. Sundays ride 297 miles(track jpeg. attached)topped off at start then topped off @ 174(3.93gals) trip stats show 40 mi avg. for moving time of 7:28 hrs. total trip 11:03 hrs. top speed of 73 .
And 2 up, mostly rural roads.
Al   

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