Advancing timing on a TTS calibration

[Blackbaggr]

I also posted this in the "timing is everything" thread but fear it may go unseen...

Bike - 07 FLHTC 96"
Cams- 26h
Tuner- TTS
Exhaust- Supertrapp Supermeg
Air- SE

I'm running the PZ 176 file. TTS Mastertune has modified (advanced) the timing on the original calibration anywhere from 1.5 to 3 (approximate) throughout the file. I was wondering if anyone has a well tuned (dyno) TTS calibration for a similar build that has more advance and would be willing to post it. If not, would BOB or HERKO (or anybody for that matter) be willing to comment on whether or not I could advance 2 degrees across the board safely and whether or not this is advisable. Thanks in advance (no pun intended).

In the other thread I also posted the TTS timing tables that I am currently using.

[Sonny S.]

so, y'all gonna help a brutha out ?   

[05FLHTC]

The map he posted in the Timing is everything thread was hard to read, but it sure looked like he should be able to try & at least bump up the WOT numbers in the 2~5K range...at least try it see

[mayor]

In the other thread I also posted the TTS timing tables that I am currently using.

Front:


Rear:

[Sonny S.]

The map he posted in the Timing is everything thread was hard to read, but it sure looked like he should be able to try & at least bump up the WOT numbers in the 2~5K range...at least try it see

I agree, I actually think I would add 3* across the entire 90-100KPA range.....all rpm's.
Then at 80kpa & 6k rpm's.....a 2*.

Do a SOP run, and check for knock detection.

[Blackbaggr]

How 'bout at idle...I'm under the impression that that area is the cause of alot of the heat issues in these laster model bikes ? I guess its possible that Mastertune already addressed that though ...

[05FLHTC]

Bill,

What CR & CCP are you running?

Yes I prefer more idle timing, helps reduce heat & in general it also just seems to improve the idle stability IME.

[Blackbaggr]

Compression is less than stock...have to get back with you on the numbers. Where specifically might I make adjustments for my idle timing ?

[Blackbaggr]

Using the Bigboyz calculator...I think I have 8.77:1 /179.2 @ sea level

[05FLHTC]

Bill,

This attachment is just for a reference. This was a 2003 Road King EFI running high compression build 10.5/1 with SE 257 cams. So even these numbers you should be able to start with & most likely add some too, but I would go slow.

HTH,
05

2nd Edit addition I had them #'s wrong sorry, just for kicks, idle KPA vacuum on my 103 motor is about 38, cruise around 42  

[attachment removed after 60 days by system]

[05FLHTC]

Notice the idle timing was only 15 here, I like mine closer to 25 or more & then I blend it down...

[Blackbaggr]

Thanks 05 !


Anyone else ??

[mayor]

I'm mostly ignitionally challenged, and I'm not familiar with tts at all but here's what jumped out at me:

I agree, I actually think I would add 3* across the entire 90-100KPA range.....all rpm's.

Do a SOP run, and check for knock detection.

that is assuming that 90-100kPa can be reached at WOT?  can they? 

I also noticed that the rear is offset at heavier throttle in the upper rpms, why is that offset?  I wouldn't think that would be advisable without verifying that the rear needs offset on a measuring device (dyno)?

[Sonny S.]

I'm mostly ignitionally challenged, and I'm not familiar with tts at all but here's what jumped out at me:

I agree, I actually think I would add 3* across the entire 90-100KPA range.....all rpm's.

Do a SOP run, and check for knock detection.

that is assuming that 90-100kPa can be reached at WOT?  can they? 

I also noticed that the rear is offset at heavier throttle in the upper rpms, why is that offset?  I wouldn't think that would be advisable without verifying that the rear needs offset on a measuring device (dyno)?

100 kpa @ sea level

[Sonny S.]

BTW, rear offset is not a problem IMHO. TTS does'nt VTune in that range so AFR has to be preset ( am I correct ?)
either way, rear runs hotter and leaner typically, so less timing at WOT is safe.

[mayor]

does the TTS program allow the user to see what kPa ranges their engines are seeing at say idle, cruise and WOT? 

[Sonny S.]

It does while in VTune mode

[blkfalc4]

Either using Vtune or Datamaster while recording.

[DavePard]

Yes. datamaster displays it  both graphically and numerically. you can follow the timeline or select wherever you want to view in the timeline and zoom in to include whaterver area you want. there is an instruction manual for download on their website.