TTS MasterTune AFR - Tuners comments wanted

[Scramjet]

OK, I have completed numerous tuning runs with the TTS and now think the VE's are about right.  I have reset the fuel table, PE fuel table, warm up enrichment, active knock retard and enabled knock control.  It is already running better then ever.  I am now playing with the AFR table for good cruise fuel economy and maximum WOT peformance.

QUESTION TO TUNERS:  What do you think of the AFR table below.  Looking for some constructive comments...


PS:  Subtract .2 from the AFR to correct for the CLB table offset of 778.

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[whittlebeast]

Would you considder sending me an o2 enabled data log.  I would love to see it.  PM me for an email address to send it to.

AW

[Scramjet]

VE table attached.

B

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[Herko]

AFR table looks pretty good.
With 778 in the CLB's, one thing to try is setting 14.6 back in the 20 column and see how it idles and acts.

WOT areas...still the unknown for actual AFR's w/o a sniffer of some sort.
PE enabled will at least "add" fuel when you're running from the cops.

On your VE tables, you're near maxed (maxed in one cell) in the rear cyl.
This can be a PITA to make a change now, but a change in the tuning constants will give you more headroom.
Sort of a start over but might be worth it.



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[Scramjet]

Herko,  thanks for the input.

1. I will play with the 20 MAP column as you suggested (when the ice and snow melt).  Some calibrations use 14.6 AFR in the 20 MAP cells and other calibrations use anywhere from 12.8 to 13.5.  My acutal would be 14.4 AFR with the CLB table offset.

2. The PE table is now set to go from 13.3 AFR to 11.1 AFR over the pre-set TTS time interval of about 30 seconds.  With the CLB table offset my actual would go from 13.1 to 10.9 AFR.  Comments?

3.  I did notice the maxed out cell on the rear cylinder.  If it just touches the high limit in one cell.  I think it can wait until warmer weather before I repeat the street tune process.  The surrounding cells seen to support the idea that it is very close to "good" at 127.5.

Any comments on the transition area at 65 MAP or is it just seat of the pants for engine smoothness?

This has been great fun so far.  I can't wait to try some of the AFR adjustments.

B

[Herko]

SJ,
Any Open Loop area including the PE is is unaffected by the CLB setting.
The 65-70 columns look good for transition.

Keep in mind, the even if PE is "scheduled" to produce 11.1 AFR, if the VE's were not calibrated in that area, the actual AFR is unknown. The TTST and it's V-Tune feature are unparalleled, but in the WOT high load areas the actual AFR needs to be measured.

[Scramjet]

There must be some other who can comment on the AFR settings.....?

SJ,
Any Open Loop area including the PE is is unaffected by the CLB setting.
The 65-70 columns look good for transition.

If I understand the process correctly the VE's are "set" using the CLB offset of .2 AFR.  Therefore, the entire VE table is offset by .2 AFR if projected from the VE's developed during V-Tune.  Therefore the only cells unaffected by the CLB offset is those cells set on the dyno or otherwise such as TwinScan.

I do understand that the 90-100 MAP column is calculated using a "SWAG" factor.  Maybe we will find out soon if my SWAG projections are accurate!

B

[Herko]

"If I understand the process correctly the VE's are "set" using the CLB offset of .2 AFR.  Therefore, the entire VE table is offset by .2 AFR if projected from the VE's developed during V-Tune."

Yes, if the area was Closed Loop during calibration, it will be offset by the commensurate AFR amount. 

Example: If an area was Closed Loop during calibration but now set back to Open Loop (other than 14.6 in AFR table) this area will be affected by the offset.

[whittlebeast]

Here is how I have my bike set up when running closed loop but most of the time I run open loop with all of the 14.6 cells set to 14.5  All of my CLBs are set to 450

http://www.ncs-stl.com/SertTune/SertAFRTargets.jpg

AW

[Herko]

WB...Cal file #?

[whittlebeast]

It started life as a Sportster stage one map.

AW

[Herko]

oohh kay. Yep...they all start as something...and maintain a base file.

[Scramjet]

I just had an "AAAAHHHHAAA" moment.  The lightbulb went on looking at my MAP output during the last run.  The AFR table starts at 20 MAP.

The bike actually idles at 40 MAP not 20 MAP according to my data run.  20 MAP must be on decel.  Therefore idle (40 MAP) is set at 14.6 with my AFR table settings.

I am idling at 14.6 (actally 14.4) AFR with the current AFR table.  Am I seeing this correctly?

B

[Herko]

B,
Yes, you'll see idle at 40 MAP and there's times it will be 30 something MAP.
When in the 30's it'll start looking left and interpolate data based on the 20 column.
Give 14.6 a try in the 20 column...I think you'll like the results.

[Herko]

"I am idling at 14.6 (actally 14.4) AFR with the current AFR table.  Am I seeing this correctly?"

If you'd like, email me a couple of you DM runs and I can eyeball 'em for you.

[Scramjet]

Herko,

Email sent.

B

[HD/Wrench]

Are you tuning this on a dyno or the street??

[Scramjet]

So far it is street tuning only.

I have asked several times how well the VE's in the 60-80 map columns project out to the VE's in the 90-100 map columns.  I hope to find out soon but a well controlled experiment may be difficult.

B