TTS, What about PE

[Don D]

Should this be toggled off during V-Tune sessions? Can this be done?

[Herko]

Yes, there are tuning guides out there that instruct this.
The one on the TTS site as well.
Done by setting the PE initiating RPM out of range.

[WVULTRA]

As Herko stated, grab the TTS Manual here:

http://www.mastertune.net/files/Tuning%20Files/Manuals/MasterTune_Tuning_Guide.pdf

Page 41 gives details.

[whittlebeast]

If PE only comes in when hard into the throttle and VTune /closed loop is only in effect at about 15% throttle and below (assuming you are not at high altitude) how would these ever step on each other?

Just asking questions

AW

[Herko]

...and VTune /closed loop is only in effect at about 15% throttle and below...    

Yes??

[whittlebeast]

Herco

Feel free to post a log and we can take a look.

Andy

[Steve Cole]

If PE only comes in when hard into the throttle and VTune /closed loop is only in effect at about 15% throttle and below (assuming you are not at high altitude) how would these ever step on each other?

Just asking questions

AW

Are you for real? You claim to be a tuner, You claim to have used Vtune, yet you ask a question that you know to be totally false! Vtune works long past 15% tps and if you had really done any of the things you have claim in the past you would know this. So are you lying now or were you lying before as it has to be one or the other!

[whittlebeast]

Steve

You managed to miss the point again, concentrated on bashing me personally and changing the subject.  Nice touch. 

At anywhere near sea level, do the two ever get involved at the same time?

AW

[Jeffd]

As Herko stated, grab the TTS Manual here:

http://www.mastertune.net/files/Tuning%20Files/Manuals/MasterTune_Tuning_Guide.pdf

Page 41 gives details.

man why can't the Daytona twin tec tc88a have a manual even close to that?

[Herko]

...and VTune /closed loop is only in effect at about 15% throttle and below...    

Yes??

Herco

Feel free to post a log and we can take a look.

Andy

When I get back to the shop computer I can post a VTune historgram that will illustrate the answer to your rhetorical question.

[whittlebeast]

I normally do not like to run at 14.7 AFR anywhere past about 70 KPA.  I only use VTune to get in the ballpark and see the general pattern that is developing in the VE Tables.

The real question is do the two functions ever cross paths?  How deep into the throttle are you willing to expose the motor to detonation and heat.

AW

[Steve Cole]

No Whittlebeast I did not miss the point! I hit the nail on the head. IF you had used Mastertune and our MT7 calibrations you can run up to the 60% throttle range and still use Vtune at sea level, further at higher altitudes. Vtune works based on load and RPM along with other things you do not understand. The range for load is ~ 28 - 85 kPa. Had you ever bothered to use the product that you keep trying to tell everyone doesn't work right you would have known that. If your going to try and ask questions go learn the product or at least step up and tell the truth about it! The PE function is calibration based so the answer to your other question is yes it can and does cause issues. You do not have to expose the motor to detonation at all and the heat factor is purely up to the person doing the tuning. Running at 14.6:1 for tuning purposes only at WOT will not hurt a thing and as a matter of fact many current model OEM cars run it all the time these days.

[whittlebeast]

you can run up to the 60% throttle range and still use Vtune at sea level, further at higher altitudes.

And what is the lowest throttle position that will activate PE?

AW

[Don D]

Why not just leave it off once the VEs are corrected? It would seem logical to me that with the right adjustment on accel enrichment and AFR the whole PE function could be toggled off for good

[Steve Cole]

The PE function in a HD is used to cool the motor under extended heavy loads. Look at the table and you will see it's based on time. The mixture goes richer the longer your in the PE mode.

[Krusty]

I gotta question. I did a couple of v-tune runs but forgot to disable PE mode. Looking back at the data runs I never got into the range that PE would kick in. Are my VEs calibrated or do I need to go back and v-tune again?

[Steve Cole]

Vtune will weed out all bad data so it will not effect the tune you have. The issue is that there may be areas you could have tuned in better but did not due to PE kicking in.