TDStuart Tuning Adventure

[markmurfie]

Look at what they do between idle> airflow and Idle>airflow track key tabs for dashpot....

If it helps.

All the lopey idle stuff is under the idle airflow section and not dashpot. There are changes to dashpot, but who knows if they were for the lopey idle or just to increase engine braking for track use.

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[K4fxd]

Thats the same tune I have. I thought it had stuff missing. Maybe not.

 

[markmurfie]

Thats the same tune I have. I thought it had stuff missing. Maybe not.

The speed density calculator isnt available for it, because there are two speed density tabs....

MP 9, the one used to transition to lopey idle, for SD coeffecients are the same. MP 12 the one ued for lopey idle is different...

 

[GregO]

Did I miss where the DTC, SD, TB, Torque model were fixed between Friday and now ?

 

[tdstuart]

Did I miss where the DTC, SD, TB, Torque model were fixed between Friday and now ?

Trying to teach myself how the mapped points work. I figured them out but ill have a working ghost cam if I can fix the dashpot idle because for some reason when it goes into dashpot the car won't idle right.

 

[tdstuart]

Any ideas on why the rpm flares when I put it in park and why dashpot struggles to hold idle?

Looks like lots of stuff between gen1 and gen2 changed with the dashpot parameters and nothing I seem to change in the torque settings or dashpot seems to help at all.

 

[markmurfie]

Any ideas on why the rpm flares when I put it in park and why dashpot struggles to hold idle?

Looks like lots of stuff between gen1 and gen2 changed with the dashpot parameters and nothing I seem to change in the torque settings or dashpot seems to help at all.

the fact that you changed the location of a mapped point tells me you don’t really understand how they work. You’ve invalidated 100% of the calibration for those two mapped points. This means torque, spark, and map will be incorrect any time those mapped points are used. Depending on imrc setup, this could even affect wot.

Put the mapped points angles back to stock.
Figure out how to command angles you want through the distance tables and index arrays. This way you can blend and smooth the transition coming off of and returning to idle.

 

[tdstuart]

Put the mapped points angles back to stock.
Figure out how to command angles you want through the distance tables and index arrays. This way you can blend and smooth the transition coming off of and returning to idle.

I already know how to do this. The transitions are fine. If I set the car to a mapped point with high overlap it barely idles. Using mapped point 0 and overwriting the cam timing works way better. Idle to drove transition works great.

The issue is the car will idle fine under rpm control mode and then when you start driving after a certain speed it triggers dashpot. Dashpot idles rougher and I can seem to do any meaningful change. When in dashpot idle if you shift from drive to park the rpms flare. When in dashpot idle in park it (especially after a flare) will not hold a steady rpm and I can’t figure out how to make this better either.

I’ve tried playing with the torque tables and limited dashpot settings with no noticeable improvement.

If I command it to a preset mapped point with a high cam overlap the car runs like shit even with half the overlap I am commanding with mapped point 0

 

[tdstuart]

What if I disable mapped point 0? It will then blend other mapped points right? I wonder if that will work better than setting it to a high overlap mapped point

 

[K4fxd]

Which high overlap mapped point were you using when it wouldn't idle?

 

[tdstuart]

Which high overlap mapped point were you using when it wouldn't idle?

I tried 11 and 12. 11 is only -20,0 and it still didn’t want to idle. For reference I am commanding mapped point 0 to -10,35 (ivo,evo)

 

[markmurfie]

I tried 11 and 12. 11 is only -20,0 and it still didn’t want to idle. For reference I am commanding mapped point 0 to -10,35 (ivo,evo)

The stock idle settles on to mp 1, im not sure why you are tring to command and changing MP0 which is only used for emissions reduction and a stability transition durring decel from high RPMs. Not very good to mess with cam angles in those areas.

 

[tdstuart]

The stock idle settles on to mp 1, im not sure why you are tring to command and changing MP0 which is only used for emissions reduction and a stability transition durring decel from high RPMs. Not very good to mess with cam angles in those areas.

My car commands mapped point 0 at idle.

Again the car drives fine. I like how it drives, it transitions pretty smooth.

The issue is while idling if I shift from drive to neutral it flares while it holds to commanded point. It also doesn’t like idling in dashpot as much as rpm control for some reason

 

[tdstuart]

If you want logs I’ll get you some logs tonight. Most people on the forums setup mapped point 0 for the ghost cam.

I’ll get you a log of me using a mapped point that already has overlap for idle.

 

[Pistol_91]

I havent really messed with the ghost cam stuff too much but pretty sure theyre talking about this. This also shows how the distance tables work

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