AJPTurbo Meth Tune.

StealBlueSho said:
I'm interested in a heads up race against FoMoCoSHO and his corn fed beast...

Thinking I drop the psi in the tires, get em warm, and my comp 2's will hook nice so the PTU won't need to transfer as much to the rear... just enough to keep me from spinning...

Should probably try that....
Click to expand...
I didn't see if you were running a Eblend with your meth?


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Just an update... after quite a bit of testing we have a pretty solid tune on it.. some minor tweaking probably can be done but still the biggest issue is getting the power to the ground...

15psi and 26degrees of spark creates a lot of power and on the 2010-2012 sho or perhaps just my strategy, the ECU triggers torque source 15 when the fronts spin too much... technically it's truncating power going through the PTU as a safety measure for the unit I believe.. which appears to be a non issue on the 2013+ SHOs...

Brad and I have tried more than a dozen different parameters trying to get around that issue with no luck...

So far the LMS Alky tune and Brads tune net a similar 0-60 time. But again, with Brads tune it's constrained getting the power down...

The biggest tell is the 0-90 times where Brads tunes net me 7.8ish seconds where LMS is netting 8.7ish.. those times are without brake launching. Just hit the gas and go. So I suspect I can get the LMS time down substantially with a proper launch. Brads tune I cannot brake launch without the Source Torque 15 issue for now...

Will update again when Brad tweaks the settings so I can brake launch this thing..


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What is very interesting to me is that LMS pushes around 12psi and caps the spark at 23 using the throttle to control boost production among other things. Which is significantly LOWER than what Brad has me running at.. the 0 - 60 times are almost identical at this point with me brake boosting the LMS tune while I ease into the throttle on Brads.. I can't launch how I have been traditionally with Brads tune... if I could then my 0-60's would be beastly.. lol

Seems like LMS puts it right at the limit on the 2010-2012 when it comes to launching... probably for consistency...
 
StealBlueSho said:
Just an update... after quite a bit of testing we have a pretty solid tune on it.. some minor tweaking probably can be done but still the biggest issue is getting the power to the ground...

15psi and 26degrees of spark creates a lot of power and on the 2010-2012 sho or perhaps just my strategy, the ECU triggers torque source 15 when the fronts spin too much... technically it's truncating power going through the PTU as a safety measure for the unit I believe.. which appears to be a non issue on the 2013+ SHOs...

Brad and I have tried more than a dozen different parameters trying to get around that issue with no luck...

So far the LMS Alky tune and Brads tune net a similar 0-60 time. But again, with Brads tune it's constrained getting the power down...

The biggest tell is the 0-90 times where Brads tunes net me 7.8ish seconds where LMS is netting 8.7ish.. those times are without brake launching. Just hit the gas and go. So I suspect I can get the LMS time down substantially with a proper launch. Brads tune I cannot brake launch without the Source Torque 15 issue for now...

Will update again when Brad tweaks the settings so I can brake launch this thing..


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Click to expand...
Sounds like you need to man up and get some DR's for the front.  Cmon, you know you wanna..  what are yah..  chicken? :ices_angel_g:
 
Sooo... two tunes... a track tune and a daily driver... of course I would need to prove out my theory with a set of drs..


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StealBlueSho said:
Sooo... two tunes... a track tune and a daily driver... of course I would need to prove out my theory with a set of drs..


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Click to expand...

You can call up WELD and use their fitment worksheet to determine if the GT500 drag wheels will fit the SHO (they should based on my research). Depending on caliper clearance, you may even be able to put on 17s meant for a 5.0 GT and save a bit extra on the weight. Throw drag radials on front, leave street tires in back, and tear it up :D
 
From what I recall, the few who tried DR's (whether all 4, or just 2 up front) saw no real benefit from them.

Problem being the inability to properly heat them up before a run due to the AWD.

Trying to warm them up, before a run, by driving around in circles where the cars park to cool down after a run, would then cause premature heat soak before a run.

Do what you choose, as it's always interesting/entertaining to see people make additional attempts, but from the few people I know who tried them, it wasn't beneficial.

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bpd1151 said:
From what I recall, the few who tried DR's (whether all 4, or just 2 up front) saw no real benefit from them.

Problem being the inability to properly heat them up before a run due to the AWD.

Trying to warm them up, before a run, by driving around in circles where the cars park to cool down after a run, would then cause premature heat soak before a run.

Do what you choose, as it's always interesting/entertaining to see people make additional attempts, but from the few people I know who tried them, it wasn't beneficial.

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Click to expand...

Curious BPD... when you got your engine built, did they upgrade your ECU to the 2013+? I suspect you do not experience the advance traction control stuff with you 11.5 times? Or is that all part of the secret sauce you don't disclose?
 
Still on my factory ECM as it rolled off of/from the assembly line.

Since mine is technically a Non-PP, I am unable to completely disable the traction control protocols. Limit them, but not completely disable them.

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bpd1151 said:
Still on my factory ECM as it rolled off of/from the assembly line.

Since mine is technically a Non-PP, I am unable to completely disable the traction control protocols. Limit them, but not completely disable them.

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Click to expand...

Does advance track ever kick in during your launches?
 
You know, honestly, never paid attention.

I was/am more focused on my rpm's, as well as my boost gauge when launching.

Besides, I know in the back of my mind, based on all of my own previous experiences, that I'd be getting wheel spin upon launch anyways.

That spin has come in varying forms/degrees as my suspension, wheels, power levels, etc. have all changed over time.

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It might be time for a set of Megan-Coilovers,powergrids such as bpd1151.  Z
I'm looking to take the H&R route Soon.
 
bpd1151 said:
You know, honestly, never paid attention.

I was/am more focused on my rpm's, as well as my boost gauge when launching.

Besides, I know in the back of my mind, based on all of my own previous experiences, that I'd be getting wheel spin upon launch anyways.

That spin has come in varying forms/degrees as my suspension, wheels, power levels, etc. have all changed over time.

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Click to expand...

Would you say upgrading your suspension cut back at all on the wheel spin?

Trying to figure out how much more I want to go with this thing before calling it quits and being happy.


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