K2 Diablo Tune

Crstfr · April 11, 2017

if you run the 87 oct tune, is it safe to run 89 oct?...

AZ_SS · April 12, 2017

if you run the 87 oct tune, is it safe to run 89 oct?...

Yes, thats what I am currently doing.

Edited April 12, 2017 by AZ_SS

Crstfr · April 12, 2017

Thanks AZ.. i always wondered that... ..

AZ_SS · April 13, 2017

No problem.

jamoka3 · April 13, 2017

Here is a post I made in another Diablo thread regarding TM:

The first time I tuned with the inTune i2 I turned upshift TM (torque management) off and went with the firm shift setting. While the shifts were firmer, they were randomly firmer. Every so often the 1-2 shift would be really firm and then sometimes soft. After doing more research on upshift TM I decided to turn it back on (stock setting). I think the shifting is more consistent now. Partial throttle shifts are a little more firm then stock and WOT shifts are firm but not harsh. This is what Mike on the DIablosport forum said about upshift TM:

"we often recommend leaving the upshift abuse mode TM enabled as it can lead to sloppy shift feel when disabled, as you may have discovered. TM on the engine side is already disabled in the tunes."

"this is TM specific to when the trans upshifts in 'abuse mode' meaning heavy throttle/WOT, leaving it on allows the pcm/tcm to make the shift smoother, turning it off removes any timing/throttle adjustments to smooth out the tune."

It sounds like there are two TM settings. One on the engine side and one on the transmission side. The engine TM is turned off in the canned ECM settings (87 or 91 tune). The transmission TM (upshift TM setting) is the only user selectable TM option and is under the advanced TCM settings. I plan to leave it on as I think it feels better and really don't see any reason to turn it off as I don't think it affects throttle response (power to the ground). Appears it simply pulls timing between shifts and turning it off can potentially cause slopping shifting.

I originally ran with TM off (disabled) and also noticed strange shift habits, normally under light load or a range of 20~40mph while light driving around town.

So I changed my original parameters from this :

12/21/2016

The settings I have used on my 2016 Silverado 5.3L 6 speed Auto w/ 3.42 gears are,

87 octane Performance tune.

Firm Shift Transmission tune - ON

DOD (AFM )- OFF

TORQUE Management - (OFF)

Throttle boost - (range is 0-25% ) I have it set at 3%, *Curious to know if anyone else has messed with this setting?

Adjusted + 50rpm in gear and + 50rpm in neutral and park.

Mods- Currently Running K&N Black Hawk Series CAI, w/ a full Banks Performance Stainless Steel cat back.

........................................................................................................................................................................

Now: as of 4/11/2017

87 octane Performance tune.

Firm Shift Transmission tune - ON

DOD (AFM )- OFF

TORQUE Management - *(ON)

Throttle boost - (range is 0-25% ) Now I have it set at *10%,

Adjusted + 50 rpm in gear and + 50 rpm in neutral and park.

Mods- Currently Running K&N Black Hawk Series CAI, w/ a full Banks Performance Stainless Steel cat back.

I did not notice any power lost on up shifts, and with the slight bump in the throttle boost, the truck kinda "feels" quicker?

Edited April 13, 2017 by jamoka3

arcasey · April 14, 2017

For those of you that have played around with the throttle boost parameter, have you noticed increased engine speed at idle? Maybe I'm not understanding exactly what the parameter does. With the stock tune my truck idles around 550 RPM when in park/neutral and 500 RPM when in gear. With the 87 Octane tune and throttle boost set to 10% the idle speeds change to around 900-1000 in park/neutral and in gear. Is this normal behavior when playing with throttle boost parameters or am I missing something?

Sierra Jon · April 14, 2017

For those of you that have played around with the throttle boost parameter, have you noticed increased engine speed at idle? Maybe I'm not understanding exactly what the parameter does. With the stock tune my truck idles around 550 RPM when in park/neutral and 500 RPM when in gear. With the 87 Octane tune and throttle boost set to 10% the idle speeds change to around 900-1000 in park/neutral and in gear. Is this normal behavior when playing with throttle boost parameters or am I missing something?

I used to run 20% throttle boost but right now I'm running torque management off so I turned the boost off (I'm basically just trying to feel what the individual settings are doing). I'm also trying to gain some mpg's back.

But to answer your question, when the throttle boost was on I did not notice a change in idle. Is it possible the truck was cold? I did however noticed it shifted higher in the RPM range with throttle boost on. I think what is happening is the throttle position is not being read properly so the tranny acts a little different. What I noticed most was the ease of driving in the highway - very little pedal input needed with throttle boost on for long highway trips. I loved having throttle boost at 20% but like I said, your mpg takes a hit.

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arcasey · April 14, 2017

I used to run 20% throttle boost but right now I'm running torque management off so I turned the boost off (I'm basically just trying to feel what the individual settings are doing). I'm also trying to gain some mpg's back.

But to answer your question, when the throttle boost was on I did not notice a change in idle. Is it possible the truck was cold? I did however noticed it shifted higher in the RPM range with throttle boost on. I think what is happening is the throttle position is not being read properly so the tranny acts a little different. What I noticed most was the ease of driving in the highway - very little pedal input needed with throttle boost on for long highway trips. I loved having throttle boost at 20% but like I said, your mpg takes a hit.

Sent from my Nexus 6 using Tapatalk

When I noticed the increased idle speed I'm sure the truck was warm, or it should have been. I took about a ten mile drive after I changed the tune parameters and it was about 75 degrees last night. I stopped by my buddy's house because he was outside and I was talking to him and that's when I noticed the difference in the idle speed. Also the temp gauge was reading around 210 degrees while doing so. I re-installed the stock tune when I got home and things were normal again. I may try to re-install the 87 Octane tune and adjust the parameters again and see what happens. I was thinking the way the parameter worked was that as soon as the throttle was pressed it would immediately advance X% forward, i.e. would jump from 0% to 10% throttle as soon as pedal was mashed. Mine acted like the throttle position was moved from 0 to 10% and that is the minimum that it would go down to. But then again, maybe I'm not understanding what the parameter actually changes.

Sierra Jon · April 14, 2017

When I noticed the increased idle speed I'm sure the truck was warm, or it should have been. I took about a ten mile drive after I changed the tune parameters and it was about 75 degrees last night. I stopped by my buddy's house because he was outside and I was talking to him and that's when I noticed the difference in the idle speed. Also the temp gauge was reading around 210 degrees while doing so. I re-installed the stock tune when I got home and things were normal again. I may try to re-install the 87 Octane tune and adjust the parameters again and see what happens. I was thinking the way the parameter worked was that as soon as the throttle was pressed it would immediately advance X% forward, i.e. would jump from 0% to 10% throttle as soon as pedal was mashed. Mine acted like the throttle position was moved from 0 to 10% and that is the minimum that it would go down to. But then again, maybe I'm not understanding what the parameter actually changes.

Right, I think 0% throttle is still 0% if that makes sense. That's the way it felt anyway... I would give it another go and report back if you don't mind.

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arcasey · April 17, 2017

Right, I think 0% throttle is still 0% if that makes sense. That's the way it felt anyway... I would give it another go and report back if you don't mind.

Sent from my Nexus 6 using Tapatalk

Okay, so after I re-installed the factory tune I installed the 87 Octane tune with the 10% throttle boost and everything seems to be normal now. It must have been a fluke when I changed it last time.

SPrew94535 · April 17, 2017

I like it. I can tell there is a little more low end response when I need it. This plus the transmission holding lower gears longer helps a lot with acceleration.

So how high is your idle now at park and in gear with your adjustment

I get my tuner later today so trying to figure out the best settings. Im not a hot rodder. Just would like it to have a better idle and get better mpg's and I'll be happy. If anyone can recomend the setting to get that I'd appreciate it! Thanks.

Ive got 87, 91 and 93 octane down here and would like to use the 87 or 91 if I have too

Edited April 17, 2017 by SPrew94535

gone_fishing · April 17, 2017

So how high is your idle now at park and in gear with your adjustment

I get my tuner later today so trying to figure out the best settings. Im not a hot rodder. Just would like it to have a better idle and get better mpg's and I'll be happy. If anyone can recomend the setting to get that I'd appreciate it! Thanks.

Ive got 87, 91 and 93 octane down here and would like to use the 87 or 91 if I have too

I have my idle RPM in both park and gear set to +50 RPM. I like this setting as it seems to have smoothed out the idle (especially when at a stop in gear with the AC on). I have the throttle boost set to +15% and this helped a lot with throttle response. Throttle boost did not affect my idle any. My fuel economy hasn't gone down any either. In fact my overall MPG is maybe even up a little. I drive mostly highway though.

Here is what I have mine set to:

- 87 octane flex tune

- Trans tune firm shift

- DOD off (V4 mode)

- Throttle boost +15%

- Idle park/neutral RPM +50

- Speed limit off

I had upshift torque management turned off and throttle boost at zero originally. I decided to turn upshift TM back on as it seemed to do nothing for throttle response and made for occasionally sloppy shifts. Throttle boost made the most difference. Later found out from the DiabloSport forum that the engine tunes disable engine torque management. It's built into either the 87 or 91 tune. The user selectable TM setting is the upshift TM setting and this is different the the engine torque management. This is what they said on the forum regarding upshift TM:

"we often recommend leaving the upshift abuse mode TM enabled as it can lead to sloppy shift feel when disabled, as you may have discovered. TM on the engine side is already disabled in the tunes."

"this is TM specific to when the trans upshifts in 'abuse mode' meaning heavy throttle/WOT, leaving it on allows the pcm/tcm to make the shift smoother, turning it off removes any timing/throttle adjustments to smooth out the tune."

tyrich88 · April 17, 2017

So how high is your idle now at park and in gear with your adjustment

I get my tuner later today so trying to figure out the best settings. Im not a hot rodder. Just would like it to have a better idle and get better mpg's and I'll be happy. If anyone can recomend the setting to get that I'd appreciate it! Thanks.

Ive got 87, 91 and 93 octane down here and would like to use the 87 or 91 if I have too

I haven't messed with the idle at all yet, but as far as my other settings, I run the 87 octane tune with DOD/AFM off, 3% throttle boost, speedometer corrected, speed limiter off and trans firm shift on.

I flashed it back to stock to take it to the dealer this morning for my last free oil change of the 2 yr 24k mile deal and didn't really realize how much of a pig it drove like before.

As soon as i got out of the dealer I pulled around the parking lot, installed the tune again and was completely reminded of the changes that came when I first installed the tune.

My highway MPG has definitely gone up a couple MPG's and the city mileage is better as well. I have so many stop lights on my commute and such a heavy foot, that too much throttle boost just kills my MPG because I can't keep my foot out of it lol.

I'm already talking with Lew and will be doing a data log for him next week and getting a custom tune, I'll keep yall posted on those changes as well if anyone is interested.

Edited April 17, 2017 by tyrich88

SPrew94535 · April 17, 2017

I haven't messed with the idle at all yet, but as far as my other settings, I run the 87 octane tune with DOD/AFM off, 3% throttle boost, speedometer corrected, speed limiter off and trans firm shift on.

I flashed it back to stock to take it to the dealer this morning for my last free oil change of the 2 yr 24k mile deal and didn't really realize how much of a pig it drove like before.

As soon as i got out of the dealer I pulled around the parking lot, installed the tune again and was completely reminded of the changes that came when I first installed the tune.

My highway MPG has definitely gone up a couple MPG's and the city mileage is better as well. I have so many stop lights on my commute and such a heavy foot, that too much throttle boost just kills my MPG because I can't keep my foot out of it lol.

I'm already talking with Lew and will be doing a data log for him next week and getting a custom tune, I'll keep yall posted on those changes as well if anyone is interested.

SPrew94535 · April 17, 2017

Please excuse my last post. Posting off a phone doesnt work sometimes. Ive noticed that people are deactivating the AFM. Any particular reason for doing this? Have you seen a drop in milage due to this? thanks.