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Old 06-04-2013, 09:26 PM   #18
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Originally Posted by white 2SS/RS View Post
Could just be that you're already right at the MPH flag?
I intentionally left my MPH flag's low and figured I'd start creeping up on the shift point that I wanted. And my RPM flags were set right at 6400.....and the shift happened at 6400. As I started upping the MPH, the shifts were still happening at 6400.
Either way, a few others have had the same experience I have.....and others (like you) haven't.

Yep, I wish mine was as easy as commanding the RPM...boy that would have saved me some stress..haha
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Old 06-04-2013, 09:51 PM   #19
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Originally Posted by white 2SS/RS View Post
I'm no expert, but certain T42's definitely don't shift JUST based on MPH. Mine is one of them. 1-2 is almost purely based on mph, but my 2-3 and 3-4 are shifting based on RPM.
This is 1000% correct. This uses both mph and rpm to determine the shift point. There is no way to dictate which one it uses. I know from experience a while back. It took many passes to get the wot shifting perfect. I would bet that 99% of the l99's are shifting all over the place. It takes a lot of effort to get the shift point exactly where you want it.
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Old 06-04-2013, 10:29 PM   #20
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There are Multiple TCM operating systems and they all have they're own Quirks.

Some you can just set the RPM and it will nail it,
some you can just do MPH
some require Both to be dead on or it will favor one or the other.
Any Tire spin and everything goes out the window.

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Old 06-04-2013, 10:38 PM   #21
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Quote:
Originally Posted by JANNETTYRACING View Post
There are Multiple TCM operating systems and they all have they're own Quirks.

Some you can just set the RPM and it will nail it,
some you can just do MPH
some require Both to be dead on or it will favor one or the other.
Any Tire spin and everything goes out the window.

Ted
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Old 06-05-2013, 07:13 PM   #22
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Isn't it past your bed time?

Must be working overtime.
Or he's now working late at night because you bug him all the time during the day.
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Old 06-21-2013, 03:07 PM   #23
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Poked around, okay to piggy back on this thread?

So if I am tuning my own shift points for an L99 with HP Tuners, and let's say I was going for a 6200 shift point on 2-3. Let's say I hit my targeted goal last time with '58' mph and '6000' RPMS in the appropriate tables. So to try to and hit 6200, should I go up 1 or 2 MPH? And should I also command 6200 for RPMs?
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Old 06-21-2013, 04:21 PM   #24
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I can't answer your question, but I don't mind the piggy backing
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Old 06-21-2013, 05:14 PM   #25
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Command the RPM to 6200rpm
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Old 06-21-2013, 05:49 PM   #26
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Command the RPM to 6200rpm
Yup. And see what happens. If you don't get your 6200shift, then your car might use mph AND rpm on the 2-3 and 3-4.

I will tell you that you might want to keep bumping your mph up even if you get the shift at the correct rpm. To me, it looks like the TCM is still using the mph to start the pressure adapts for the oncoming and offgoing clutches.
If you log Trans Slip and each of the PCS pressures, you'll see what I mean.
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Old 06-21-2013, 06:09 PM   #27
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So Dan you would not increase the RPM and MPH both right off the bat?

Also anyone know how to calculate what rpm I'd be with stock tires when I'm going 60mph, and also what gear I'd be in at at 100mph (I'm thinking 4th on this right).
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Old 06-21-2013, 09:58 PM   #28
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Do you mean at WOT John or just cruising?
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Old 06-21-2013, 10:02 PM   #29
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LOL I only care about WOT.
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12.06@113 1.70 | + CD 3200 + 18" NT05R + RCR Intake + NE OTR + GPI Tune
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Old 06-21-2013, 10:02 PM   #30
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I know mine,so far,we just raised the RPM shift,and it shift where I want it.I'm at 6600RPM now.
But I think I'm gonna raise the MPH abit also.Maybe 1 or 2 mph at a time I use my logs at the track,it gives me an idea where the MPH is at each shift.
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Old 06-21-2013, 10:05 PM   #31
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If I use one of my track logs last year with the stock converter and 3.27 gears.
At 60mph, I'm in second gear at 5800RPM
At 100mph,I'm in third gear at 6100RPM.
My shift point were set at 6200RPM at the time.
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Old 06-21-2013, 10:08 PM   #32
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Now if I check one of my logs a couple of weeks ago with a Protorque 2600 and 3.45 gears.
60mph= second gear at 6078RPM
100mph=third gear at 6416RPM
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Old 06-22-2013, 09:20 AM   #33
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Quote:
Originally Posted by Pro Stock John View Post
So Dan you would not increase the RPM and MPH both right off the bat?

Also anyone know how to calculate what rpm I'd be with stock tires when I'm going 60mph, and also what gear I'd be in at at 100mph (I'm thinking 4th on this right).
I think I'd try just the rpm first, although I was moving both MPH and RPM when I was getting mine set to 6400rpm.
Again, watch trans slip and PCS pressures and you'll see what I mean about the mph initiating clutches.

John, I'm going to shoot you an e-mail with a spreadsheet that one of the well known tuners on the HPT forums put together for rpm vs mph on the 6L.
See if that helps with your last question?
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Old 06-22-2013, 10:12 AM   #34
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Thanks john@motorsports-media.com
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13.15@106 1.95 | 100% Stock
12.37@112 1.85 | + Kooks Headers/Cats + 20" 555R + CAI + BW TB + UDP + Tune
12.06@113 1.70 | + CD 3200 + 18" NT05R + RCR Intake + NE OTR + GPI Tune
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