Edge Evolution WOT Not Shifting
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From: Among javelinas and scorpions in Zoniestan
glc: I briefly checked out their website. Do I have to pay for a whole new unit? Or is it just $30 for them to customize it?...if this is the case its almost just worth it for peace of mind. I have not done any research on this so please hold back the "do a search" rock throwing, but how do they tune my device without my truck? You said "send the device to Power Hungry Performance, get it converted to a Gryphon, and get custom tunes". I gues I should give them a call directly and they can help me out.
But one last time, does anyone think this could be a problem with my unit? Because I definitely dont want to spend money to get custom gryphon stuff if the unit is malfunctioning.
Thanks!
But one last time, does anyone think this could be a problem with my unit? Because I definitely dont want to spend money to get custom gryphon stuff if the unit is malfunctioning.
Thanks!
BUT, I'm not sure you really have a problem yet. And, I don't see how you'll hurt anything doing one more WOT test. What happens is, as you reach the shift command point, the shift starts. At that moment, the engine is disconnected from the drive train and is "freewheeling", so the RPM increases rapiidly. When the shift completes, everything is connected again and the RPM decreases. It's possible your "shift firmness" (the time between clutch release and lockup) is too long, although when you load one for Edge's canned tunes, that time should have actually been deceased.
However, if you do a WOT run and just keep the accelerator floored, if the engine winds up to the rev limit, it will just "cut out" (to prevent damage). It feels like crap when it does this, because it will almost immediately cut back in again as soon as the rpm falls a bit and you might get a "cycling" in/out effect. But, it really should not hurt anything - I've taken my truck to that point in the 3-4 upshift. Edit: See my next post, this should have been 2-3 upshift.
So, you SHOULD expect to see the rpm pass the shift command point.
Now, if the shift does not complete without you backing off on the accelerator, you have some options:
1. Reduce the shift command point(s).
2. Increase the rev limit (but I would not go above 5600).
3. Try increasing the shift "firmness" settings. I'd not set them higher than +12 for 1-2, +12 for 2-3 and +9 for 3-4 though. Shifts that are too "quick" put stress on the mechanical components. If they're too slow (soft) they put more wear on the bands. In the Edge, a firmness setting of +12 reduces the unlock/lockup delay by 12%.
Finally, if you are still having trouble - call Edge Tech Support! You paid for that when you bought the device!2. Increase the rev limit (but I would not go above 5600).
3. Try increasing the shift "firmness" settings. I'd not set them higher than +12 for 1-2, +12 for 2-3 and +9 for 3-4 though. Shifts that are too "quick" put stress on the mechanical components. If they're too slow (soft) they put more wear on the bands. In the Edge, a firmness setting of +12 reduces the unlock/lockup delay by 12%.
- Jack
Last edited by JackandJanet; Dec 30, 2010 at 12:25 PM. Reason: Corrected stupid statement
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From: missing Texas...
Well this is starting to irritate me. I ran the canned level two and it DID shift at WOT but hesitated and was a very rough shift. So I tried again with 1-2 and 2-3 at 5025, and 3-4 at 4600. Rev limiter at 5500. I did not shift...(by this I mean I didnt give it a chance to, as soon as it was on its way past the shift point and to the rev limiter I let off the gas - this was all by watching the tach which could be inaccurate so maybe I shouldnt do that). Could this be my edge unit malfunctioning?
I bought this unit to keep an eye on temperatures and the tuning is just a bonus feature that I was hoping to learn how to use. But I do not like all this unsuccessful WOT testing I have been doing, its just not worth the risk. Any thoughts? And thanks so much for the interest and responses so far!
I bought this unit to keep an eye on temperatures and the tuning is just a bonus feature that I was hoping to learn how to use. But I do not like all this unsuccessful WOT testing I have been doing, its just not worth the risk. Any thoughts? And thanks so much for the interest and responses so far!
not to mention your lovely stock torque converter
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From: Joplin MO
Just curious - how are you managing to reach the WOT shift point from 3 to 4? With your tire size, if you have 3.73's, it's doing 110 in 3rd at 4600 rpm. With 3.55's, it's even higher - 115.
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From: Among javelinas and scorpions in Zoniestan
And, I think I misspoke. :o This was a long time ago and it occurred when I was passing someone. I'm pretty sure it was a 2-3 upshift. Happened at around 85 mph, and, of course, the rpms were above 5000. I was also new to the programmer game at the time and didn't have the spacing between shift command point and rev limit right. Sorry for the (my) confusing post.
- Jack
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Jack: thank you for all the feedback you have provided. I have been busy with work this week, but I am off tomorrow and plan to spend some time on this. I will try your suggestions and post the results.
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From: Among javelinas and scorpions in Zoniestan
It's OK, glc, my saying 3-4 upshift was pretty dumb. With my tires, (649 revs/mile) and 3.73 gears, I'd only be turning 4438 rpm at 110 if the torque converter was locked in 3rd gear. Of course, at WOT the TC would be unlocked, but still, I was only doing about 85 mph at the time.
I don't like it when I make stupid statements and prefer that they be corrected.
- Jack
I don't like it when I make stupid statements and prefer that they be corrected.
- Jack
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I set the shift points for 1-2 and 2-3 at 5025, and 3-4 at 4600. I increased the shift firmness to +6 for 1-2 and 2-3 then +2 for 3-4. The redline is set to 5500. It did exactly as you predicted and worked perfectly. Thanks for all the help everyone. Now to I just need to use it for a while and see what kind of improvements I gain.