Custom tune issues?
 

I started my own post so I wouldn't hijack the other gentleman's post with the same problem.

I've been running the canned level 2 since I received the Gryphon. On my truck this wasn't near the improvement over stock others mention though there was a slight improvement. This made me quite anxious to get my custom tune in hope there was more performance to come.

I received my custom 87 performance tune 9/30.
I drove it 85 miles thinking to myself something aint right here. The new tune feels like stock performance with perfect shifting. I programed it to the level 2 canned tune, canned level 2 is more powerful feeling with so so shifting.
I tried stock VS the new custom 87 tune, there appears to be no difference in performance though the shifting is night and day better using the custom tune. I re installed the custom tune due to the vast improvement in shifting. So far 140+ miles on the custom tune.

I am quite disappointed with the custom tune.

Hopefully there is a remedy.

Level 1 custom 87 perf.
Level 2 canned tow.
Level 3 canned 93 perf.

I appreciate you calling me a gentleman as I frequently get called worse on a daily basis!!! I notice many, if not all of the same things as you, particularly, the power on canned level 2 feels noticeably higher than the Custom 87 Perf I have.

Since originally posting I have gone through a lot of fuel testing the various tunes, hoping that I was doing something wrong and the canned level 2 is still far and away the best I have noticed so far. The stock and Custom 87 Perf tune shifting on my truck are both very lethargic. On both, I can punch it, run it up there in speed in 2nd gear, let off the gas before it shifts to third to coast and drink almost a whole cup of coffee, while I am coasting, before the truck finishes shifting down to OD!

On the canned level 2 the shifting is very firm out of the box, so i was running a -5 on all shift firmness settings which worked very well for me. While playing around today with the tunes, Custom 87 perf required a +10 on the shift firmness to be in the ball park of the canned level 2 on -10 shift firmness, but, canned level 2 feels noticeably more powerful.

Well I definitely have to say something doesnt sound right with yalls tunes. The best advice I can offer is try to get in touch with php so hopefully yall can get this worked out.

John,

As I mentioned to Greg, try running the truck in "stock" mode for an hour or so and then retry the performance program. Sometimes the PCM learns a bit far in one direction and needs some time to settle back in to a "normal" type of mode.

If this doesn't work, I'm certainly happy to revisit the calibration and make any adjustments necessary.

Keep me posted.

I appreciate the suggestion. I'll give it another try. :thumbs up yellow:

I have to say I don't understand. Before I made the post or e-mailed Corey I did try stock for about an hour and 40 miles then the custom tune for about the same for back to back comparison. Besides the shifting aspect there seriously appears to be no other performance difference. Any time I reload canned level 2 I can feel a slight performance improvement though the shifting suffers verses what the custom tune provides.
I now have about 160 miles on the custom tune.

I'm in the :censored1: Seattle area on business right now, it will have to wait till the end of the week.

Thanks, John

John,

If you've already tried the stock method with no results, then I'll definitely look into the files. I just wanted to make sure we eliminated a PCM learning issue before going any further into it.

I'll get a look at the calibrations in the next day or two and will have an update available by the end of the week for you. Just check the [Update Status] in Pegasus for a later release date (after 10/05) for the calibration on the server.

Take care and have a safe trip.

Bill,
I do not mind at all waiting until I get back and trying the stock method you suggest again. I didn't time the first attempt, could've been 45 - 50 minutes or an hour and 5 minutes.
I know there was 4 - 6 key cycles (start stop) in the time frame. Almost all light throttle in town driving, one 4 mile hi way trip each tune.

If I didn't already mention it, the shifting on the custom tune is supreme, almost to good to be true. :2thumbs:
So good in fact I am thinking about another custom tune something like "tow / haul" if the shifting would be similar.

Thank you for your time, John.

:cheesy smile:

John,

I think you've probably driven it long enough at stock to have cleared the settings out. We'll go ahead and get a look at the files again and see if there's anything I can adjust to improve the performance.

Let me know if you'd like a Tow program. The shifting will be relatively identical with the exception that the low to mid throttle shifts are a couple MPH higher to help keep RPMs up in the torque curve.

I'll give you a shout when I get the files ready.

Take care.

I'd be interested to know what yall find out on this. I noticed the exact same thing with my custom tunes; I didn't get the "jaw dropping WOW" that most seem to describe (very similar experience to what Rustler has described). I cannot "feel" any additional power over the canned tunes and maybe very slight power improvement over stock. My expectations could have been unrealistic and I have not gotten on a dyno, which I intended to do but never got around to.

There is certainly improvement over stock as far as shifting (much more responsive), and I could have gotten the power gains that should be expected with custom tunes, but definitely not what I anticipated as far as the seat of the pants feel goes.

I'll try going back to stock again, but I did that months ago and didn't notice a difference after reloading the custom tunes.

I have a 2008 5.4 SCREW 4x4 with 3.73 gears and HEX: RXDG6B4. What do yall have?

My hex is RXDE5E2.

I think there are some differences in our custom tune experience.
If my experience can help others with their concerns I'm all for it.

I am not bashing Bill or the product when I say there is absolutely no difference with my trucks performance other than the shifting between stock and my custom 87 perf tune.
I feel sure anyone could drive my truck and come to the same conclusion rapidly.
Canned level 2 has a noticeable performance gain over my custom tune.

I'm certainly not bashing Bill or the product. I talked with Bill briefly about my concern when I first received my tunes, and told him that I would get on a dyno to see what was up...never got to it. Since I seemed to be the only one not jumping for joy over the performance gains of the custom tunes I chalked it up to unrealistic expectations and forgot about it. I noticed your thread here and decided to see what was up.

I replaced all of the canned tunes with custom, so I cannot compare the custom to canned any longer. And, I stopped running the canned tow tune a few weeks before I received my custom tunes due to transmission shudder. But, I do remember feeling that the canned tow tune would significantly out perform my custom 87 performance, although the shifting of the custom tunes blows the canned and stock tunes out of the water.

I was curious if we had the same HEX as I've read about some problems mine has caused with custom tunes. I'll step out of the way and let you get yours figured out.

Sorry if you took it wrong I didn't mean to imply you were bashing or your response / input was unwelcome.
We learn from each other too.

Ok i had decided i expected too much but i think i have the same setup you do (07 5.4 373LS 4x4 and same hex, although i have an s&B CAI) and im sort of in the same boat. I say sort of because i have noticed gains but the differences from 87 tow(edge) to 87 performance(custom) were not what i was expecting, particularly b/c i got no more fuel economy. maybe this is related to our hex code? Dont get me wrong, im happy with my gryphon i just feel like from others responses i missed something :shrug:

My truck is stock with the exception of a cat-back, and I have LS also. My truck drives better with the custom tunes, but I don't feel the performance/power gains I was expecting. My expectations were based solely on reviews and reports others had written. I saw some folks talking about breaking their tires loose, and even catching a tire scratch going to 2nd with a completely stock truck (auto trans) & custom 87 perf; I can go to the floor with my custom 87 perf tune and can't chirp the tires unless I'm on a steep incline (maybe the others didn't have LS, if that makes that much difference). Don't get me wrong, I'm not looking for a hotrod, and I don't drive my truck aggressively; just seeing what the tunes are capable of.

Anyway, it's all subjective and speculation unless I actually get on a dyno, which I can't ever seem to find time for.

I don't have anything negative to say about my tunes as only a dyno can tell the real story, and this is the first time I've actually talked about this with anyone other than Bill. As I said, I saw Rustler's post and got curious.

I didn't notice any fuel economy gains, but I also haven't watched it too closely as that would have been a fringe benefit for me; not the primary reason for getting tunes.

If I ever make it to a dyno I'll let you know what I find out after talking with Bill.

TX_Hunter,
Please fill out your user info on the forum.
You will find it in the user cp tab.
Thanx
Lars

Update
 

Update,

I received and applied a tune update from Bill.
Actually I received the update 10 / 5 but didn't download and try it until this morning due to a brain fart on my end.

I feel a definite performance increase over stock and an overall positive performance gain over the previous custom tune.
I haven't had the chance to put many miles on it since the updated file was installed but I can understand why folks like their custom tunes.

I don't know at this point if future tweaks will be needed but you can remove me from the disappointed with custom tune category.

I wish I could change the title to something more appropriate like "Custom tune issues? "

John,

Since you are the OP, I've changed the name of the thread per your request. I'm happy that things are working better. Just keep me posted over the next week or so as to how they're holding up.

Take care.