custom tunes that you received via EMAIL?

I have been experiencing that emailed custom tunes do not take to modifications. In other words, after you "modify parameters" then "install tune," nothing changes. I have tried this several times, in effort to add timing and I keep getting the same exact WOT timing.

I have spoken to another Lightning owner who has had this same problem as well. I am hearing that Diablosport is working on a Fix for this, but same is not yet out. It is a shame that these things were/are sold as being able to modify your tune, but unable to actually do so. It is also my understanding that ONLY the factory installed Diablosport tunes can be modified.

Anybody here try to modify a custom tune that was EMAILED to you? Did you check it to make sure it responded to your changes?

Thanks.

 

What you need to realize is that there are many things that affect timing. There is not just one timing table. There are several tables, and a WHOLE bunch of spark multipliers/adders. So there may be other things going on that are contributing to that issue. The other thing, and most likely the cause of the problem, is that there is a max allowed spark table in the calibration. If the tuner has set that table to match what he's programmed, you will not be able to increase timing. You will be increasing the main timing table, but it will be clipped at the max allowed value. Hope that helps.

 

Sal, is what you are saying is, that it is possible there may be a problem with the emailed tune itself, and not with the Diablosport/Predator and its ability to modify tunes that were send via email? Do your tunes modify even when or if you sent them to a customer via email?

Thanks

 

No. There shouldn't be any problem with modifying an e-mailed tune. It's no different than any other tune, it's just data. The Predator will adjust just the same. What the problem most likely is, is that there is a timing able in the calibration that will not allow spark timing to go over what's set in it. So when the PCM calcuates actual timing, based on what's input in the main timing table, and then adjusted by any spark adders, if the new value is higher than what's in the max table, it will clip the timing to the value in the max timing table. So when you try to add timing with the Predator, it's adjusting the main timing table, but that new value may be higher than what's allowed, so it's being held to that max value. Make sense?

 

What you would need to do is contact the vendor who did the tune and have them check and/or raise the timing numbers in the max allowed timing table. I'd bet it's exactly as Sal has explained, the max allowed numbers the tuner put in there are lower than what you're trying to get to.

Jody

 

Just a thought: I would think a tuner may be a little "concerned" if we had unlimited abilities to tune what they have already "tweeked".... I can see the flames now about the tuner(s) that "blew-up" my motor with a bad tune,(after we changed it). PLEASE do not get me wrong, I understand many may be able to "bump" things up and understand what is happening and what COULD be the result of it,but others may go in blind.

I also understand that this was a selling point for many,, to tune to our hearts desire! Just my thoughts,, no flame towards the predator OR any tuner OR owner,, just looking at it another way!!!!

 

No flames taken. However, once you do anything to your truck, no warranty. Same goes for "modifying" your tune, then blowing it up. You can't blame that on the tuner. If you are going to restrict tuneability in the name of preventing blown motors, you may as well not have anything outside of stock. Reason I say this is, on the "perfect" tune, a cold brisk winter night comes along, and KABOOM!!!

 

Thanks Jody. It's already been done, but not in the technical way of telling the tuner to raise the max allowed, but just that it wouldn't respond. I then received another tune, and same thing.

 

Sal,
If I understand what you are saying. Then increasing timing might hit a max and not be allowed. I can understand that. And in theory it would allow timing to be decreased.

That's not the case though. No increase, no decrease. Just a locked timing. If you dump the tune then timing is allowed to be changed. I'm also not refering specifically to your tune.

 

There is not enough adjustment on the pred to show any difference . Your looking at less then 1* adjustment on the pred. It sucks but thats the way it is untill Diablo releases a revised update allowing more end user adjustments.
I know this since I had the same problem and called diablo tec and they pretty much said that timing adjustment tables in the pred dont do squat!

 

If timing is set to 18 base. Then it should be able to be adjusted from 16.2 (safe) to 19.8(race fuel or water/meth injection). Either way it would or should show a difference. When I data log I see 18. No matter where I set the timing. Presonally I think that it's a bug. I doubt that many people know about it. After all, why would you want to change timing. For those of you with a Predator try it out. Log your base timing, then decrease timing by 10%, load the tune, and datalog. I'm real curious. I know for fact that 100's of the units won't change.

 

You have got to be kidding me. I make a BOLD statement and I have no responses to it? What's up with that?

 

ttt

 

How's it going?

I'm going with Sal.

If it is a bug, I'm hoping he can (has) solve(d) it. I will say however that he indicated that he has not had the problems changing the tune like you and I have experienced. So, I'm holding out some hope.

Greg

 

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My question also, what's up with that?, meaning why hasn't someone jumped on that staement? I was hoping to really learn something here cause I don't know.