Mustang dyno is better for tuning than Dynojet is, Dynojet just gives a higher more flattering number. If you tune on a Dynojet you typically have to do some road tuning as well (which is always good) to get a balanced tune.

Just had our Nismo tuned at HP Logic in WPB, FL and it drives better than stock now. I heard folks rave about the "drivability improvement" but it really is great. Got a UpRev flash/custom dyno tune for $550 plus tax.

I would have done the custom tune weeks ago but I had/have been on the fence just because I wasn't sure if the gains would have been significant on the Nismo and I am waiting to install my M370; moreover, I was hoping that the VEHL would have been cracked by now. What specific improvements from the tune of your Z are you referring to boss?

Good to know. Thanks for all the info everyone...

Does this void the warrantee?

It doesn't as long as the dealer is not aware of it. With UpRev, you have 5 different maps and can flash the car back to stock prior to bringing it in for service.

How easy is it to flash back to stock? Is that something that the tune shop would do?

The tune shop can easily do it. With UpRev, you purchase a license and can revert the car whenever granted that you have the software. I don't have the specifics of the software - others can chime in. Before getting your car done and once you purchase the UpRev license, you can let the tuner know that you would like to be able to flash your car whenever, he should be able to provide you with all you need. No need to be charged for it every time you flash the car... just proceed with caution.

interesting...

You will find that no one will give you a straight answer. Technically, part of your warranty, in this case could be the engine/ecu, could be voided if a dealer can prove that an UpRev tune caused the damage. The warranty for the rest of the car would remain intact. Fortunately, or unfortunately depending on how you look at it, most dealer techs aren't all that perceptive to these thing. They will however, look for anything and everything different from OEM to lay blame on You.

From UpRev Site
As far as possible damage caused by a tune, I'm a complete noob. I've heard horror stories with improper tuning on force induction cars blowing up engines, but that's an entirely different animal all together. The UpRev tune usually keeps the settings within a safe parameter.

This is why I will likely wait until my warranty ends to do this. I purchased an extended warranty and feel it would be a waste should the unfortunate happen. The Dealership is enough of a headache for simple warranty work.

We netted +6 whp on the mustang dyno w/the tune (around +10 on a dynojet), but while that sounds sad, the car drives completely different now, best way to describe it is like the car is awake and responsive now, no delay when hitting the gas, no flat spots in the torque curve, just better, pulls really hard now. Also, Jack Cecil, the tuner, raised our redline to 7900 and the car was pulling strong all the way to 7900 which was surprising.

Afaik, only GTM is working on cracking the VVEL control, not sure how that would "mesh" with an UpRev tune but I'd guess you'd need both. Custom dyno retunes at HP Logic are only $195 so it's not a big deal to come back and do it again as I add mods (I'm also on the fence about the M370).

In a word, yes. You have to consider it this way and just hope that whatever dealer you go to is nice. Their consult III will be able to tell that your ECU has been flashed, even if you are running the stock map iirc.

I'm just wondering how the Magnuson–Moss act would classify something like this. Likely the ECU, but could the entire drivetrain be effected in a worst case scenario?

ECU and potentially any device it controls including the engine and automatic transmission (worst case).

We find honesty to be the best practice if a problem comes up. The dealer is willing to work with you more. The dealer is usually more concerned with physical things, like super chargers on auto cars, than tunes in the ECU.

On the dyno discussion, at dyno is simply a tool. Each one reads a bit differently. The technology used in each brand is different. So its impossible to compare lets say a Dynojet or a Mustang and a Mustang to a Dyno Dynamics. As a customer, the only thing that is important is the gains before and after the tune, and the ability to get at cells while tune, so that no street tuning is needed. These dynos are called steady state or load bearing dynos. Those are the machines you want to get on.

Hi Pelican,
I am new at this .I live in Shelton CT.I would like to know where in CT the pro tuner is located you were talking about.