10mm_

Anybody ever dyno a Diablew tune?

I know a few people have posted results from the canned Diablo tunes but I couldn't find anyone who dyno'd Lew's tune.

chefcg1

curious as well as I'm interested in the gains over the canned tune.

06MonteSS

I've had people report dyno results to me in the past with gains of 12-30 hp... depending on fuel used, mods, weather, etc...

10mm_

On a C7 or is that like in general on cars you tune?

06MonteSS

Vette's in general...

don't think I've had any C7-specific users report...

The last C7 I did a few days ago, owner had this to say: "Got the tune installed on the C7 last night and finally had a chance to take it out and drive it today. WOW!!! It's like a completely different car! ...feels more like a Z06 than a regular Stingray. I don't know what it is you do, but your custom tune makes a night and day difference in the car, even over the Diablo 93 Octane tune which I thought was a pretty significant upgrade over stock. Needless to say I am very happy with the results! Thanks again!"

which pretty much mirrors other statements I've gotten from all other c7 owners I've done tunes for...

10mm_

Yep I saw him make the same comment somewhere on the board as well.


I have no doubt that it will feel a lot better, but if I am going to commit to (possibly) throwing my warranty away I want the 1/4 mile gains to be worth it, that's all. I haven't found any back to back passes or dyno pulls comparing stock to your tune or to the canned tune so I figured I would make a thread.

06MonteSS

MikeLsx

once again. diablo tunes/diablew lack dyno reports.

people say the tunes feel great. but i would rather have facts.

cobra502

Lew,
I know you’re going to hate me, this but is the God’s awful truth. When you decided not to help me tuning for E85, saying you never used it and never will use it, I had no alternative but to go with someone else. This time around I chose to tune on a dyno instead email tuning. To make a long story short we first did dynos on the OEM tune from the factory vs the last tune you did for me. The results were your tune was 413.66hp/411.25tq and the stock tune was 417.37hp/418.40tq. Then the tuner retuned with his changes and got 424.26hp/424.96tq. I guess all email tunes are not equal.

I’m not trying to “dis” you, I just wanted to tell my story and what I have found out about email tuning for the forum. I too (using the seat of the pants test) thought I was getting somewhere. You don’t really know what you have until you put it on a dyno. There was a significant difference between your tune and theirs (seat of the pants and otherwise). I guess this your first "C7-specific users report...".

By the way, I picked up another 23hp/20tq with E85 (actually E65 for the test) and an E85 tune.

.

06MonteSS

I don't hate you man... There are no e85 tables in the tune file with diablos software, therefore, there is nothing I can do for e85 period. Those are not flex fuel vehicles, therefore there are no e85 specific tables in the tune file to do anything with. So no, I do not tune these cars for e85, don't know how e85 runs/affects things in these cars, so can't do it...

And no, I don't use e85,theres none of that corn juice here in CT haha, so I don't even have it to run in anything to test things out, so no, I don't use it and I don't tune for it.

Glad you were able to find someone that could for you though.

1BADLS3

There is far more to tunes than just HP gains. Driveabilty, throttle response, shifting (in ATs) etc.

cobra502

Thanks Lew. You're absolutely right about Diablo's software, thats why I had to go to HP Tuners. It was fun while it lasted.

.

MikeLsx

yes i understand that, i am pretty big on getting my car tuned. I use to drive a heavily modded LS3 camaro.

My problem is that diablo says the tune is worth 30WHP, but we as a forum lack real before and after dyno runs.

Heres the thing. My local shop (livernois motorsport) with a custom tuned C7 were able to make 30WHP over stock. I trust them, and therefore i know its possible to get this gains.

for now i will want and see.

1BADLS3

Yes, 30hp is a bit "optimistic".

robert miller

Man the tuner did you a favor on not tuning your car. He could have done something really bad.

I done know him are you but can tell you if he dont know tuning with E-85 it was good he didnt. 99% of these guys out here at first got a tune from someone car then just started playing around chging this & that on you motor & call it a tune.

We all know in here no one tune will work the same on two diff cars even having the same parts in it. I have been taking by so many so called tuners it not even funny.

But am glad you got your car working good but sounds like you had someone that got you what you wanted.

robert miller

Sound like good numbers from a custom tune.. We all know that the factory will leave HP on the table... Robert

10mm_

So the only Dyno result we have from a diablew tune is that it made 4 less hp than stock?

Mike@DiabloSport

Cant look too far into that without seeing the curves...were there gains below peak power?
Was there evidence of knock up top?
Was there any logging done on the dyno?

I've said it a million times, using a dyno just to get numbers is a waste of time...

06MonteSS

yeah, I never saw any logs from any dyno pulls, so couldn't tell ya.. I got this info all after the fact, after it was already re-done by someone else.. so I have no idea what it looked like on the dyno..

10mm_

I would like to see the graphs too, but I still have yet to see an independent dyno test or 1/4 mile comparison look good for diablo.


Isn't this a really popular tune for C7's? How come we don't see more real world test results? Maybe most of the people who actually race end up with HPT or EFI Live....