Jcbarr25

This is true for the canned tunes. If you just wanted the canned tunes, there is no need to datalog anything. But for a CUSTOM tune, made to your car, Lew or any other tuner would need to see specific parameters and numbers to adjust it properly. It is thru the datalog that the tuners get these numbers. Most ppl/shops don't know about this.

billyboy47

It's the computer part of the set up.

Kouasupra

Find a niece or nephew who's good with computers. If I was closer I can help with this. It's a easy process.

PDsVettes

Biillyboy, I sent you a PM (see post #283) with some simple instructions on how to do the data logging and how to get the files from the inTune to the computer and vice versa.

I realize some people are technically challenged. It is probably in your best interest to send the inTune back to Lew and get a local tuner or Chuck at COW to do a tune for you.

Good luck.

billyboy47

i figured as much. i installed it again this morning and i'll wait until i drive some before plugging into the computer so it can process the #'s or whatever it's supposed to do. then i'll contact Lew and take it from there. thanks for your input.

billyboy47

got them, thank you. i just installed again this morning, figure to give it another shot instead of giving up like a wuss boy. just put 80 miles on the car, drive it again soon and contact Lew. again, thanks for your help.

PDsVettes

That's the spirit. Don't let those darn computers kick your butt. Once you get this done, you'll be a happy camper. When you do your first data log, pay attention to the RPM window Lew gave. I just used the paddle shift and held it in 4th gear, maybe 5th, I can't remember. When you do your WOT data log, be careful so that it doesn't get away from you.

billyboy47

the thing that confuses me is if you read the op's first post dated 10/2012 he claims that upon the install his car is totally different right from the beginning. i don't really notice that much of a difference at all after the initial tune. he makes it sound as if he had a COW boost installed the way he carries on. am i missing something here?

PDsVettes

I noticed an increase in throttle response and a little in the tranny firmness and shifts seemed to be a little quicker after the Diablo tune was installed. I noticed the most difference once Lew did his thing to the tune. It scared me a little when I did the WOT data log. I had nailed it when stock, but the rear end really gets loose now. Just be ready for it.

Remember, statements about increased hp without dyno numbers or ET is very subjective.

billyboy47

just one more question and promise not to be a pain. what exactly is the process or procedure of the WOT data log? thanks again for being a very big help.

Jcbarr25

Lew will probably send you an email with the direction for WOT.

Jcbarr25

Where did you do your WOT runs?? how many gears did you go thru??

PDsVettes

These are the directions that Lew sent me for the WOT:

"When doing WOT logs, you would log the same parameters as you did for the steady cruise log. To get a good WOT log, get a nice warm day, and you want to start from a dead stop if you can, or at least from as slow of a roll as possible. Then get a good launch - roll into it quick, but so you don't have a lot of wheel spin, and as you get up to a little more speed, then just GET ON IT!! Pretend you're on a drag-strip racing someone - get a good launch - then hammer-down and go for as long as you can, through as many gears as you can. BUT, BE SAFE!! And you only need to do one good WOT run in the log."

I live in a rural setting so I just found a half mile stretch of straight road without any traffic, did a rolling start from 15 mph in S mode (no paddle shift) and accelerated quite hard to about 100 mph and then came down to 60 mph.

You need to get the inTune setup to data log prior to beginning this run. I hit the RECORD button right before I got to 15 mph, got my eyes back on the road, did the WOT run and slowed to 60 mph then stopped the recording. I wanted to be safe and not be distracted while going at a high rate of speed. Then when I got home I downloaded the WOT log file to the computer and sent that single file to Lew via email. He sent me back a final ecm tune and that was it. The WOT is done so that Lew can adjust the WOT fueling/timing to reduce knock retard during a WOT situation.

When Lew sends you the custom tune files back to you, they will be named as "Your Name_ECM_1.grg" and the same configuration for the TCM file. Then when you upload that tune into the inTune, that file name is changed to "ECM_XXXX_LastTuneWritten.grg" and the file name with your name disappears. For each subsequent file you get from Lew, the number after ECM or TCM increases by one. I initially thought that I messed up when uploading the first files as I couldn't find the files with my name. I found out about the name changing from reading the blogs on the Diablosport website.

billyboy47

THANKS GUY'S.

Z0HS1CK

That's interesting.

Question though. If lew only needs one WOT run, why do you have to start from a dead stop/slow roll?

It would be much easier for a person who has to log the WOT run find a open strip/small highway part, say in 2nd gear, hit the record, do the WOT, then that would be that. No??

I am not sure on how the WOT works.

Plus wouldn't the "numbers" be totally different going WOT in 1st gear, and then going WOT in 4th gear etc???

PDsVettes

I just followed Lew's directions and it worked out great. When you nail it from 15 to 100 mph, it takes less than 10 seconds. As I said, I just left in AUTO and let the tcm do the shifting. RPM's got up to 6K then dropped to 4.5K then climbed to about 5.1k before I let off. I ran the WOT log run in the Diablo DataViewer and the knock retard flashed some positive numbers a briefly on two separate occasions. I think that is what he was looking at so that he could make some adjustments if needed.

I don't really know anything about tuning. That's why I paid Lew. Maybe he will chime in and explain the rational.

I'm just extremely happy with the way it all turned out. Now, I can cruise at 70 mph, push on the accelerator slightly, and it will downshift one gear. If I press further, it seems to drop two gears, but the throttle movement is no where near what it was when stock. Plus, if you gradually accelerated, without pushing enough to make it downshift, you will still increase your speed. When it was stock, if you did that, you got nothing. That's why I was so disappointed after I bought my car, it didn't drive like I thought a Corvette should. Now it does.

Mike@DiabloSport

Thanks guys

0MarylandSpeed

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sammalone

Chuck,

I've had a trifecta tune (e85, e47, etc.) on other cars in the past and loved the tunes.

Now, I've got two cars I was thinking about tuning (2008 base; 2010 GS). Any benefit or multi-car discounts?