afm
Team Owner
Joined: Jul 2004
Posts: 28,521
Likes: 3,312
From: Hartford WI
AFAIK, the Diablo doesn't leave a trace so I would get a Diablo unit from Diablew with a tune. That would eliminate the AFM engagement by the ECM, give you a better "tip in" without having to use a different TB to get a faster reaction and can firm up your transmission shift. DIABLEW
Moderator emeritus
Joined: Jun 2001
Posts: 18,599
Likes: 3,955
From: Jacksonville Florida BWO Dayton, Cincinnati, Bloomsbury NJ, Cincinnati
2015 C7 of the Year Finalist
Don't you have to back out the tune for the inspection? It still doesn't leave a trace that the ECM has been tuned for 11 months and a couple of weeks so you can pass the test.
Team Owner
Joined: Jul 2004
Posts: 28,521
Likes: 3,312
From: Hartford WI
I don't know about your state but here, I don't have to do anything. As a matter of fact, I just passed emissions with the tune. Only time I back out the tune is when I have the dealer do some module updates.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
5 Best & 5 Worst Corvette Daily Drivers
Joe Kucinski
The Headlights of Every Corvette Generation Explained
Joe Kucinski
5 Best & 5 Most Overrated Corvette Track Packages of All Time!
Joe Kucinski
Every 2027 Corvette Engine Explained
Joe Kucinski
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette
Verdad Gallardo
10 Ugly Corvettes That We Still Kinda Love
Joe Kucinski
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
get a Diablo I3, otherwise a Range.
Team Owner
Joined: Jul 2004
Posts: 28,521
Likes: 3,312
From: Hartford WI
OK, That would be different from my experience. My tune was fine. In fact, when the tech accidently erased the transmission tune, he redid it for free.
Team Owner
Joined: Jul 2004
Posts: 28,521
Likes: 3,312
From: Hartford WI
Although the Diablo can do it without trace, if you want to buy the dongle, I suspect things would be better if you bought it from an authorized dealer not a knock off
Drifting
Joined: Jun 2015
Posts: 1,873
Likes: 695
From: Lagrange KY
I’d recommend the Range device. I’ve used one for years with great results. Get the one from Range itself, not a knockoff brand. It will have their latest version software, and is simply plugged into your OBD port. Can be removed for later use in another vehicle if desired. They can also be found for sale on occasion from other forum members in our classifieds section.
Melting Slicks
Joined: Aug 2017
Posts: 2,518
Likes: 942
From: Fl
Administrator
Joined: Mar 2001
Posts: 368,752
Likes: 24,891
From: In a parallel universe. Currently own 2014 Stingray Coupe.
C7 of the Year - Modified Finalist 2021
MO Events Coordinator
St. Jude Co-Organizer
St. Jude Donor '03 thru '26
NCM Sinkhole Donor
CI 5, 8 & 11 Veteran
Supporting Vendor
Joined: Sep 2009
Posts: 2,144
Likes: 170
From: Central Florida
Melting Slicks
Joined: Aug 2017
Posts: 2,518
Likes: 942
From: Fl