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View GarageAfter buying the Diablo Trinity and letting it update my car's CAL ID from 05187899AE to 05187899AG so it would marry to the car, I had a pronounced lag in throttle response in 4th gear (some in 5th and 6th as well). See this thread for throttle lag details. After lots of research I found this was intentional by Dodge as part of a "drivability" update to the PCM in TSB 18-021-09a. I confirmed with Dodge Customer Service that the TSB does infact update the PCM to the AG CAL which has the throttle lag bug in it. They also confirmed this was intentional, which baffles me as to how that can be a drivability "improvement". I have literally done everything possible to get some attention on this problem but it's just not gonna happen. I even went through my local dealer who I have a VERY good relationship with and who sponsors ChallengerFest each year. They couldn't even get Dodge to look in to it and were told "it's normal". Diablo says they're busy with 2012 and up stuff.
AJ worked on it for several months but had to move on to other things. I talked to him about having someone else look in to it a bit more and he agreed that was fine by him as long as they started with their own base tune for the car. So no drama or anything like that I'm always up front with everybody on what I wanna do. AJ even offered to help if we had questions. AJ's a stand up guy for sure as he could have certainly gone a different direction there.
So I contacted Mike at OST as he was a vendor on this forum and I'd seen some good things from him. I let Mike know the issue, sent him some screen shots of the problem, and links to the various forum posts on all the forums, CT, here, Diablo, Z forums, Youtube, etc of all the different people having the issue. He actually went and read all the threads and ended up giving me a call to discuss.
After an informative conversation, I PayPal'd him the tuning fee to tune the car. He made it very clear he could not guarantee he could fix the issue but seemed legitimately interested in figuring it out. He sent me a base tune, and the car started right up and ran great. I had one small stall issue, which he fixed on the 2nd revision. So far no throttle lag. So we kept going. By the 4th revision we were starting to turn up the timing to get the tune finalized. The AFR had already been stabilized and things were going very well. He'd send a revision, I'd data log and mail the log to him, and I'd usually have a new tune revision in my e-mail by the next day. I was very impressed with the quality of the tunes and the turn around time it took to get them which was usually less than 24 hours. Mike was very methodical in his tuning methods changing one thing at a time and sending me notes in the e-mail with exactly what was changed so we knew where we were at. At one point I installed my DS 1000HP drive shaft and mixed up the front O2 sensors and Mike noticed it in the logs and told me he thought they were swapped 
sure enough he was right!
On the 5th revision I went for a nice long drive to finalize WOT tuning (Mike had me go to a test track, ahem, and run it out shut her down and pull plugs and send him pictures). Damn, if the throttle lag didn't come back. We were both very disappointed as I could hear it in his voice when I called him. Over the next month Mike sent me 15 tunes (20 tunes in all!) to try to solve the problem (one even on Christmas day!), made calls to Diablo, contacts at other places that may have seen this, etc. Mike was relentless. In the end, he learned he could soften the throttle input to sort of mask the issue which made it much better, but due to the car being a 6 speed I could feel the change pretty obviously. In an automatic car this is likely a good fix for the problem until Diablo either lets the AE cal work in the Trinity, or locates the table that cause this issue and adds it to CMR software. Mike is still persuing both solutions with Diablo.
Mike still wanted to have a workable tune for me, so we decided to go back to the AE CAL and he has started writing me a tune on that. I'm on my second revision and it's really good. Timing isn't finalized, but cold start, AFR, drivability, etc are all very good. He always does timing last to keep an eye on things and to make sure the motor is happy. Mike's tuning method is one that makes the car work with the modifications installed, which made perfect sense to me. The injectors get rescaled, etc, so the AFR he commands is what the car gets. Pretty neat stuff and makes adjustments easier once the baseline is determined which we had in 3 revisions.
I'm posting this so folks that don't want to drive all over the place know there is someone out there that can tune a reasonably complex build via e-mail as long as you have the ability to get him data logs. Mike's fast and efficient and very good at what he does. We're going to continue on and finalize the AE cal tune and I'll post up a final post in this thread letting everyone know how we ended up, but so far I'm very happy.
Mike also has the ability to remote control a lap top in a car that's on a dyno, so if you want to go that route he can do that too. He works in IT like I do, and is very proficient with technology.
He can be reached at: http://www.ostdyno.com/ if anyone is looking for a good e-mail tuning solution.
UPDATE: Here is a TTDYNO from a 4th gear pull with Mike's 93 Octane Tune. Needless to say I'm happy!
This is strictly from e-mail tuning to boot!
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I've heard the exact same thing from every person I've ever talked to that has used Mike and they weren't just head/cam cars. It was an easy choice to make the switch to him for my new motor.
