Originally Posted by
Billet Wilson
I know this is an older post, but figured I'd share some info on my 2018 Aisin should someone else find this through search just as I did.
I originally purchased a 21 3500 and had numerous issues stock. The truck overall felt like it was built during the last 15 minutes of a shift right when they found just enough parts laying around to build 1 more truck. Issues popped up by the day but the Aisin specifically had a mind of its own. Hard shifts, delayed shifts, refusal to down shift...you name it. One afternoon the wife and I was traveling on I-70 and just about got ran over by a big rig since the truck would not respond. I had enough and got rid of it.
I started searching around for a 2018 since it was the last year of the 4th Gen and fortunately found a 18 3500 with 725 original miles. I was hesitant at first because it also had an Aisin, but I looked into it deeper since it was basically still a brand new truck. Wow, was I blown away! The transmission shifts smooth, is always in the right gear, and is extremely predictable with zero hesitation! It literally performs in the complete opposite way that the Aisin has a reputation for. It was built 10/17 so it was one of the first 2018 models to come off the line. Im not sure what firmware the transmission has but I guarantee if they all performed this way it would be the go to trans for most. I wish there was a way for someone to copy my tune so others could enjoy the same.
I purchased tunes from DRD right after buying the truck but haven't installed them yet as I wanted to put a few miles on the truck to make sure no issues surfaced. It now have close to 3K miles so Im gearing up to do the delete sometime over the next few weeks. Im deleting for longevity so Im planning to stick with the 30hp tune. Im praying the trans maintains the same performance once the delete is completed.
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