I have been hesitant to post this because I abandoned tuning my vehicle due to driveability issues. In short, any SCT based tune (haven't tried others so it could be any tune) causes my vehicle to have a significant stutter at lower rpm's when under load. I should also note that the tunes were fine on flat S FL roads. However, I live in the mountains which means my car is under load 50% of the time.
That being said, while visiting my parents in South FL, I decided to visit the track near them and see how it ran with AJP's unfinished tune. This tune was only at revision number 2 I believe. It had been a long time since I ran at the track and I had never really tried launching the MKS, so it took me a few tries to get it right.
Mods - AJP 3 bar tune, EPP catted downpipes, K&N drop in filter
Conditions - 93 Shell V-Power fuel, approx. 80 degrees, near sea level in S FL, heavy MKS with all options (chrome 20's, panoramic roof, etc, and cheap, but new Uniroyal tires
Run #1 - Launched at 1900 rpm, slight bog
Run #2 - Launched at 2400 rpm and spun which kicked in stability control
Run #3 - Launched at 2200 rpm. No spinning and decently in boost. Sadly the tracks printer was having issues. 60' was 1.885, but it's too hard to read for it to show on scan.
Overall, I'm really impressed with AJP's tune. I'm certain that, in a lighter SHO with a finished tune, 12.50's are completely possible. That's with really nothing more than a tune. I doubt the catted downpipes or K&N filter are making much of a difference. It's mostly all in the tune.
Sadly, I didn't even think to datalog the runs. It felt like it was retarding timing or reducing boost at the top end. Just wasn't pulling hard up top and the 106 mph trap speed kind of shows that. Granted, it's also a heavy, not overly aerodynamic car, running on straight pump gas with an unfinished tune.
Thanks AJP! Sorry that I abandoned the tuning. My hope is still that something breaks and the dealer will solve the stutter so I can get back to modding this car.
That being said, while visiting my parents in South FL, I decided to visit the track near them and see how it ran with AJP's unfinished tune. This tune was only at revision number 2 I believe. It had been a long time since I ran at the track and I had never really tried launching the MKS, so it took me a few tries to get it right.
Mods - AJP 3 bar tune, EPP catted downpipes, K&N drop in filter
Conditions - 93 Shell V-Power fuel, approx. 80 degrees, near sea level in S FL, heavy MKS with all options (chrome 20's, panoramic roof, etc, and cheap, but new Uniroyal tires
Run #1 - Launched at 1900 rpm, slight bog
Run #2 - Launched at 2400 rpm and spun which kicked in stability control
Run #3 - Launched at 2200 rpm. No spinning and decently in boost. Sadly the tracks printer was having issues. 60' was 1.885, but it's too hard to read for it to show on scan.
Overall, I'm really impressed with AJP's tune. I'm certain that, in a lighter SHO with a finished tune, 12.50's are completely possible. That's with really nothing more than a tune. I doubt the catted downpipes or K&N filter are making much of a difference. It's mostly all in the tune.
Sadly, I didn't even think to datalog the runs. It felt like it was retarding timing or reducing boost at the top end. Just wasn't pulling hard up top and the 106 mph trap speed kind of shows that. Granted, it's also a heavy, not overly aerodynamic car, running on straight pump gas with an unfinished tune.
Thanks AJP! Sorry that I abandoned the tuning. My hope is still that something breaks and the dealer will solve the stutter so I can get back to modding this car.
