Hi,
I've had Dinan S2 on my 2013 550ix since it was new. I now have 2500 miles. I got a Bavarian Technic cable so I could do some logging and confirm it was performing to spec. My reflash was done at BMW Gallery in Norwood, MA, same place as Alextremo, so I figured I would get similar results.
I've had modified cars for over a decade, but this is the first time I've logged with a PC, so I'm still figuring it out. This is also my first auto, and the kickdown is pissing me off, esp when I want it to stay in 3rd or 4th at 3000 RPM while mashing the throttle.
The cliff notes are that I'm making less boost, 12.5 or so PSI, compared to 14+ for Alextremo. I seem to have more timing, about 15+ degrees vs 11. Not sure if the tune is a little different on the 2013 model? I've seen other users post that they are seeing ~10-11psi vs 8-9 stock. I think this was CTSoxFan? He dynoed 400+ WHP on a Mustang dyno. So, it's good that it appears to be more boost than stock, but why isn't it as much as Alextremo? Throttle is showing ~80%, since I have to avoid the kickdown to get a longer pull in one gear.
I have no dyno yet, but I may do this at the shop that tuned my Evo. They also have a Mustang "heartbreaker". My only perf measurement has been the PocketDyno iphone app. I run consistent 4.4x seconds 0-60 in Sport+, manual mode, with brake torquing and letting the car shift near redline.
Images are below. Regarding the BT software, I'm logging Ambient Pressure, Intake pressure, RPM, Throttle, timing, and speed. I dump the data to Excel and calculate boost as (intake pressure (in hPA) - ambient pressure (in hPA)) * 0.014503773773022. With refresh set to "fast", I'm getting 4 - 5 reading per second. There are two sets of intake manifold pressures, I guess for each bank? Not sure if it matters which one I use, I haven't experimented too much yet.
Any thoughts or tips/feedback regarding the numbers or BT software?
2 of my pulls
pull from another Dinan S2, I believe it is 550i with 6speed.
I've had Dinan S2 on my 2013 550ix since it was new. I now have 2500 miles. I got a Bavarian Technic cable so I could do some logging and confirm it was performing to spec. My reflash was done at BMW Gallery in Norwood, MA, same place as Alextremo, so I figured I would get similar results.
I've had modified cars for over a decade, but this is the first time I've logged with a PC, so I'm still figuring it out. This is also my first auto, and the kickdown is pissing me off, esp when I want it to stay in 3rd or 4th at 3000 RPM while mashing the throttle.
The cliff notes are that I'm making less boost, 12.5 or so PSI, compared to 14+ for Alextremo. I seem to have more timing, about 15+ degrees vs 11. Not sure if the tune is a little different on the 2013 model? I've seen other users post that they are seeing ~10-11psi vs 8-9 stock. I think this was CTSoxFan? He dynoed 400+ WHP on a Mustang dyno. So, it's good that it appears to be more boost than stock, but why isn't it as much as Alextremo? Throttle is showing ~80%, since I have to avoid the kickdown to get a longer pull in one gear.
I have no dyno yet, but I may do this at the shop that tuned my Evo. They also have a Mustang "heartbreaker". My only perf measurement has been the PocketDyno iphone app. I run consistent 4.4x seconds 0-60 in Sport+, manual mode, with brake torquing and letting the car shift near redline.
Images are below. Regarding the BT software, I'm logging Ambient Pressure, Intake pressure, RPM, Throttle, timing, and speed. I dump the data to Excel and calculate boost as (intake pressure (in hPA) - ambient pressure (in hPA)) * 0.014503773773022. With refresh set to "fast", I'm getting 4 - 5 reading per second. There are two sets of intake manifold pressures, I guess for each bank? Not sure if it matters which one I use, I haven't experimented too much yet.
Any thoughts or tips/feedback regarding the numbers or BT software?
2 of my pulls
pull from another Dinan S2, I believe it is 550i with 6speed.