ACD Tuning Options - USDM CT9As, Read!
Aug 27, 2016, 10:43 AM
#436
I also have the er acd tune and the wier 12plate rear diff. I am installing the aem vdm for track mapping and lap analysis. I will toss in the old computer for my first session and the reflash. I have a track day scheduled for October and I might hit subifest in September. To much work right now finding it hard to get to the track.
On the street I am very happy with the flash. Freeway on ramps are much faster now
. My alignment is set to understeer so this helped to give the car a more nutural feel. Next corner balance and align I will set the car up nutural and tweak bump and rebound and sway bar settings.
I am not the best road racer so I like a little understeer but I can tell it hurts my lap times.
On the street I am very happy with the flash. Freeway on ramps are much faster now
. My alignment is set to understeer so this helped to give the car a more nutural feel. Next corner balance and align I will set the car up nutural and tweak bump and rebound and sway bar settings.I am not the best road racer so I like a little understeer but I can tell it hurts my lap times.
Aug 29, 2016, 06:47 AM
#438
I may purchase one for sure if I get my hands on a spare ACD ECU - I'm very happy with my ACD tune though, and I finally got my setup to stop oversteering like crazy, so I'm trying to leave the car alone for a while lol
The following users liked this post:
MrAWD (Aug 31, 2016)
Aug 31, 2016, 08:30 AM
#443
Evo X remapping done in the UK: http://www.evoxforums.com/forums/showthread.php?t=59870
was pretty close, just a few minor tweaks with shocks and tire pressures. I think the tires breaking in played a big role as well.
My set up is 8/10, ohlins coilovers, shocks at 5 clicks all around, tanabe FSB, WL RSB on middle for autox, soft for track, a few WL bushings, and my ACD on "Gravel" which is the middle setting between street and track on ER's "light" ACD tune (customized for my usage), and Cusco 1.5way
Car genuinely feels amazing. Car doesn't push, at least with my driving, corner entry is amazing, and the set up really accentuates the car's ability to power out of corners.
Aug 31, 2016, 03:02 PM
#444
EvoM Guru
iTrader: (1)
Word of caution:
If you have a brand new tcase, or rear diff, give them about 3,000-5,000 miles of break in before running them with an ACD tune (per Jon at TRE). I spent a lot of money figuring this out last year. ACD tune was wiping out new gear sets(gears that had not been broken in) in about 1,500 miles. I was broke, so I bough a used 50k mile tcase that has been going strong for 4500 miles on the ACD tune with 2 track days as well. So it only effects new gears that have not properly bedded in.
If you have a brand new tcase, or rear diff, give them about 3,000-5,000 miles of break in before running them with an ACD tune (per Jon at TRE). I spent a lot of money figuring this out last year. ACD tune was wiping out new gear sets(gears that had not been broken in) in about 1,500 miles. I was broke, so I bough a used 50k mile tcase that has been going strong for 4500 miles on the ACD tune with 2 track days as well. So it only effects new gears that have not properly bedded in.
Aug 31, 2016, 09:29 PM
#446
Word of caution:
If you have a brand new tcase, or rear diff, give them about 3,000-5,000 miles of break in before running them with an ACD tune (per Jon at TRE). I spent a lot of money figuring this out last year. ACD tune was wiping out new gear sets(gears that had not been broken in) in about 1,500 miles. I was broke, so I bough a used 50k mile tcase that has been going strong for 4500 miles on the ACD tune with 2 track days as well. So it only effects new gears that have not properly bedded in.
If you have a brand new tcase, or rear diff, give them about 3,000-5,000 miles of break in before running them with an ACD tune (per Jon at TRE). I spent a lot of money figuring this out last year. ACD tune was wiping out new gear sets(gears that had not been broken in) in about 1,500 miles. I was broke, so I bough a used 50k mile tcase that has been going strong for 4500 miles on the ACD tune with 2 track days as well. So it only effects new gears that have not properly bedded in.
Never heard this before, maybe skip the tune then if it puts excess stress on parts
Aug 31, 2016, 09:37 PM
#447
i've been running an ACD tune for 6 years now with no adverse effects. I'm surprised by the anecdote, but i don't think it adds any more wear than anything else. motor, drivetrain, all pushing ~50 more whp than stock. i don't see how wear could be so significant, it's using the same pump to lock and unlock, just at different rates and strengths. in general, you need to break in a drivetrain part very gently, and let it go through several heat cycles
Sep 1, 2016, 08:20 AM
#448
EvoM Guru
iTrader: (1)
Like I said........NEW gears. When they haven't been bedded in, they're extremely sensitive to the extra load, this is why every drivetrain shop tells you to do at least a 500 mile break in period of taking it easy. From talking to Jon at TRE, he said gears are fairly good to go at the 500ish mile mark, but the point at which you really see a well worn in machine finish wear pattern from the tooth-tooth contact is in the 3,000-5,000 mile range, and he would wait until that point to run a tuned ACD.
If you thought the ACD tune didn't load the tcase and rear diff more, idk what you're smoking. It's locking the front and rear axles together more. In my car, if I'm in track mode, the car binds up and bucks a little bit when making tight low speed turn (like in a parking lot). But like I said, since I was tired of spending money, my car has a used 75k stock tcase in it right now, which has gone 5k miles and 2 track days without issues, WITH the ACD tune.
I'm NOT telling you to no buy an ACD tune. I AM telling you that if you get a tcase or rear diff rebuild to put the ACD back to stock for a few thousand miles to let the gears break in.
If you thought the ACD tune didn't load the tcase and rear diff more, idk what you're smoking. It's locking the front and rear axles together more. In my car, if I'm in track mode, the car binds up and bucks a little bit when making tight low speed turn (like in a parking lot). But like I said, since I was tired of spending money, my car has a used 75k stock tcase in it right now, which has gone 5k miles and 2 track days without issues, WITH the ACD tune.
I'm NOT telling you to no buy an ACD tune. I AM telling you that if you get a tcase or rear diff rebuild to put the ACD back to stock for a few thousand miles to let the gears break in.
The following users liked this post:
kyoo (Sep 1, 2016)
Sep 1, 2016, 11:15 AM
#449
Oh in that case I will get it done
I was just being a little dramatic like some on here. I've always, thought about getting this mod done through Tom @ TScomp though I know most go with ER
I especially liked the size 50 font in bold and italic. No worries though
Hey letsgetthisdone, that last comment to put the acd back to stock, couldn't you just leave it in the normal settings? I believe Tom's has the three normal settings and 3 modified ones so you could just click back to norm if you had a rebuild, I would assume.
Thanks
I was just being a little dramatic like some on here. I've always, thought about getting this mod done through Tom @ TScomp though I know most go with ER
I especially liked the size 50 font in bold and italic. No worries though
Hey letsgetthisdone, that last comment to put the acd back to stock, couldn't you just leave it in the normal settings? I believe Tom's has the three normal settings and 3 modified ones so you could just click back to norm if you had a rebuild, I would assume.
Thanks
Sep 1, 2016, 01:09 PM
#450
EvoM Guru
iTrader: (1)
The English tune doesn't have stock settings on it anymore. But you can get a stock ACD ECU off of ebay for $40-$50...
