[pits200]

Curious to see the long term effect of this with 450wtq and no timing reduction which probably adds another 50-75wtq to the drivetrain upon shift.

[fmonteiro444]

Originally Posted by WedgePerformance

Yes, just load your flash into TunerPro, load the XDF and change the functions to disable TQ Reduction and Safty Path.

I just checked and mine are already at 02

[WedgePerformance]

Originally Posted by pits200

Curious to see the long term effect of this with 450wtq and no timing reduction which probably adds another 50-75wtq to the drivetrain upon shift.

50 - 75 wtq



Better start looking for a good used transmission..

CAR-PART dot COM people...

Current listings for 03/07 and newer $800 to $2200 US dollars...


I have to say if you're worried about your transmission taking a then you probably should put your car back to stock and go trade it for a hybrid.

[marcvtec]

Originally Posted by WedgePerformance

50 - 75 wtq



Better start looking for a good used transmission..

CAR-PART dot COM people...

Current listings for 03/07 and newer $800 to $2200 US dollars...


I have to say if you're worried about your transmission taking a then you probably should put your car back to stock and go trade it for a hybrid.

holy use of emotes batman lol

[SneakyDeeky]

Originally Posted by marcvtec

holy use of emotes batman lol

lol

[WedgePerformance]

Originally Posted by marcvtec

holy use of emotes batman lol

Yeah, it was early and I was still working on my first cup of coffee.

[WNF_335i]

currently ive been running jb4 w/backend flash and Ive noticed in map 3 when spraying meth there is a postshift bog. I have no experience with ATR but would be willing to give it a shot if disabling tq reduction would do the trick. @WedgePerformance

[WedgePerformance]

Originally Posted by WNF_335i

currently ive been running jb4 w/backend flash and Ive noticed in map 3 when spraying meth there is a postshift bog. I have no experience with ATR but would be willing to give it a shot if disabling tq reduction would do the trick. @WedgePerformance

Just let me know if you need any help getting setup.

[BMWM.D.]

How does this affect shift quality during normal driving? I'd always heard changing those settings wasn't very pleasant for a street car.

[WedgePerformance]

Originally Posted by BMWM.D.

How does this affect shift quality during normal driving? I'd always heard changing those settings wasn't very pleasant for a street car.

In my opinion the change is fine with the Alpina flash. You have no post shift bog so it's right back into the power. I can't provide feedback on the MT cars as I haven't had the chance to see it first hand. I took a friend for a quick ride today and he was very impressed at how quick the shift was and the fact it was right back on the power post shift. He drives a 2012 FBO MT 335.

[AWTT335i]

Originally Posted by WedgePerformance

In my opinion the change is fine with the Alpina flash. You have no post shift bog so it's right back into the power. I can't provide feedback on the MT cars as I haven't had the chance to see it first hand. I took a friend for a quick ride today and he was very impressed at how quick the shift was and the fact it was right back on the power post shift. He drives a 2012 FBO MT 335.

Those settings only affect AT cars.

[BMWM.D.]

Originally Posted by AWTT335i

Those settings only affect AT cars.

I'm aware of that. It' something all manufacturers use these days on automatic trans cars. GM calls it "torque management". I'm just wondering how completely deactivating it feels during normal driving. I know Cobb has recommended not turning it off. Guess it's worth a try.

[WedgePerformance]

Originally Posted by BMWM.D.

I'm aware of that. It' something all manufacturers use these days on automatic trans cars. GM calls it "torque management". I'm just wondering how completely deactivating it feels during normal driving. I know Cobb has recommended not turning it off. Guess it's worth a try.

Like I said, with the Alpina it feels great. D has a soft shift anyway and what little I use it I couldn't tell a difference. But M feels very crisp and at WOT the shifts are off power on power with no lag or post shift bog from torque reduction.

[AWTT335i]

Originally Posted by BMWM.D.

I'm aware of that. It' something all manufacturers use these days on automatic trans cars. GM calls it "torque management". I'm just wondering how completely deactivating it feels during normal driving. I know Cobb has recommended not turning it off. Guess it's worth a try.

I was responding to Wedge. Its easy to turn on and off if you are using Cobb or BBF, not sure if OFT is still doing a full write instead of partial write... so maybe 15-20 minutes of your time.

One thing to keep in mind when disabling this setting is that its easy to introduce knock if your timing target is aggressive post shift (as the change in load is instant). Recently i was tuning an auto 535, we had no issues getting clean 3rd and 4th gear single gear pulls, but once we started logging multiple gear pulls we had major timing corrections post shift (not flatline).

[Msport335]

when monitoring knock, what should we be looking far as far as the logged parameters on the Cobb V2?

[AWTT335i]

Originally Posted by Msport335

when monitoring knock, what should we be looking far as far as the logged parameters on the Cobb V2?

Timing correction channel for cylinders 1-6. Also monitor timing actual for any of the 6 cylinders. If you see timing deviate from requested (in your map for a given load) but no timing correction exists, you know you have bumped into some sort of safety mechanism; charge air temp (CAT), coolant temp, exceeded requested boost/load, torque limit etc etc.

[Msport335]

what about knock voltage itself? is there a safe numerical limit?

[WedgePerformance]

Originally Posted by AWTT335i

I was responding to Wedge. Its easy to turn on and off if you are using Cobb or BBF, not sure if OFT is still doing a full write instead of partial write... so maybe 15-20 minutes of your time.

One thing to keep in mind when disabling this setting is that its easy to introduce knock if your timing target is aggressive post shift (as the change in load is instant). Recently i was tuning an auto 535, we had no issues getting clean 3rd and 4th gear single gear pulls, but once we started logging multiple gear pulls we had major timing corrections post shift (not flatline).

I'm running 100% E85 and I've seen some post shift timing drops to 12 deg but not consistently nor do I get a code for the timing event. It recovers quickly, like 2 tenths of a sec and I'm back up to 15 to 16 deg of timing. It would be nice to know why the DME decided to drop timing, but I run with DTC and a lot of times full traction control on so it could just be TC intervention. I should try logging with TC Off...

[Mike@N54Tuning.com]

Originally Posted by WedgePerformance

I'm running 100% E85 and I've seen some post shift timing drops to 12 deg but not consistently nor do I get a code for the timing event. It recovers quickly, like 2 tenths of a sec and I'm back up to 15 to 16 deg of timing. It would be nice to know why the DME decided to drop timing, but I run with DTC and a lot of times full traction control on so it could just be TC intervention. I should try logging with TC Off...

The problem I've seen on flash tunes is on the IJE0S automatic trans when you short shift around 6200rpm. Timing just nose dives for a second or two regardless of octane on "traditional" back end flash maps. BMS made a special low boost back end flash map to resolve it.

Mike

[WedgePerformance]

Originally Posted by Mike@N54Tuning.com

The problem I've seen on flash tunes is on the IJE0S automatic trans when you short shift around 6200rpm. Timing just nose dives for a second or two regardless of octane on "traditional" back end flash maps. BMS made a special low boost back end flash map to resolve it.

Mike

I don't think Terry's has the disable torque reduction set to 02, but I could be wrong. I would have to look. I just tuned an AT car with RB's using a high load flash on Map6 and the guy said he no longer had any post shift bog. Car make more power at 18psi than its ever made on any other map or flash. He said he was going tomorrow to validate on a dynojet. His pull on Sunday was on a mustang dyno and he made 531 whp which could be a record. I think Rob said the current record is like 534 whp on a dynojet. It would be amazing to see 580 whp on a dynoject, but I'm not holding my breath. We'll see.

[Mike@N54Tuning.com]

Originally Posted by WedgePerformance

I don't think Terry's has the disable torque reduction set to 02, but I could be wrong. I would have to look. I just tuned an AT car with RB's using a high load flash on Map6 and the guy said he no longer had any post shift bog. Car make more power at 18psi than its ever made on any other map or flash. He said he was going tomorrow to validate on a dynojet. His pull on Sunday was on a mustang dyno and he made 531 whp which could be a record. I think Rob said the current record is like 534 whp on a dynojet. It would be amazing to see 580 whp on a dynoject, but I'm not holding my breath. We'll see.

That torque limiter has always been disabled in the BMS flash maps. AFAIK it only applies to part throttle shifting not full throttle shifting BTW.

If you let the car shift at redline then it's less of an issue. With RBs redline shifts are generally OK for performance. So you should not have any issues there. It's stock turbos shifting at 6200rpm where it becomes an issue. They posted a dyno awhile ago showing how much more power you make during a 50-150 pull short shifting. It was pretty amazing.

Highest dynojet RBs I know of is 550whp on a 335is.

PS. If you are shooting for 18.5psi map 7 is a good option. If using meth you would use map 3 with a 65 additive to get to the same target. What is the map 6 boost curve dialed in currently?

Mike

[AWTT335i]

Originally Posted by WedgePerformance

I'm running 100% E85 and I've seen some post shift timing drops to 12 deg but not consistently nor do I get a code for the timing event. It recovers quickly, like 2 tenths of a sec and I'm back up to 15 to 16 deg of timing. It would be nice to know why the DME decided to drop timing, but I run with DTC and a lot of times full traction control on so it could just be TC intervention. I should try logging with TC Off...

With 100% e85 i wouldn't expect it to be much of an issue, but for those with lesser octane its easy to bump into KR post shift. I have the same issue on my 6MT sometimes (clean single gear pull, but lots of KR post shift).

PS, you wont see a code unless things get really messy (not sure what the threshold is for the glow ignition code). You really need to see the global picture of all cylinders and what cylinders the DME is pulling timing from to get a feel for how things are holding up post shift. Unfortunately you are only going to see that if you are running Cobb.