[Andym3100k]

Hi guys, any update on how we can reprogram our DCT to hold more power yes I mean much much more power! The Z4 E89 has SSP clutch kit & on 27psi the transmission will start to slip, is it bcos I didn't upload any file to help on the DCT or I'm just over boosting it beyond what the clutch plate can handle?

My mod as JB4 Pure S2, E30 fuel, MHD E85 Hybrid flash, Port injection, Fuel it S2 LPFP, custom hot charge pipe, Vtt inlet, DP, full exhaust, peak 25psi taper down to 23psi, transmission will slip on 27psi down to 26. There is no way I can make my car run faster if the transmission is not holding well.

Is there already a build in DCT map that can handle more TQ in some of the flash tune like MHD or COBB or JB4?

Pls advice, thanks.

Andy

[BQTuning]

Originally Posted by Andym3100k

Hi guys, any update on how we can reprogram our DCT to hold more power yes I mean much much more power! The Z4 E89 has SSP clutch kit & on 27psi the transmission will start to slip, is it bcos I didn't upload any file to help on the DCT or I'm just over boosting it beyond what the clutch plate can handle?

My mod as JB4 Pure S2, E30 fuel, MHD E85 Hybrid flash, Port injection, Fuel it S2 LPFP, custom hot charge pipe, Vtt inlet, DP, full exhaust, peak 25psi taper down to 23psi, transmission will slip on 27psi down to 26. There is no way I can make my car run faster if the transmission is not holding well.

Is there already a build in DCT map that can handle more TQ in some of the flash tune like MHD or COBB or JB4?

Pls advice, thanks.

Andy

Then something is wrong, I have a DCT 335is with the same transmission pushing 24 PSI on stock clutches and they have not once slipped and I tune with lots of torque. The only thing holding us back is fueling which is being resolved soon. I would advise you take this up with Terry. I don't want to say anything else further as it would be biased

[bigdnno98]

Originally Posted by BuraQ

Then something is wrong, I have a DCT 335is with the same transmission pushing 24 PSI on stock clutches and they have not once slipped and I tune with lots of torque. The only thing holding us back is fueling which is being resolved soon. I would advise you take this up with Terry. I don't want to say anything else further as it would be biased

This is good news as I'm about to start modding my new toy. My last 335i made +500tq on stock turbos. I plan on a similar setup for this car. Does the 11.1 1/4mi DCT car have upgraded clutch packs? It's stock DCT isn't it?

[BQTuning]

Originally Posted by bigdnno98

This is good news as I'm about to start modding my new toy. My last 335i made +500tq on stock turbos. I plan on a similar setup for this car. Does the 11.1 1/4mi DCT car have upgraded clutch packs? It's stock DCT isn't it?

I think he had upgraded Dudson clutches from what I heard if we are referencing the same person I have in mind who did a M3 conversion on his suspension

[bigdnno98]

Originally Posted by BuraQ

I think he had upgraded Dudson clutches from what I heard if we are referencing the same person I have in mind who did a M3 conversion on his suspension

Yup. That person.

[Redbmwm33]

I definitely recommend buraq if you want to make high horsepower with a DCT car safely. He has worked his magic even at higher boost levels. I have yet to experience any slippage.

[Andym3100k]

Originally Posted by BuraQ

Then something is wrong, I have a DCT 335is with the same transmission pushing 24 PSI on stock clutches and they have not once slipped and I tune with lots of torque. The only thing holding us back is fueling which is being resolved soon. I would advise you take this up with Terry. I don't want to say anything else further as it would be biased

Oh so the cause of the slippage can be from the tune?

[BQTuning]

Originally Posted by Andym3100k

Oh so the cause of the slippage can be from the tune?

Its either the tune or abuse or both. The stock DCT clutches can hold 850nm of torque . After this point is where its expected to start slipping for a clutch that has not been abused and the owner did not continue to ride the slippage.

Most of these reported clutch slippage issue was tune related, abuse, or both.

If you see a DCT putting down xyz amount of power on a dyno always look for logs of post shifts. In most cases it a glory run. That's what will tell you if its actually holding that power.

[V8bait]

DCT north of 600ft.lbs will start to have issues in my experience. I haven't seen any than can hold 650+ torque without issues yet, and 27psi is knocking on that door depending on your setup.

[Andym3100k]

Oh I see, didn't dyno the car yet. Butt dyno & 100-200 run show is easily 500wph & above if I'm not wrong. Just did 6.1sec on a 100-200 run, car has Jb4, MHD E85 Hybrid BEF, Pure S2, SSP 900Clutch, PI, Both inlet, 7'Fmic, Cp, Dp, Full exhaust, Meth 100%, Running E30 with Peak 25psi tap down to 23psi. Once up boost pass 26psi DCT will feel like is slipping or there is a loud knocking sound

[bigdnno98]

Originally Posted by Andym3100k

Oh I see, didn't dyno the car yet. Butt dyno & 100-200 run show is easily 500wph & above if I'm not wrong. Just did 6.1sec on a 100-200 run, car has Jb4, MHD E85 Hybrid BEF, Pure S2, SSP 900Clutch, PI, Both inlet, 7'Fmic, Cp, Dp, Full exhaust, Meth 100%, Running E30 with Peak 25psi tap down to 23psi. Once up boost pass 26psi DCT will feel like is slipping or there is a loud knocking sound

So you're experiencing DCT clutch slippage even with SSP clutch pack upgrade?

[BoostNinja]

Originally Posted by BuraQ

I think he had upgraded Dudson clutches from what I heard if we are referencing the same person I have in mind who did a M3 conversion on his suspension

You heard wrong. Stock clutches.

[theweebabySeamus]

Originally Posted by BuraQ

Its either the tune or abuse or both. The stock DCT clutches can hold 850nm of torque . After this point is where its expected to start slipping for a clutch that has not been abused and the owner did not continue to ride the slippage.

Most of these reported clutch slippage issue was tune related, abuse, or both.

If you see a DCT putting down xyz amount of power on a dyno always look for logs of post shifts. In most cases it a glory run. That's what will tell you if its actually holding that power.

So what would be considered abuse?

[BQTuning]

Originally Posted by BoostNinja

You heard wrong. Stock clutches.

Thanks for the clarification

Originally Posted by theweebabySeamus

So what would be considered abuse?

other than what was already mentioned in the OP (please see OP), if you continuously experience slippage while continuing to ignore by riding it, or transmission codes being triggered randomly when going WOT.

[theweebabySeamus]

Originally Posted by BuraQ

Thanks for the clarification



other than what was already mentioned in the OP (please see OP), if you continuously experience slippage while continuing to ignore by riding it, or transmission codes being triggered randomly when going WOT.

Just seems that some of the reasons mentioned in the OP, such as WOT from a standstill and using LC (sporadically at least), wouldn't really be abuse. I mean yeah if you're using LC frequently or several times without cooldown at least then I would consider that to be abuse. But shouldn't a stock DCT really should be able to handle WOT from a standstill, in stock form and mildly modded at least?

[BQTuning]

Originally Posted by theweebabySeamus

Just seems that some of the reasons mentioned in the OP, such as WOT from a standstill and using LC (sporadically at least), wouldn't really be abuse. I mean yeah if you're using LC frequently or several times without cooldown at least then I would consider that to be abuse. But shouldn't a stock DCT really should be able to handle WOT from a standstill, in stock form and mildly modded at least?

Two different type so WOT from a stand still on this car

releasing brake immediately when pressing the gas pedal, not an issue

or

Brake boosting and brake boosting in DS mode. Continuously using these method will burn it up and it will start to slip then throw codes.

There is a thread somewhere around here on DCT slippage votes. A significant number of votes experienced slippage for multiple reasons even slightly moded cars

http://www.e90post.com/forums/showth...hlight=Kcyrusm

[theweebabySeamus]

Originally Posted by BuraQ

Two different type so WOT from a stand still on this car

releasing brake immediately when pressing the gas pedal, not an issue

or

Brake boosting and brake boosting in DS mode. Continuously using these method will burn it up and it will start to slip then throw codes.

There is a thread somewhere around here on DCT slippage votes. A significant number of votes experienced slippage for multiple reasons even slightly moded cars

http://www.e90post.com/forums/showth...hlight=Kcyrusm

Oh cool, thanks. I'm kicking around getting a DCT but it can be a gut check since the cost of failure is so high.

[BQTuning]

Originally Posted by theweebabySeamus

Oh cool, thanks. I'm kicking around getting a DCT but it can be a gut check since the cost of failure is so high.

Ya just gotta know the car. Most of the failures IMO is end users that try to treat it like a AT

The home for the DCT is in manual mode

I've brutalized it on an all day event with 34 passes on the track and 33 times using the factory LC manipulation method that I use in 2000+ DA weather.

[Andym3100k]

Originally Posted by bigdnno98

So you're experiencing DCT clutch slippage even with SSP clutch pack upgrade?

No more knock or slippage after loading V.1.31, I'm running 28psi tap down to 26psi without any prob now. City driving the DCT is as smooth as butter with all the help from Martial(MHD) & Terry(JB4)

SSP Clutches is holding very very well👍

[Redbmwm33]

Originally Posted by Andym3100k

No more knock or slippage after loading V.1.31, I'm running 28psi tap down to 26psi without any prob now. City driving the DCT is as smooth as butter with all the help from Martial(MHD) & Terry(JB4)

SSP Clutches is holding very very well👍

What version of the clutch packs did you get? The Spec S or R? Did you buy any other parts?

[Redbmwm33]

I'm trying to decide if I should go with Dodson or SSP. BuraQ

[BQTuning]

Originally Posted by artsoasis

I'm trying to decide if I should go with Dodson or SSP. BuraQ

If I say Dodson then people will like me, if I say SSP then people will hate me more.

hmm, Ill have to think about this one , Oh the one that has the better support.