[Saif2018]

Originally Posted by Grip Grip

Nope, my bad. Didn't see that in the fine print. Damn, you'd think that would be on the flash screen. Figures... Thanks for letting me know.





A bunch and have only glanced at them a couple times.

If there are shift speed settings, crank it up.

For the ZF 6/8 transmissions XHP gives the option to activate Line pressure bump to help eliminate slip in 4th or 8th gear respectively. Not sure if such an option is available for DCT, would be worth looking at the custom settings though.

[hellokitty]

Originally Posted by Saif2018

If there are shift speed settings, crank it up.

For the ZF 6/8 transmissions XHP gives the option to activate Line pressure bump to help eliminate slip in 4th or 8th gear respectively. Not sure if such an option is available for DCT, would be worth looking at the custom settings though.

The increase in line pressure is automatic based on the stage of the map if I recall correctly.

If you really want to increase shift speeds, install a M3/M4 flywheel if you can deal with a bit of flywheel chatter.

[Saif2018]

Originally Posted by hellokitty

The increase in line pressure is automatic based on the stage of the map if I recall correctly.

If you really want to increase shift speeds, install a M3/M4 flywheel if you can deal with a bit of flywheel chatter.

Yes I know that, but I've seen on my ZF6 stage 3 map, I have the option to further increase it by about 15% to help with slip if necessary.

no such option for DCT?

[hellokitty]

Originally Posted by Saif2018

Yes I know that, but I've seen on my ZF6 stage 3 map, I have the option to further increase it by about 15% to help with slip if necessary.

no such option for DCT?

I don't see that option in DCT. Keep in mind I have a F80 DCT.

For F8X, stage 1-2 is 19 bar and stage 3 is 20 bar of line pressure. 20 bar allows you to go up to 730 ft lb of torque on stock clutches.

I'm only making around 530 wtq so I'm running XHP stage 2. Stage 3 was pretty horrific to drive on as a daily driver since the downshifts were too harsh IMO.

[Saif2018]

Originally Posted by hellokitty

I don't see that option in DCT. Keep in mind I have a F80 DCT.

For F8X, stage 1-2 is 19 bar and stage 3 is 20 bar of line pressure. 20 bar allows you to go up to 730 ft lb of torque on stock clutches.

I'm only making around 530 wtq so I'm running XHP stage 2. Stage 3 was pretty horrific to drive on as a daily driver since the downshifts were too harsh IMO.

With such high torque limits, no wonder there isn't an option for the M3.

Yeah the downshifts without keeping a light foot on the throttle can be harsh even on ZF6, but I find keeping a little throttle during the downshift makes it smooth especially in M mode.

[NoGuru]

With xHP 1.3 if the shifts are feeling spongy, increase torque punch by 1 so I think stock is on like 3 try 4 and then 5 to see how it does. I think you need to have the sport button pushed to feel the punch shifts.

My car feels soooo much better on this version and shifts are awesome.

[CarAbuser]

Originally Posted by Grip Grip

Installed XHP Stage 3 (V1.3) on my DCT car yet the 3-4 shift is slow as hell from slipping I suppose. Should I be making custom adjustments to the XHP tune or leave it alone. Power level's around 600whp.

https://datazap.me/u/awheelus/335is-...og=0&data=3-21

https://datazap.me/u/awheelus/335is-...og=1&data=3-21

You should contact xHP support. I've seen others having torque limiter 4 issues, they should be able to help.

Doesn't look like slip, just torque intervention.

Also you're fuel trims are nasty and you have some serious timing corrections.

[Grip Grip]

Update:

Received the following from XPH:

"can you please activate following 2 custom settings and then reflash stage 3 v1.3:

Torque punch and set it to 5

Torque reduction and set it to 500"

Will report back once have a chance to flash and test.

[Grip Grip]

I think the DCT is shifting fine now, so I'm wondering how far to push on one 450 lpfp and port injection with 550cc injectors. What say you guys? I think I'm done with revisions for now with a e40 PI tune as the turbos are at 85-90% WGDC, but is there power to be had by going with a 525 pump and adding more timing with a higher ethanol percentage? Not looking to add boost, just timing.

https://datazap.me/u/awheelus/335is-...0-2-3-20-21-27

[hellokitty]

Originally Posted by Grip Grip

I think the DCT is shifting fine now, so I'm wondering how far to push on one 450 lpfp and port injection with 550cc injectors. What say you guys? I think I'm done with revisions for now with a e40 PI tune as the turbos are at 85-90% WGDC, but is there power to be had by going with a 525 pump and adding more timing with a higher ethanol percentage? Not looking to add boost, just timing.

https://datazap.me/u/awheelus/335is-...0-2-3-20-21-27

Who is your tuner? Maybe ask them?

[CarAbuser]

Originally Posted by Grip Grip

I think the DCT is shifting fine now, so I'm wondering how far to push on one 450 lpfp and port injection with 550cc injectors. What say you guys? I think I'm done with revisions for now with a e40 PI tune as the turbos are at 85-90% WGDC, but is there power to be had by going with a 525 pump and adding more timing with a higher ethanol percentage? Not looking to add boost, just timing.

https://datazap.me/u/awheelus/335is-...0-2-3-20-21-27

Looks like it's shifting better but the log has problems. You have major timing corrections (-8.3) which are so severe the car is actually reducing the load target.

I'd turn it down a bit before you destroy something.

[NoGuru]

Yeah STFT are getting off by a bit. Hard to say what is going on but the tuner should know.

[Grip Grip]

Originally Posted by CarAbuser

Looks like it's shifting better but the log has problems. You have major timing corrections (-8.3) which are so severe the car is actually reducing the load target.

I'd turn it down a bit before you destroy something.

Thanks. Is it really on the ragged edge considering only cyl 5 is showing timing corrections? I'm going to do a plug check and hope that fixes it. Probably do coil swap too between 4 and 5 and see if it moves. I've cleaned the valves twice in 6 months, so that shouldn't be the culprit.

My tuner seems to be more concerned with timing corrections when they affect 3 or more cyls, but I don't know at what point a single one becomes severe enough to warrant concern. Would you say above -6?

Originally Posted by NoGuru

Yeah STFT are getting off by a bit. Hard to say what is going on but the tuner should know.

Thanks and good catch. That one has him scratching his head a little.

[CarAbuser]

Originally Posted by Grip Grip

Thanks. Is it really on the ragged edge considering only cyl 5 is showing timing corrections? I'm going to do a plug check and hope that fixes it. Probably do coil swap too between 4 and 5 and see if it moves. I've cleaned the valves twice in 6 months, so that shouldn't be the culprit.

My tuner seems to be more concerned with timing corrections when they affect 3 or more cyls, but I don't know at what point a single one becomes severe enough to warrant concern. Would you say above -6?



Thanks and good catch. That one has him scratching his head a little.

Anything above -6 is bad news but -8 is serious and you seem to be having them regularly.

The advice that timing corrections only matter when they affect multiple cylinders is not right. It's something to consider for minor corrections but when regularly seeing anything -6 or more you need to take action.

[Grip Grip]

Ok guys, in response to the cyl 5 misfires I was having I've upped the ethanol % and it appears I was likely not running a high enough mix. Anyway, I still see -5.3 on cly 5 for a split second right as I'd be completing a 1/4 mile pull as well as a millisecond of -8.

I've swapped the cyl 5 inj and plug and still see around -6 on a pull. I don't feel the tune is too aggressive, so what say you? I've read it could be the valves, which I've cleaned twice and don't mind just cleaning #5, but what can I do in regards to the PCV? I've installed a catch can as well as the upgraded BMS PCV valve.

Anything else you guys recommend I should do besides retarding the timing, lowering boost, or adjusting the tune in general?

Furthermore, this mix is pretty hard on the single 450 and I'm wondering if it's safe fuel pump wise and timing correction wise to run it at the track for a few 1/4 mile runs? I think it's fine, but I'm no expert. Thanks in advance!

Also, does anyone have a economical and reputable source for the Walbro 525 pump? Most everything I find online is way overpriced or clearly a counterfeit. In this log the LPFP is starting to drop with the 450 and I believe the 525 would allow for full e85 on my setup.


https://datazap.me/u/awheelus/7-31-2...10-12-21-22-25

[Saif2018]

Originally Posted by Grip Grip

Ok guys, in response to the cyl 5 misfires I've upped the ethanol % and it appears I was likely not running a high enough mix. Anyway, I still see -5.3 on cly 5 for a split second right as I'd be completing a 1/4 mile pull as well as a millisecond of -8.

I've swapped the cyl 5 inj and plug and still see around -6 on a pull. I don't feel the tune is too aggressive, so what say you? I've read it could be the valves, which I've cleaned twice and don't mind just cleaning #5, but what can I do in regards to the PCV? I've installed a catch can as well as the upgraded BMS PCV valve.

Anything else you guys recommend I should do besides retarding the timing, lowering boost, or adjusting the tune in general?

Furthermore, this mix is pretty hard on the single 450 and I'm wondering if it's safe fuel pump wise and timing correction wise to run it at the track for a few 1/4 mile runs? I think it's fine, but I'm no expert. Thanks in advance!

Also, does anyone have a economical and reputable source for the Walbro 525 pump? Most everything I find online is way overpriced or clearly a counterfeit. In this log the LPFP is starting to drop with the 450 and I believe the 535 would allow for full e85 on my setup.


https://datazap.me/u/awheelus/7-31-2...10-12-21-22-25

You've got DSC or DTC on, log shows Torque Limiter active several times. Reducing boost and timing are good ideas. LPFP is going below 50psi, you may be ok but wouldn't wanna do any track sessions with such low numbers personally,

WGDC reaching 90%+, looks like your pushing those turbos too hard.

[Grip Grip]

Originally Posted by Saif2018

You've got DSC or DTC on, log shows Torque Limiter active several times. Reducing boost and timing are good ideas. LPFP is going below 50psi, you may be ok but wouldn't wanna do any track sessions with such low numbers personally,

WGDC reaching 90%+, looks like your pushing those turbos too hard.

Thank you sir for your valuable advice, it's greatly appreciated!

Car is only pushed for testing or on the track, both of which are rare. The sub 50psi case was for a millisecond, but plan to remedy with a 525. Otherwise, what do you see? The car is getting dangerous so I only did the single push for traction control on the latest logs to increase the chance it doesn't become an off-road vehicle. I don't have an issue personally with the car limiting torque if it keeps the shinny side up. Don't mind the 85%+ WGDC either as I don't daily the car, race it, etc. My tuner is fine with 85 or lower sustained or 85+ for initial pulls, 85+ for durations near redline. It's a garage queen and the most action it sees is proper data-logging and a few 1/4 mile runs to end the season. I don't rape it daily like most.
Thanks

[Saif2018]

Originally Posted by Grip Grip

Thank you sir for your valuable advice, it's greatly appreciated!

Car is only pushed for testing or on the track, both of which are rare. The sub 50psi case was for a millisecond, but plan to remedy with a 525. Otherwise, what do you see? The car is getting dangerous so I only did the single push for traction control on the latest logs to increase the chance it doesn't become an off-road vehicle. I don't have an issue personally with the car limiting torque if it keeps the shinny side up. Don't mind the 85%+ WGDC either as I don't daily the car, race it, etc. My tuner is fine with 85 or lower sustained or 85+ for initial pulls, 85+ for durations near redline. It's a garage queen and the most action it sees is proper data-logging and a few 1/4 mile runs to end the season. I don't rape it daily like most.
Thanks

If the above is the case, wouldn't worry about timing corrections. Timing corrections will be there though with DTC on (single push) that's normal.

I'll have to look at the AFR's and Trims later, not ideal on the phone.

[NoGuru]

Originally Posted by Saif2018

If the above is the case, wouldn't worry about timing corrections. Timing corrections will be there though with DTC on (single push) that's normal.

I'll have to look at the AFR's and Trims later, not ideal on the phone.

I agree, you should be fine for short quick timing corrections. AFR's look good but I would be a little concerned about your STFT's.

How old are the injectors? You might have one clogged or not spraying very well.
Did you install port injection yet?

[Grip Grip]

Originally Posted by Saif2018

If the above is the case, wouldn't worry about timing corrections. Timing corrections will be there though with DTC on (single push) that's normal.

I'll have to look at the AFR's and Trims later, not ideal on the phone.

Originally Posted by NoGuru

I agree, you should be fine for short quick timing corrections. AFR's look good but I would be a little concerned about your STFT's.

How old are the injectors? You might have one clogged or not spraying very well.
Did you install port injection yet?

I bought the car ('13) used last year with index 11 injectors and I'm not sure of their age. I'm running PI with 550cc injectors and a Walbro 450cc lpfp.

[NoGuru]

Originally Posted by Grip Grip

I bought the car ('13) used last year with index 11 injectors and I'm not sure of their age. I'm running PI with 550cc injectors and a Walbro 450cc lpfp.

Your injectors are probably fine. My guess is the 450 or EKP can't keep up.
I would try and get the 525 in ASAP see what happens.
Also you might need to tell the AIC-6 to spray more. I might jump up in like 10% increments but swap out your pump or try increasing spray separately.

[rismo]

Originally Posted by Grip Grip

Nope, my bad. Didn't see that in the fine print. Damn, you'd think that would be on the flash screen. Figures... Thanks for letting me know.





A bunch and have only glanced at them a couple times.

Do it again, and yes it will help.
It's better to redo and allow the DCT to adjust from it's baseline.