[Supr3me]

I honestly am still stuck at stun mode, around 23 PSI. Really want 25/26 for kill mode.

[OzBMR]

Originally Posted by Sµpreme

I did a couple of logs with the xHP settings changed. These two logs are in Sport Drive, Sport +. The xHP torque limiters were all advanced to max (1200), but the toggle switch for Torque Limits was switched off.

https://datazap.me/u/tnilson/kick-do...og=1&data=4-18

The shudder issue did not reoccur, but I definitely felt like I was being limited - power didn't seem as high.
I will reflash today with the Torque Limit toggle switch turned on.

In Kickdown#1 there's no torque limiter, but load and boost exceed target and throttle closes to 59%. I think because WGDC was already dropping prior to load actual exceeding target and throttle closing to account for the potential overshoot the DME didn't need to implement other measures. It does exceed load target but the DME had it covered. Torque limiters 4 and 8 activate at gear changes and is normal.

In Kickdown#2 torque limiter 131072 activates at 4520 RPM and WGDC is still at 100%. Load Actual at 228 exceeds Load Target of 219 and at 4945 RPM (the next data point) boost overshoots target of 22.4 PSI, hitting 24.9 PSI, throttle closure and WGDC reducing from 100 to 75. I think the torque limiter activated because WGDC was still at 100% when load exceeded target.

An interesting observation looking at your logs, it seems like the Dorch Stage 2 has an internal pressure relief valve that activates around 3500 PSI, similar to the stock HPFP, because between 5600 - 6100 RPM in Kickdown#1 the rail pressure hits and holds 3585 PSI. It's good to know it's got the same protection for your injectors as the stock HPFP.

I don't think there's any evidence of gearbox/TCU intervention, looks to be all DME and xHP is doing it's job.

There's a little bit of lag from the Pure800, about 1 second from the time you go 100% accelerator car changes from 4th to 2nd RPM goes to about 3000 in 2nd and boost only comes to the party after 4200 RPM.

Wedge may be able to assist spool by retarding timing? MHD in their OTS maps have retarded timing, even negative, during spool up since V3 and improved stock spool by maybe 200 RPM.

[Supr3me]

Originally Posted by OzBMR

In Kickdown#1 there's no torque limiter, but load and boost exceed target and throttle closes to 59%. I think because WGDC was already dropping prior to load actual exceeding target and throttle closing to account for the potential overshoot the DME didn't need to implement other measures. It does exceed load target but the DME had it covered. Torque limiters 4 and 8 activate at gear changes and is normal.

In Kickdown#2 torque limiter 131072 activates at 4520 RPM and WGDC is still at 100%. Load Actual at 228 exceeds Load Target of 219 and at 4945 RPM (the next data point) boost overshoots target of 22.4 PSI, hitting 24.9 PSI, throttle closure and WGDC reducing from 100 to 75.

An interesting observation looking at your logs, it seems like the Dorch Stage 2 has an internal pressure relief valve that activates around 3500 PSI, similar to the stock HPFP, because between 5600 - 6100 RPM in Kickdown#1 the rail pressure hits and holds 3585 PSI. It's good to know it's got the same protection for your injectors as the stock HPFP.

I don't think there's any evidence of gearbox/TCU intervention, looks to be all DME and xHP is doing it's job.

There's a little bit of lag from the Pure800, about 1 second from the time you go 100% accelerator car changes from 4th to 2nd RPM goes to about 3000 in 2nd and boost only comes to the party after 4200 RPM.

Wedge may be able to assist spool by retarding timing? MHD in their OTS maps have retarded timing, even negative, during spool up since V3 and improved stock spool by maybe 200 RPM.

too many beers to fully understand all this tonight but as always I appreciate it =D

[trescuarenta]

Surprised this thread doesnt get more attention. Mapped my car to BM3 2+ and XHP st3 on basic settings, tried to launch twice and managed a 3.69 0-100 (3.54 0-60 mph). Not too bad, will be improved hopefully when i adjust the settings.

[Supr3me]

Originally Posted by trescuarenta

Surprised this thread doesnt get more attention. Mapped my car to BM3 2+ and XHP st3 on basic settings, tried to launch twice and managed a 3.69 0-100 (3.54 0-60 mph). Not too bad, will be improved hopefully when i adjust the settings.

Honestly I'm still focused on the engine tuning side of things and making sure things are running strong and reliably on that front before spending a lot of time working on launches etc. Just received my dragy this week so I will probably start fiddling with it soon.

[Dazz4C]

Originally Posted by OzBMR

Some general xHP comments pulled from a few other posts, consolidated here:

*snip*

Torque Limits

Torque Limits I have off in RWD M140i, although I'm going to experiment with 450Nm for 1st, 500Nm for 2nd and maybe 550Nm for 3rd, the rest can stay at maximum. This is to try to maximise grip, I'm not worries about the driveline.

There are preset options to choose from if you activate this, or you can set your own values. Presets include Standard, RWD, Sticky Tires and AWD.

RWD is 440Nm, 530Nm and 720Nm for 1/2/3. If these are actual Nm values as reported at clutch the 720 seems too high to be of any influence?

AWD setting is 650Nm, 800Nm, 1100Nm for 1/2/3. Again, question the value ofanything over 650Nm at least for stock turbo setup.

Hey Oz, did you ever settle on any torque limit settings?

I'm finding anything above 420Nm in 2nd gear will intermittently cause slip depending on the road surface. Setting it at 400Nm will almost always grip on 245 wide Michelin PS4 tyres for a LCI M135i on MHD Stage 2+ 98RON.

1st gear I've left alone since I'm running always launch from 2nd gear. 3rd gear always seems to hook up, even with ~600Nm+ at the clutch; the RWD preset for 720Nm is never reached anyway, so the limiting factor seems to be 2nd gear slip for me at least.

Being on a prepped surface like Willowbank will probably let you use higher 2nd gear torque limits (Sticky Tyres preset?). Just trying to see what torque limit values you might've set for street use.

[OzBMR]

Originally Posted by Dazz4C

Hey Oz, did you ever settle on any torque limit settings?

I'm finding anything above 420Nm in 2nd gear will intermittently cause slip depending on the road surface. Setting it at 400Nm will almost always grip on 245 wide Michelin PS4 tyres for a LCI M135i on MHD Stage 2+ 98RON.

1st gear I've left alone since I'm running always launch from 2nd gear. 3rd gear always seems to hook up, even with ~600Nm+ at the clutch; the RWD preset for 720Nm is never reached anyway, so the limiting factor seems to be 2nd gear slip for me at least.

Being on a prepped surface like Willowbank will probably let you use higher 2nd gear torque limits (Sticky Tyres preset?). Just trying to see what torque limit values you might've set for street use.

I haven't got around to testing the torque limit settings with my car.

Thanks for posting your results.

When I get around to testing I'll post back here too.

I agree that a prepped drag strip and Hoosier radials will allow a higher torque setting.

[pauli18c]

Bumping this again. Just flashed stage 3.

How's everyone liking their settings?

[Supr3me]

Honestly I'm struggling with launch. I've been to the dragstrip twice and done some back road launches and my times in auto with LC enabled are WAY slower than doing a manual brake boost launch and shifting manually. Like, mid 12's vs mid 11's on the quarter.
I have my LC moved up to +15% and like, +5% torque scaling after launch. Everything just seems softer in auto mode.

[lepopotani]

Originally Posted by OzBMR

Some general xHP comments pulled from a few other posts, consolidated here:

xHP Launch Control

It doesn't just increase RPM at launch, it adjusts how much boost/torque your car is allowed to build while the brake is depressed and it also allows adjustment of torque scaling after launch.

There are two sliders that you can adjust and you can reduce up to 15% or add as much as 40% to both.

For a RWD car, tuned, even with drag radials adding more torque at launch is not quicker, but for X drive cars traction is not so much of a problem.

I have RWD so leave launch control alone, already too much torque and I launch at the drag strip with Hoosiers just brake boosting in 2nd gear Sport+ manual.

Glemm1970 with M140i X Drive has used Set Launch Torque at 5% and Torque Scaling After Launch at 14%, combined with Preset AWD Torque Limits to achieve a 1.59s 60ft time and 11.12@196.54km/h (122.12mph) quarter mile. I think with around 470WHP?

with 340i X Drive has good results with 10% set launch torque and 15% torque scaling after launch. No slippage, it just goes and heard a slight tire chirp 11.56@119 with 1.72 60ft I think about 450 WHP with MP E30 tune based on mph in quarter.

Shiftmap Editor

My D mode settings are for up shifts
-25% for 1 - 2
-12% for 2 - 3
the rest at 0.

For downshifts I have
6 - 5 at +15%
7 - 6 at +25%
8 - 7 at +35%.

Changing these takes advantage of the increased torque from the DME tunes and reduces lugging the engine at low load. Note: this change is not effective with cruise control active, car reverts to standard up an downshifts. I've left S mode as per stock.

has following settings - Shiftmap Editor set both D and S mode as After your Up-Shifts to -5% (1->2, 2->3, 3->4) the rest 0%. And After your Down-Shifts set to +5% only for 6->5, 7->6, and 8->7


Max RPM

I haven't used Max RPM yet and leave it off as when I'm on it I'm in Sport+ and manually shifting, changing at 6500 RPM. My stock setting are 6900 RPM in S and M modes for every gear and D is 6400 RPM for gears 1 - 4 then 6100, 5300 and 6400, but I have this setting off.

Use Stock Shift Maps

Use Stock Shift Maps I have off. Use the xHP modified shift maps with the custom setting via Shiftmap Editor and it is nice.

Take off in 2nd gear

Take off in 2nd gear as standard ON, same for D and S. In M mode it always drops back to 1st.

Throttle Blips M-Mode

Throttle Blips M-Mode I haven't changed this and use the default xHP throttle blip settings which I find to be perfect in M mode, especially 4th to 3rd, 3rd to 2nd and 2nd to 1st and when changing done at about 2000 RPM. I try to limit pops and bangs as I run catalytic converter down pipe.

Gear Display

Gear Display - turn this on to see current gear always next to the D or S in your instrument cluster. I like this.

Torque Limits

Torque Limits I have off in RWD M140i, although I'm going to experiment with 450Nm for 1st, 500Nm for 2nd and maybe 550Nm for 3rd, the rest can stay at maximum. This is to try to maximise grip, I'm not worried about the driveline.

There are preset options to choose from if you activate this, or you can set your own values. Presets include Standard, RWD, Sticky Tires and AWD.

RWD is 440Nm, 530Nm and 720Nm for 1/2/3. If these are actual Nm values as reported at clutch the 720 seems too high to be of any influence?

AWD setting is 650Nm, 800Nm, 1100Nm for 1/2/3. Again, question the value ofanything over 650Nm at least for stock turbo setup.

Soft Shifts in Sport Mode

Soft Shifts in Sport Mode I have off, I like the firmer shifts

I have had my xHP for 2 weeks and mostly run it in manual mode with DSC fully off when I am on the drag strip... I tried once to launch with the chequered flag and it was impossible to get the car moving without wheel spin.

I will definitely try your settings out of curiosity but at the moment I am loving the manual shifts as well as driving in comfort mode.

[zeenon53]

I seem to be losing my transmission on the 2-3 shift. After many launches with my xdrive w bm3 stage2+ and xHP. I've heard a siren noise coming from the tranny and it won't go into 3rd. I have many logs.

[vanilla]

Originally Posted by zeenon53

I seem to be losing my transmission on the 2-3 shift. After many launches with my xdrive w bm3 stage2+ and xHP. I've heard a siren noise coming from the tranny and it won't go into 3rd. I have many logs.

Any update?
I've been holding back for fear of long term problems like this.

[Avaley]

Has anyone long termed / launched with xHP at +40% consistently?

I had a B48 and have been launching with +40% sliders and am a bit worried as there is a warning for stress on AWD. Curious if any B58s had noticed any stress in chassis or issues

[haagm58]

Originally Posted by trescuarenta

Surprised this thread doesnt get more attention. Mapped my car to BM3 2+ and XHP st3 on basic settings, tried to launch twice and managed a 3.69 0-100 (3.54 0-60 mph). Not too bad, will be improved hopefully when i adjust the settings.

I haven't flashed xHP yet, am debating between xHP and the Stage 2 KermaTDI tune w/transmission flash.

Anyway, are the 0-60 and 0-100 data points read from the xHP app or from Dragy or another app? TIA!

[trescuarenta]

Originally Posted by haagm58

I haven't flashed xHP yet, am debating between xHP and the Stage 2 KermaTDI tune w/transmission flash.

Anyway, are the 0-60 and 0-100 data points read from the xHP app or from Dragy or another app? TIA!

They were from dragy

[dangtimes]

Originally Posted by vanilla

Any update?
I've been holding back for fear of long term problems like this.

Originally Posted by vanilla

Any update?
I've been holding back for fear of long term problems like this.

Happened to me this evening...what do we need to adjust?

[Xchrisxxxx]

Do you guys wait the 50 mile after reflashing new settings?

[1slowb58]

Originally Posted by Xchrisxxxx

Do you guys wait the 50 mile after reflashing new settings?

You don't have to, that only applies to the initial flash. When it's just settings flash and go.

[harkes]

Drag Mode - anyone? I tried it - pretty crazy and will definitely get the job done, but not very refined like the DCT torque punch (hoped it would be like that).

[F30_fanatic480]

Anybody still read this thread? New(ish) to the platform. I could really use some advice/help with the XHP. I have it on stock settings and I’m not very happy with it. I feel like I hit 4th gear before even passing an intersection from a red light on medium acceleration.

Located in chandler,az.
2016 340I RWD
MHD stage 2

[BradNC]

https://datazap.me/u/bradvol/launch-...6-19-20&solo=3

Any idea why my boost would only be 2.1 psi before launch? xDrive 440 GC with MHD stage 2, high flow DP, intake, and xHP stage 3 with LC set to 15% for both settings.

I get lag when I let go of the brake and then it kicks in after a delay. This was 4.14 0-60 and should be quicker I would think.

[mikewhiskey]

Originally Posted by F30_fanatic480

Anybody still read this thread? New(ish) to the platform. I could really use some advice/help with the XHP. I have it on stock settings and I’m not very happy with it. I feel like I hit 4th gear before even passing an intersection from a red light on medium acceleration.

Located in chandler,az.
2016 340I RWD
MHD stage 2

Same for me, I think the key is having the shifter lever over for "Sport" to let the engine rev a little more before upshift