From what I have seen every car responds different to changes with xHP. But if you wanted it to feel more snappy I would increase Torque punch 1 at a time because they can get very punchy.
XHP DCT - Experience Thread
- Thread starter JohnDaviz
- Start date
I don't think there's much improvement to be made with the sliders in xHP, the OTS maps are set up pretty well. The biggest influence on how the DCT shifts is from the DME. Post a log of some WOT shifts.
hey guys thank you for the quick replies. heres a log on my old set up custom flash and vvt stage 1s with td04 center and billet wheels
That's not really a great log, you have a lot timing corrections and fuel trims are flatlining.hey guys thank you for the quick replies. heres a log on my old set up custom flash and vvt stage 1s with td04 center and billet wheels
I would work on getting a clean log before looking at shifts. STFT below +/-5% and minimal corrections. You might have to step the boost back a few PSI and build up slowly.
You can't tell the entire story from a DME log but you want to see timing only dip for 1 scan cycle, any more and the shift is not completing properly. The rest has to be done by feel really. xHP is well configured but only when the reported torque is accurate, with the JB4 or even with flash only boost scaling you will start to lose accuracy.
MHD released an update recently so that DCT users can now target the full 21.3PSI that MBoost allows. So you should speak with your tuner about reporting load more accurately.
Sorry, didn't see that was for F series. Maybe @Jake@MHD can make recommendations about the 2048 torque limit for F series.
I think I got him in email. Are you Steven? I sent logs to him earlier in the night
I use the Stage 4 xHP tune on my 335i with ZF8 and it's fantastic for the track in S + Sport+ mode and other modes still work very well for the street. I now have a Z4 with a DCT and I would like to have a similar Stage 4 tune for the track but it doesn't exist in OTS maps. Is there someone on this forum who could create this type of mapping for the E89 Z4 DCT? I was talking to Olza but he seems to have gone AFK for now.
I'd hold on for the moment. The GTS software is being ported over for the Z4.
The GTS software really transforms the BMW DCT, it feels like a different gearbox. I'd put it on par with the PDK boxes.
I've had the xHP stage 3 on my car since release but after trying the GTS software I've got no intention of ever going back.
The GTS software really transforms the BMW DCT, it feels like a different gearbox. I'd put it on par with the PDK boxes.
I've had the xHP stage 3 on my car since release but after trying the GTS software I've got no intention of ever going back.
Well you definitely have my attention haha.
But how did you flash it? Is there a bin or file I can flash using xHP to my stock DCT?
This is great news, what is the best way to monitor progress on this? Looking forward to this for the Z4!
There's no ongoing progress report. I've been using it for a couple of months and it works great, I'd expect to see Olza selling it before Christmas.
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