MHD N54 Low Boost Target / Timing Pulls? Logs Attatched

[BarelyMovingWreck]

Hi all, just replaced my valve cover (cracked) yesterday and thought I'd do a pull and log to make sure everything is okay.

In the log (2nd-3rd-4th gear), I noticed the boost target is only really ever around 13psi, which is level the whole rpm range. Boost is hitting target no problem.

I also noticed a minor correction in second gear, but during the pull in fourth gear, all cylinders had some major corrections. WGDC looks good to me but those who know more can evaluate.

can anyone advise what could be the cause of this? I thought mhd stage 1 should be targeting around 15 - 16 PSI.

Plugs, coils, injectors have about 5k miles.

Thanks

https://datazap.me/u/apex6589/stg1-v...&data=3-16

[BarelyMovingWreck]

Just noticed target is a tad above actual boost. Weird, I also did a log last night (without timing unfortunately), and boost was right at target.

[BarelyMovingWreck]

Here is another log with more info

https://datazap.me/u/apex6589/correct?log=0&data=3-19

[BarelyMovingWreck]

So I flashed 93oct V9.0 and did two logs as MHD asks (2500RPM in 3rd, pull until 3-4s in 4th), and everything looks good in third (with one cylinder timing hitting -3.3, kind of high? and then tapering and in the second log another matching it), but then as soon as I shift to 4th all cylinders experience heavy corrections, ranging from 0 all the way upto -6.3.

I also read that it takes a few days for the DME to adapt to the fuel, your car, etc with ots tunes like this, these logs were right after a flash / knock adaptation reset. Any ideas on the corrections after shifting?

Logs:

https://datazap.me/u/apex6589/mhd-st...-6-7-8-9-10-18

https://datazap.me/u/apex6589/mhd-st...-9-10-15-16-18

[iminhell1]

Get rid of the LTFT's and replace with STFT's.
Also add the LPFP pressure.


I think it's a timeout problem. IIRC WGDC PID isn't always active and it's generally something that just after shift and time based. When the base table is off too much and after PID timeouts you'll see throttle closure because the base table is wrong for the requested boost vs throttle.
I'm shit for explaining this in text.

But I'm also assuming traction control was full off. Log kinda says it was but it's not always true.

[BarelyMovingWreck]

Originally Posted by iminhell1

Get rid of the LTFT's and replace with STFT's.
Also add the LPFP pressure.


I think it's a timeout problem. IIRC WGDC PID isn't always active and it's generally something that just after shift and time based. When the base table is off too much and after PID timeouts you'll see throttle closure because the base table is wrong for the requested boost vs throttle.
I'm shit for explaining this in text.

But I'm also assuming traction control was full off. Log kinda says it was but it's not always true.

Thanks, the last two logs I posted in the reply before you have those logged.

I'm not really worried about the boost / WGDC anymore because it turns out I'm boosting normally for stg1, mostly the timing corrections, especially those after shifting 3-4.