MHD Stage 2 91 octance tune

[ahgil]

Hi guys,

what do you guys think, i did a pull after the MHD OTS v1.6 map. The boost seems to be very high, is that normal and i see some timing correct which worry me...

https://datazap.me/u/gilbert-wong/stage-2-a90-supra?log=0&data=3-21

Thanks
Gilbert

Sponsored

 

[nc_]

Couple of questions really, for anyone else who might want to look at the log for you: was traction control on?

The difference between your pedal position and throttle position makes me think the TC was cutting power. This could also explain the timing correction - because of a rapidly closing throttle.

The boost jumps are at gear shifts, and the WGDC changes accordingly to vent.

 

[razorlab]

A lot of timing reduction and even negative timing adaption which happens when it's really bad. Low timing overall because of that. Too much tune for the octane you are using. Especially once you get into 5th gear.

There is some torque intervention (131072) because your load actual is higher than requested a couple times.

Seems about right for a MHD OTS, but I would run the Stage 1 tune or get some higher octane.

 

[zrk]

Yeah, you're pulling a ton of timing. You need better fuel or you're going to hurt something. @razorlab seems bang on with his analysis.

Get better fuel, and get a custom tune on here. OTS is garbage.

 

[Jackyl tm]

Thinking of going with this almost exact set up, except I'll be using 93. Would I get better results?

 

[nc_]

Thinking of going with this almost exact set up, except I'll be using 93. Would I get better results?

Just for reference for you I'm on stage 2, with a 400 cel cat, and the GPF in place. Running on V Power (99 RON, 94 Oct). These are my logs from the dyno...

https://datazap.me/u/nc/log-1661671352?log=0&data=2-3-20-37-38-39-40-41-42-47

 

[mokleen]

@MHD Tuning @SD_MK

 

[ahgil]

thanks for the reply, yes i got the feedback from MHD that i have bad gas, I suspect because when i ran the datalog, my tank of gas was 3 weeks old but did not realize it could be that bad. I am going to try and get a fresh pump gas and in HK, we are all using 98Ron93 oct, and for the OTS tune i have, i am using 95RON and 91Oct. Thats why i thought it might be safe, but let me try it another day and will ask for all your help to take a look at the data.

I should of share this link too, this is the same tank of gas, but in stock map datalog, i also see many timing correction, could you guys help me see if even in stock map, i am still getting the same situation bad gas scenario. Than at least i know where to start.

https://datazap.me/u/gilbert-wong/stock-data-log?log=0&data=3-21


by the way for the datalog, yes TC was on, cause first time i ran with this map, really not sure how the power release, so i decided to log with TC.

 

[ahgil]

So worry, i went and filled up a full tank of new pump gas 98RON, 93 oct. did another datalog. I am not too sure if this is ok, it seems to be even worst than my last pull. Could you guys help to chime in on your expertise. I am starting to think if i need to move back to stage 1.....

my car has drop in BMC filter, charge pipe, and AA catted downpipe, thats all.

https://datazap.me/u/gilbert-wong/a...p-gas?log=0&data=4-13-14-23-39-40-41-42-43-44

 

[razorlab]

So worry, i went and filled up a full tank of new pump gas 98RON, 93 oct. did another datalog. I am not too sure if this is ok, it seems to be even worst than my last pull. Could you guys help to chime in on your expertise. I am starting to think if i need to move back to stage 1.....

my car has drop in BMC filter, charge pipe, and AA catted downpipe, thats all.

https://datazap.me/u/gilbert-wong/a...p-gas?log=0&data=4-13-14-23-39-40-41-42-43-44

Why don't you load up the Stage 1 and do a log?

Those shift boost spikes on the MHD tune are nuts.

 

[zrk]

Why don't you load up the Stage 1 and do a log?

Those shift boost spikes on the MHD tune are nuts.

They're ok. The spikes are boost slapping the throttle body blade. Manifold pressure is fine.

Throttle is staying closed for a looong time though.

 

[Sereph102889]

So worry, i went and filled up a full tank of new pump gas 98RON, 93 oct. did another datalog. I am not too sure if this is ok, it seems to be even worst than my last pull. Could you guys help to chime in on your expertise. I am starting to think if i need to move back to stage 1.....

my car has drop in BMC filter, charge pipe, and AA catted downpipe, thats all.

https://datazap.me/u/gilbert-wong/a...p-gas?log=0&data=4-13-14-23-39-40-41-42-43-44

Reach out to Pureboost.de and request a custom tune. Myself, and @SD_MK are both custom tuned on MHD via Pureboost.de by Fabian and I've been very pleased. My car runs very very strong and is very consistent. My car runs back to back to back 8.0x-8.2x 60-130s even after prolonged driving sessions and heatsoak, and during optimal weather I've managed a best of 7.9x. This is pretty damn quick for a downpipe only, E40 tuned stock turbo car, no other mods at all besides an intake.

I can't recommend Fabian and Pureboost enough.

 

[razorlab]

They're ok. The spikes are boost slapping the throttle body blade. Manifold pressure is fine.

Throttle is staying closed for a looong time though.

Right, but that can and should be tuned out.

 

[Sereph102889]

They're ok. The spikes are boost slapping the throttle body blade. Manifold pressure is fine.

Throttle is staying closed for a looong time though.

Could that possibly be caused by Traction control intervention because of trash tires? I know my MHD tuner told me multiple times to not run a datalog, ever, with traction on due to intervention. Also, I was OTS tuned for months and my car ran fine. Obviously everyone's mileage may vary buy still.

 

[razorlab]

Could that possibly be caused by Traction control intervention because of trash tires? I know my MHD tuner told me multiple times to not run a datalog, ever, with traction on due to intervention. Also, I was OTS tuned for months and my car ran fine. Obviously everyone's mileage may vary buy still.

It would be in the log, the active limiter is because of the actual/target load being off.

Limiter 4 is traction control. You can see it in his stock log.

Sponsored