MHD Flash Tune

[MDORPHN]

I'm running a MHD tune on my single turbo 1M. It replaced my Cobb tune.

Boost and port injection fueling, however, are controlled by an AEM EMS-4.

Neil

[bdaddylo]

Originally Posted by MDORPHN

I'm running a MHD tune on my single turbo 1M. It replaced my Cobb tune.

Boost and port injection fueling, however, are controlled by an AEM EMS-4.

Neil

How does it compare to the Cobb tune? I'm not doing anything crazy with fueling, so do you think the Cobb tune is adequate?

[E30 Racer]

Are you happy with the power/smoothness? What do the logs look like?

[MDORPHN]

My Cobb tune was excellent and, were it not for my running such a highly-modified set-up, it would have been fine.

However, there were a couple of minor tuning "bugs" that couldn't be addressed with Cobb that we've now successfully resolved
(we = Jake Hershorin/Motiv Motorsports) though the MHD tune.

Power is terrific and the motor is very happy!

BTW, I'll be at NJMP this Friday - Sunday as part of BMW CCA's Oktoberfest and will be at VIR the following weekend for a Tarheel Chapter HPDE.

Neil

[mikewills]

What did you do with you Stage 2 twins? Mike

[VO_1M]

I use MHD to load the Bms e85 backend flash for the Jb4. Jb4 now only controls boost and can be used to trigger PI or meth whatever along with all the features and safeties.

Nice thing about MHD is that anyone can take a look at the flash files. They're not locked to the tuner any more.

Before MHD I had to buy a Cobb just to flash for the Jb4.

[E30 Racer]

Originally Posted by VO_1M

Nice thing about MHD is that anyone can take a look at the flash files. They're not locked to the tuner any more.

Before MHD I had to buy a Cobb just to flash for the Jb4.

I don't think that's true. The maps from the MHD store (and the custom ones from Wedge) are locked.

[mikewills]

Originally Posted by E30 Racer

I don't think that's true. The maps from the MHD store (and the custom ones from Wedge) are locked.

E30......MOTIV hired a new tuner, so they are running specials on etunes until 1 October. I guess the guy is pretty badass and has unlocked a lot of potential in the DME for MHD. If they made a top-mount ST, they would have the market locked down. At $200 for an etune, I can't resist. Mike

[E30 Racer]

Originally Posted by mikewills

E30......MOTIV hired a new tuner, so they are running specials on etunes until 1 October. I guess the guy is pretty badass and has unlocked a lot of potential in the DME for MHD. If they made a top-mount ST, they would have the market locked down. At $200 for an etune, I can resist. Mike

Let us know when you pull the trigger!

[arvinz]

Well, I just pulled the trigger on the flasher/monitor...can't wait to see how this does on my car

[mikewills]

Based off some great communication with Ken, I'm now leaning toward a Wedge etune. He not only answered my email, but he also answered an additional 6-8 questions.

[arvinz]

Originally Posted by mikewills

Based off some great communication with Ken, I'm now leaning toward a Wedge etune. He not only answered my email, but he also answered an additional 6-8 questions.

Same here Ken's been great so far! Can't wait to get this going.

[bdaddylo]

Any updates?

[mikewills]

Originally Posted by bdaddylo

Any updates?

I'm on the third map revision and trying to clean up some minor timing corrections on the lower end. The revisions have been getting better and better. Ken's been great to deal with. Car runs like a scalded cat. I've also received a lot tuning advice and education from another forum member.

[arvinz]

On my 1st map..been logging it the past couple of days. This is today's, let me know what you guys think:

http://datazap.me/u/arvinz/mhd-wedge...og=0&data=4-21

[E30 Racer]

Originally Posted by arvinz

On my 1st map..been logging it the past couple of days. This is today's, let me know what you guys think:

http://datazap.me/u/arvinz/mhd-wedge...og=0&data=4-21

Hard to say based on how you were driving.

When you log, fully disable DSC and use a full throttle application from about 2000 rpm (you gradually increased throttle over time during your log). Continue to 6k RPM unless something doesn't seem right, in which case you should back off immediately and report concerns to your tuner.

[E30 Racer]

On a related note...

Guys, just a reminder that you can upload up to three logs at a time to Datazap. This is really nice since you can log once using standard mode, another for M-mode, and another longer one for normal driving (i.e., partial throttle, low to mid RPM, lots of shifting etc). All of this information is good to have, and is likely to be appreciated by your tuner.

[arvinz]

Originally Posted by E30 Racer

Hard to say based on how you were driving.

When you log, fully disable DSC and use a full throttle application from about 2000 rpm (you gradually increased throttle over time during your log). Continue to 6k RPM unless something doesn't seem right, in which case you should back off immediately and report concerns to your tuner.

DSC was completely off, that was instruction from Ken. He suggested starting from 2-3K RPM in 3rd and throttle into 4th gear but not exceed 6K RPM.

This is just one of the logs, I did about 15 logs today that I've uploaded.

If the weather is nice next week I'll do some more aggressive throttling application.

[CarJunkie]

Can anyone else comment on whether they jumped ship from Cobb to MHD and why?