Stock vs Aftermarket Tune - 1/4 mile performance




dude your definitely gonna see great number. Once you start putting add on’s. What your putting down now is without bolt ons is amazing, wait till you do.
The Best of Mercedes & AMG
If AMS can make a comparable tune for ethanol blend fuel 😎
If AMS can make a comparable tune for ethanol blend fuel 😎
I saw a E85 dyno yesterday which was very impressive. It had an inline HPFP installed though to be safe. I may end up going that route if torque can be reined back somewhat. I'm not a fan of clutch slip and torque management.
I saw a E85 dyno yesterday which was very impressive. It had an inline HPFP installed though to be safe. I may end up going that route if torque can be reined back somewhat. I'm not a fan of clutch slip and torque management.
Apologies for the incorrect information. The HPFP being replaced is the actual mechanical unit. I have no more information on it unfortunately.
Last edited by brutus_tx; Oct 23, 2019 at 01:39 PM. Reason: incorrect info
We knew we were making power due to my traps speeds when last we went to the track. This confirmed it.
We also logged HPTuner during the runs and I'll update the thread once I'm back at the house. The data logged looked really good.
Remember, this tune netted me consistent 11.0@129 runs the last time I went to the track.
Also remember my car is stock with the exception of the water meth, which we turned off for the runs. This is all tune!
And here he is in his native environment...
There is more in the tune according to Jerry, and he thinks we could eek out an additional 30 whp based on the logs, but truthfully, I like having that little extra headroom.
The car really likes this tune. Drive-ability has been enhanced in all aspects.
What I love about this tune is the ability to run straight 93 if wanted, or blend up to E50 if wanting to play.
This way, I can drive around with 93 octane making probably 60 less wheel horsepower and only add the E85 on top when wanting to play.
This should help with longevity on the platform.
This is the data index for the three graphs below...
Here is Pass 1...
Pass 2...
And finally Pass 3
All three runs were smooth a silk, and you'll notice how they overlaid each other on the dyno plot posted in the thread above.
The car is happy with this tune.
While the dyno plot tells one part of the equation, its data like this that indicates how comfortable the engine is with the tune.
Couple this with the last quarter mile slips that reflect this tune and I think I've done as good a job of detailing the tune as possible.
If anyone is on the fence about getting a flex fuel tune I can 100% endorse this one.
DM me if you are more comfortable conversing privately.
Next steps are a TCU tune hopefully.
I've run a range of fuels these last few weeks, ranging from E20 through E50 concentrations.
I have not run straight 93, but I expect that will occur on my next road trip when I don't have ready access to E85.
This tune will work with Race Gas as well. Its a great all around tune.
Last edited by brutus_tx; Oct 24, 2019 at 05:50 PM. Reason: typo
What are you using to log? I'd love to get one. Hp tuners vcm scanner?
Thanks for all your info
I've run logs at the track with/without water meth with no appreciable benefit to be honest. I'm running dual 250cc injectors. I may need to up the size to 500cc to see a benefit.
The jury is still out on that one. The tune was actually adding timing during the run so its very happy, and why Jerry felt there was more in the tune to be had.
Yes, I am using VCM Scanner using the HP Tuner dongle logging to a laptop PC on the passenger seat.
They are post intercooler I believe.
Attachment 422650
Note the red pipes...






Very impressive results.

