[JBA87]

I'm just curious what others experiences have been with E30 Stage 2 Tunes on these cars. I was running Stage 2 DME Tune 93 octane which fairly consistently would put down a 6.75-6.9 on the 60-130 on 93 pump gas. I also overlayed the 93 octane map with Jb4 map 3 and an e25 blend and would fairly consistently see times in the 6.5-6.6 range.

I just loaded the DMe e30 stage 2 file, and my times have seen no improvement (in fact times, at times, are even worse than the 93 octane file). My best time on e30 map was 6.6 on the 60-130 and more recently I am seeing times in the 7s with the e30 file.

My understanding is that this setup should see low 6s or high 5s based on three cars running similar setups.

I have ER downpipes (not Keller) and no other mods.

Just curious what gives? Is it my fuel? Do I need the bigger 3.5" downpipes? Do I need an intake ? Is it an adaption thing? Why are my times in e30 so slow? I am going to try some other e30 maps (evolve and bm3) to see if I have similar issues.

However it was definitely not my expectation for the e30 map, which targets about 25 psi on boost to get slower than the 93 map

DME isn't sure either because this file is their fastest tune.

My timing seems low for e30

Here is a log of my 6.8 second run on e30 map. This was with about e35 blend (10 gallon Sunoco 93 and 5 gallon e85)

[onfireX5]

Originally Posted by JBA87

I'm just curious what others experiences have been with E30 Stage 2 Tunes on these cars. I was running Stage 2 DME Tune 93 octane which fairly consistently would put down a 6.75-6.9 on the 60-130 on 93 pump gas. I also overlayed the 93 octane map with Jb4 map 3 and an e25 blend and would fairly consistently see times in the 6.5-6.6 range.

I just loaded the DMe e30 stage 2 file, and my times have seen no improvement (in fact times, at times, are even worse than the 93 octane file). My best time on e30 map was 6.6 on the 60-130 and more recently I am seeing times in the 7s with the e30 file.

My understanding is that this setup should see low 6s or high 5s based on three cars running similar setups.

I have ER downpipes (not Keller) and no other mods.

Just curious what gives? Is it my fuel? Do I need the bigger 3.5" downpipes? Do I need an intake ? Is it an adaption thing? Why are my times in e30 so slow? I am going to try some other e30 maps (evolve and bm3) to see if I have similar issues.

However it was definitely not my expectation for the e30 map, which targets about 25 psi on boost to get slower than the 93 map

DME isn't sure either because this file is their fastest tune.

My timing seems low for e30

Here is a log of my 6.8 second run on e30 map. This was with about e35 blend (10 gallon Sunoco 93 and 5 gallon e85)

Do you have the log of the DME 93 with JB4 3 with E25 6.6 pass log to compare the metrics ?

[JBA87]

I think this is from one of my faster times (6.54) on stage 2 DMe with map 3 jb4 and e25 blend. Notice my timing is much higher m, in average, vs. e30 map.

[JBA87]

Oddly I wonder if I should lower the e85 content. Maybe car is reducing timing to compensate for the higher octane and it's affecting performance ?

[FloridaM5]

What were the iats like at the beginning and end of those two runs you posted logs for?

[onfireX5]

Originally Posted by FloridaM5

What were the iats like at the beginning and end of those two runs you posted logs for?

Great point about IAT.

Lower timing is reducing power.

BUT, look at the trims. MUCH higher in the second graph at 6.5x. That would make you think the E percentage was much higher also which would give you more octane plus cool the combustion chamber. All add more timing and power.

Have you tested the E content in the fuel. Could be as simple as the fast run having 80% E out of the pump and the slower run having 55% E out of the pump. E85 is rarely E85.

[FloridaM5]

Originally Posted by onfireX5

Great point about IAT.

Lower timing is reducing power.

BUT, look at the trims. MUCH higher in the second graph at 6.5x. That would make you think the E percentage was much higher also which would give you more octane plus cool the combustion chamber. All add more timing and power.

Have you tested the E content in the fuel. Could be as simple as the fast run having 80% E out of the pump and the slower run having 55% E out of the pump. E85 is rarely E85.

Man I continue to look for a kit to install on the car to monitor what's actually in the car. I see there are some test kits to check fuel at the pump. Might start that myself.

[ss_m5]

Will be interesting to see once you test the e85.

We're on a similar path. I just loaded DME e30 and got this 15 min later. She definitely has more in her. With a little adaptation and a bit of a favorable slope it might be in the 5's.

[JBA87]

I just order an ethanol kit (won't be here until freaking may 3rd wtf!!)

I might just go by some
X85 to test the fuel issue

[FloridaM5]

Originally Posted by JBA87

I just order an ethanol kit (won't be here until freaking may 3rd wtf!!)

I might just go by some
X85 to test the fuel issue

I'll scoop some up OneEthanol as well and report back. I will say this, lately, iats are starting at 100 beginning of the run and hitting 120ish at the end....not gonna get anywhere near 6 seconds in that weather, in this car. Are you seeing the same iats? I pretty much need below, or around, 60 degrees ambient for this car to perform in the way we are expecting it (mid 6s)

...worked with hockeytyme to piece together a meth kit. ordered components this weekend.

[JBA87]

I mean temps matter but I can see mid 6s in this heat

The issue is my fuel

Fuel around here sucks

I did manage to find this place , which is awesome because they have an e30 pump (sweet!!! It's in Royal Palm on 441 if anyone in Florida is wondering)

I drove there an added just a straight 5 gallon shot of that e30 + 1 gallon e85 to my half tank of shitty "e35" blend and it made a huge diff on timing

Did an invalid due to slope 6.57

Let me know how you setup your meth kit

I want to do same

[FloridaM5]

Originally Posted by JBA87

I mean temps matter but I can see mid 6s in this heat

The issue is my fuel

Fuel around here sucks

I did manage to find this place , which is awesome because they have an e30 pump (sweet!!! It's in Royal Palm on 441 if anyone in Florida is wondering)

I drove there an added just a straight 5 gallon shot of that e30 + 1 gallon e85 to my half tank of shitty "e35" blend and it made a huge diff on timing

Did an invalid due to slope 6.57

Let me know how you setup your meth kit

I want to do same

That's awesome. Def a good time there. All of my sub 6.6 second runs are in the 50s or 60s. Did a run the other day in 81 degrees and pulled off a 6.7...wasn't unhappy with that one. But iats were super high and didnt try again.

Will do re the meth kit. Def let you know.

[Bmwusabmw]

Originally Posted by JBA87

I'm just curious what others experiences have been with E30 Stage 2 Tunes on these cars. I was running Stage 2 DME Tune 93 octane which fairly consistently would put down a 6.75-6.9 on the 60-130 on 93 pump gas. I also overlayed the 93 octane map with Jb4 map 3 and an e25 blend and would fairly consistently see times in the 6.5-6.6 range.

I just loaded the DMe e30 stage 2 file, and my times have seen no improvement (in fact times, at times, are even worse than the 93 octane file). My best time on e30 map was 6.6 on the 60-130 and more recently I am seeing times in the 7s with the e30 file.

My understanding is that this setup should see low 6s or high 5s based on three cars running similar setups.

I have ER downpipes (not Keller) and no other mods.

Just curious what gives? Is it my fuel? Do I need the bigger 3.5" downpipes? Do I need an intake ? Is it an adaption thing? Why are my times in e30 so slow? I am going to try some other e30 maps (evolve and bm3) to see if I have similar issues.

However it was definitely not my expectation for the e30 map, which targets about 25 psi on boost to get slower than the 93 map

DME isn't sure either because this file is their fastest tune.

My timing seems low for e30

Here is a log of my 6.8 second run on e30 map. This was with about e35 blend (10 gallon Sunoco 93 and 5 gallon e85)

looking at trims this is more like E10-E15. As others mentioned the trims are not matching what E30 would normally run, your other log (the faster 60-130) was around 88%, vs 66% for your current in terms of total trims.

You need that Ethanol tester ASAP, running this low level of ethanol on 25 psi E30 tune while trying to chase numbers is a recipe for bad things to happen.

I'm surprised Mo at DME didnt call out the trims unless you didnt share the log.

If you have the storage you could always order 55 gallons of quality 85 and never have to worry what you're getting out of the pump.

[JBA87]

Originally Posted by FloridaM5

That's awesome. Def a good time there. All of my sub 6.6 second runs are in the 50s or 60s. Did a run the other day in 81 degrees and pulled off a 6.7...wasn't unhappy with that one. But iats were super high and didnt try again.

Will do re the meth kit. Def let you know.

Are you times on 93 or e30?

[JBA87]

Originally Posted by Bmwusabmw

looking at trims this is more like E10-E15. As others mentioned the trims are not matching what E30 would normally run, your other log (the faster 60-130) was around 88%, vs 66% for your current in terms of total trims.

You need that Ethanol tester ASAP, running this low level of ethanol on 25 psi E30 tune while trying to chase numbers is a recipe for bad things to happen.

I'm surprised Mo at DME didnt call out the trims unless you didnt share the log.

If you have the storage you could always order 55 gallons of quality 85 and never have to worry what you're getting out of the pump.

I'm gunna probably store some


I put a bunch of that pump e30 and it improved times into the 6.5-6.7 range


My best times were when I added a little more e85 to the pump e30


I wish there was a pump where you could just consistently get exactly the fuel you needed

Sigh

[FloridaM5]

Originally Posted by JBA87

Are you times on 93 or e30?

e30 (or at least what I thought was approx e30). Gonna scoop up 10 gallons of oneethanol this week and run it through. If it turns out I was missing some ethanol points will also store some. $350 per 54 gallons ain't bad at all.

Then with this meth kit, will look at iats as well. Evaluate cooling and fueling, and like you, would love to be in lower 6s.

[JBA87]

These are the weird codes I continue to throw

[JBA87]

Fuel and weather (it's now 73) has suiuchhhh a big impact on these cars (this run had some lower end wheel spin)

[onfireX5]

Originally Posted by JBA87

Fuel and weather (it's now 73) has suiuchhhh a big impact on these cars (this run had some lower end wheel spin)

Proper fuel blend of E brought the timing back up. Cooler weather helped as well.

[onfireX5]

Originally Posted by JBA87

Fuel and weather (it's now 73) has suiuchhhh a big impact on these cars (this run had some lower end wheel spin)

Do you have a IAT trace ?

[JBA87]

Forgive my ignorance, but What do you mean by an IAT trace?

If you mean the log from this run they were between 98and 110

[onfireX5]

Originally Posted by JBA87

Forgive my ignorance, but What do you mean by an IAT trace?

If you mean the log from this run they were between 98and 110

The inlet air temperature after the intercoolers. It's a JB4 logging parameter. Would tell more about the run.