Gintani & RK Tunes E85 tune

[Phat55]

How do these compare with each other? With regards to HP and 1/4mile times they seem to be on par with each other. Price wise RK is abit cheaper.

Driveablity etc?

[codinge90]

I can comment on the gintani tune, don't know anyone running the rk ones but honestly they're going to be super similar in my opinion.

Tune: cold start cranks are long. Most of the time it won't start on first crank you'll have to press the start button a couple times. Sometimes the car will die/stall when you start it right away. Let the car sit for a few minutes when you start it as well, if you put it in drive right away you have a chance of stalling/car dying within 10-20 feet. Happened to me outside my street quite a few times. Other thing to notice is if you drive in D mode and step on the throttle, you'll misfire like crazy depending on what transmission setting your in. If your in a low setting and apply like 3 quarter throttle when your in 5th-7th gear it'll misfire and you'll throw a SES light. Restarting the car will make that go away. This may be a spark plug issue but they were changed like 15,000 miles ago. Other than the notes above the tune runs completely fine and there's definitely a noticeable difference in power. I pulled on an stock f80 m3 from 40-150. He caught up to me and was even at about 150-160. Multiple runs done. My setup was fully catless x pipe, stock muffler and gintani tune with e85. Stock pulleys and intake.

[Properstyle]

That sounds horrible. E85 cool starts should n be that bad on a good tune. My z runs full E85 yes I’ve gone. The first start stall but it’s not s wait mins things it’s s restart the car and it idles perfectly on its own. Maybe you should log your cold start and send that file o Alex for a revision as none of what you describe our side of first start stall is normal.

[codinge90]

Originally Posted by Properstyle

That sounds horrible. E85 cool starts should n be that bad on a good tune. My z runs full E85 yes I’ve gone. The first start stall but it’s not s wait mins things it’s s restart the car and it idles perfectly on its own. Maybe you should log your cold start and send that file o Alex for a revision as none of what you describe our side of first start stall is normal.

In my research longer cranks were normal with 100% e85. I even brought it up to gintani and they said that's normal. I've talked to a few other people with the same tune and they all have the same thing, usually second crank and it starts up.

[Properstyle]

Having to let the car sit for a few mins before trying and again and then miss fires under cruising while still in warm up a not normal at all. Read your post again to your self and ask you self if what you actually wrote pass start up seems even remotely normal. Gtrs and f80m3 335is etc all full E85 don’t have miss firing during what you described.

[codinge90]

Originally Posted by Properstyle

Having to let the car sit for a few mins before trying and again and then miss fires under cruising while still in warm up a not normal at all. Read your post again to your self and ask you self if what you actually wrote pass start up seems even remotely normal. Gtrs and f80m3 335is etc all full E85 don't have miss firing during what you described.

Let me clarify because I agree with you. The only part i thought was normal was the longer cranks with running 100% e85. For the waiting part, I said after you get it started let the car sit a minute or 2 before you start driving not letting the car sit if you can't start it. Also I agree with you the misfire issue isn't normal. The misfire issue I think is related to the crappy dct upshift issue in D mode. There's multiple threads on it being laggy upshifting in normal drive with throttle response, I think it's highly due to that and the car just freaks and hits limp mode. But maybe someone else can chime in with a similar problem with the tune. On 91 it did something similar but it's more of a lag to upshift than a misfire.

Also to add something else with e85 talk I had a friend running the AFD kit on his M with 70% e85 and they had similar cranks. Not as bad but they were longer than stock

[Properstyle]

Have never had any up
Shift issue out of the 3 e90ms I’ve had all supercharged and Na combos. You may want to check your dct fluid and filter but even in d with it set to 4 no issues driving away after starting. I normally let my car run for about 45 seconds to a min before I drive off just to allow oil to warm up.

[codinge90]

Originally Posted by Properstyle

Have never had any up
Shift issue out of the 3 e90ms I’ve had all supercharged and Na combos. You may want to check your dct fluid and filter but even in d with it set to 4 no issues driving away after starting. I normally let my car run for about 45 seconds to a min before I drive off just to allow oil to warm up.

Already have, the Dct pan was shown sweeping fluid at my time of purchase to it was replaced under warranty a year ago. As I mentioned this is a common issue with dct cars, many threads on this topic. Resetting adaptations helps a lot. If you drive in a higher transmission setting it fixes the problem but kind of defeats the purpose of the lower settings if you don't want shifting to be aggressive

[opihi5]

All of this is what you get when switching to e85. When i ran the AFD kit i would try to only put in about 60-70% to avoid the long starts. On gintani e85 now it takes around 3 tries to start my car after sitting for a few days. First crank ill let it go for about 3 seconds and stop. Then itll crank over and stall. Third crank it will start and run.
The only other problem is when you put it in D the car will shift below 2k and if you give the car load under that rpm it will misfire(bad to accelerate below 2k rpm anyway).

I really wish they could fix the stalling problem on second crank beacuse its kind of embarrassing.

I came back to e85 because of how terrible 91 is compared to it.

[Patrón]

is there really that much of a power difference between e30-50 and e85? i think i'd stick to a better tune or e35+/-

[Phat55]

Some good insight with regards to the Gintani tune. I wonder if the RK tunes tune has the same starting issues etc

[Dave07997S]

Originally Posted by Patrón

is there really that much of a power difference between e30-50 and e85? i think i'd stick to a better tune or e35+/-

Thats my thinking as well. I think once you get to the point of E35 its a diminishing return with just more issues for driveability.
Dave

[maristgrad09]

I have the RK e85 tune and in the winter the car will take about 7 seconds to start. Once it does you're ok to drive. In the warm weather it starts up just fine.

[Phat55]

Originally Posted by maristgrad09

I have the RK e85 tune and in the winter the car will take about 7 seconds to start. Once it does you're ok to drive. In the warm weather it starts up just fine.

And how’s the performance?

[maristgrad09]

Originally Posted by Phat55

And how’s the performance?

Night and day. I came from ESS.

My stock up was 335whp. I put down 398 without an upgraded intake.

[Phat55]

Originally Posted by maristgrad09

Night and day. I came from ESS.

My stock up was 335whp. I put down 398 without an upgraded intake.

is yours a custom e85 tune?

[maristgrad09]

Originally Posted by Phat55

is yours a custom e85 tune?

Yes it is

[Phat55]

Originally Posted by maristgrad09

Yes it is

Aaah okay so I guess the OTS e85 tune won’t be as good

[Ghost_M3]

Would I need a e85 tune to run just a 30% mixture? Have read that you can run low amounts on a stock tune/ injector set up but feel like that might be false info.

[Dakar Bam]

Originally Posted by Ghost_M3

Would I need a e85 tune to run just a 30% mixture? Have read that you can run low amounts on a stock tune/ injector set up but feel like that might be false info.

I use to run e30 mix and it was very inconsistent. With regards to power and when I log timing. But the most power I have ever gotten was with e50 and I wasn't tuned for that amount. However it was just after I loaded a new tune so adaptions wasnt set.

[m3gasm]

Hi,
I've ran an RKTunes, tune in my E92 M3 for over 100k miles...
With that being said, I've had over 15 of his tunes in my car

When it comes to E85:
I've had non burble, mild burble, and violent gunshot burbles

I ran all of his e85 tunes for over a year straight... and let me tell you something.
Besides in his earlier e85 tunes and taking to attempts to start the car on cold start...
My car has ran flawless.
After 12 months of running it i did not have 1 problem
I'd switch maps at gas stations with the tablet he supplied if i wanted too change my burbles
I have also dynod at 400whp when i was FBO. at EAS

My roommate had gintani. However he did not run e85 ($500) on top of the actual regular tune price with gintani due to some horror stories we've had with friends.. not going to get into it since it wasn't me personally.

Now that i have ESS625 i am going back to Jordan at RKTunes for another one of his tunes

I've use him for years, and will never switch.
He's awesome.
Revisions came to me regularly upon request (if he had a revision)
I'll post pics of Dyno and some e85 flames from his aggressive burble tune. Which i ran over a year.
Included is my 138k miles rod bearings done at SSR performance. Car had 40k miles of e85

Also note i did not use AFD flex fuel or anything
Full e85 tune in STOCK FUEL SYSTEM
I would get the tank from my 91 oct fuel to 0-5miles left then fill with e85 and change tune at the gas station pump. Only takes 3min to upload a tune from the tablet supplied by RKTunes

[8500RPM]

Originally Posted by m3gasm

Hi,
I've ran an RKTunes, tune in my E92 M3 for over 100k miles...
With that being said, I've had over 15 of his tunes in my car

When it comes to E85:
I've had non burble, mild burble, and violent gunshot burbles

I ran all of his e85 tunes for over a year straight... and let me tell you something.
Besides in his earlier e85 tunes and taking to attempts to start the car on cold start...
My car has ran flawless.
After 12 months of running it i did not have 1 problem
I'd switch maps at gas stations with the tablet he supplied if i wanted too change my burbles
I have also dynod at 400whp when i was FBO. at EAS

My roommate had gintani. However he did not run e85 ($500) on top of the actual regular tune price with gintani due to some horror stories we've had with friends.. not going to get into it since it wasn't me personally.

Now that i have ESS625 i am going back to Jordan at RKTunes for another one of his tunes

I've use him for years, and will never switch.
He's awesome.
Revisions came to me regularly upon request (if he had a revision)
I'll post pics of Dyno and some e85 flames from his aggressive burble tune. Which i ran over a year.
Included is my 138k miles rod bearings done at SSR performance. Car had 40k miles of e85

Also note i did not use AFD flex fuel or anything
Full e85 tune in STOCK FUEL SYSTEM
I would get the tank from my 91 oct fuel to 0-5miles left then fill with e85 and change tune at the gas station pump. Only takes 3min to upload a tune from the tablet supplied by RKTunes

Damn you're gonna make me go with an RK E85 tunes with this post. Nice stuff!