questions regarding jb4 and e85

playerbase

Member
Joined
Apr 19, 2021
Messages
78
Reaction score
21
Points
8
Hopefully, this is in the right section, if not could someone please move it :)
Sorry if this sounds really dumb, I'm still learning.

I have plans of purchasing a jb4 and read that on the higher maps, I believe it's map 3 and 4 where there is an e85 and 93 mix?
The question I had regarding this was, I drive approximately 500-600 miles a week on my car, if I'm running a e85 and 93 mix to get e30 (I believe it is e30 that is ideal). Would I damage the vehicle in any sort of way since I'm not going to be pushing the car while I'm just commuting? Pretty much, not pushing the car as much so not as much boost to really make use of the higher octane in the car, or at least that's my thought process behind it.

If I'm running a mix but not pushing the car how bad would the drop in fuel economy be?
Is it possible to run full e85, or well flex-fuel in our Stingers? (it's hella cheap compared to 93 here)
On a side note though, with the jb4 I want to be around 400-450whp, other than intakes (already have this) and better sparkplugs, what else would I need to do to reach in that range of 400-450whp? (I have an 18GT)
 
Just use the E-Blend when you are going to be doing sporty driving. Otherwise use 93 and bomb around on map2. If you get much beyond E30 your HPFP will crash.
 
Just use the E-Blend when you are going to be doing sporty driving. Otherwise use 93 and bomb around on map2. If you get much beyond E30 your HPFP will crash.
Say that I use the E-Blend whilst on a full tank, do I need to be driving in a sporty fashion until that tank is almost empty?
 
______________________________
Say that I use the E-Blend whilst on a full tank, do I need to be driving in a sporty fashion until that tank is almost empty?
No. But you will.
 
From interior to exterior to high performance - everything you need for your Stinger awaits you...
Not seen any reliability issues crop up on E30-E40 mixtures.
 
I averaged 27 MPG with a JB4 on map 0 on 93 octane in comfort mode on a trip to Seattle doing 80mph+. I definitely get worse driving in Map3-4 on E30+ but that's expected as I only run that Mix when I'm Hooning around . I've only run through 2 full tanks of Mix but I just got my Jb4 2 months ago and the Stinger is not a DD.
I usually just run map2 on 93 octane and seem to get the manufactures MPG rating under "Normal" conditions. Although its hard to stay in "Normal" driving conditions
 
How are you liking the jb4 so far? I'm about to get mine.
Personally I really like mine especially on E30. Seriously though it’s a great piggyback that comes with exceptional support. I will eventually go with a proper tune but even then it will still be a great tool for logging etc. But if you don’t have access to 93 or better you’re not going to get the most out of it.
 
Not sure if I should post here or in the Burger Tuning forum but this seems more recent.

Reading through all the forums got me extremely excited about the benefits of the JB4 platform on my car but I'm honestly a little less than impressed which makes me think I have done something wrong.

Install seems to be good, logs on map1 and 2 both to Burger Tuning with positive responses that everything looks good yet I'm not getting the same excitement with the performance of the car as it only feels like a minimal power increase compared to everyone else's excitement. Is my butt Dyno just that bad? I should mention I'm in Colorado at above 5000ft. altitude.

Logs attached. The 20th is map1 and 22nd is map 2.

Thanks so much to all of you who have so much experience with this and helping out a noob.
 

Attachments

______________________________
From interior to exterior to high performance - everything you need for your Stinger awaits you...
Hmm your Butt Dyno must be broken. Do you sit on your wallet when you drive.
With your mods and the Jb4 you should be hitting nearly 450hp on map3 . Even Map2 should be 420ish which was instantly noticeable from stock on my GT AWD. What fuel are you able to get. You could most likely step to Map3 or even possibly as high as Map5 if you can get a good E30+ mix. If you don't REALLY feel it then something isn't working or you don't have a pulse.
Out of all the cars I've ever Modded the Jb4 is hands down undisputed the MOST noticeable I have ever done . More noticeable then my WJ Grand cherokee going from 4.0 straight 6 to a built stroked 4.7 straight 6 with over 150 plus more HP and 190 more TQ.
 
Thanks so much for the response - I appreciate your time!

I get what you're saying. Just to retest and verify, after reading almost the entire Burger Tuning JB4 thread this morning, I went for some more runs. I've learned quite a bit about the JB4 through that thread and am hopefully putting it to use.

After a number of 0-60 pulls, both on map0 and again on map2, the timing, AFR, and boost curves look almost identical with map2 having a few more pounds of boost. Between a map0 and a map2 0-60 I would expect a bigger difference. The app shows .1 of a second. It was .1 of a second faster in map2 vs. map0.

Makes me think my butt Dyno is okay and I've missed something in installing/configuring the JB4.
 
I'm sure more expert opinions will chime in eventually but I'm thinking you can't really judge the difference on a flat 0-60 pull.
Your not really that hard into boost from a stand still as the car won't build boost right off the line. I think it's something like 2 pounds at launch and then ramps up progressively .If you have the Brake snip mod or Brake switch mod or a TCU mod I think you would really see the 0-60 time drop. Because you can actively build more boost before and at launch. Are you using launch mode , sport , paddle shifting ? Also I'm not sure how accurate the 0-60 on the JB4 log is. Almost everyone uses a Draggy for accurate 0-60 readings.
If your numbers are good ( i see a few 4.5s) try Map3. What fuel are you running? ( edited, as you are running only 91 I would not try map3 , or follow Burgers advice after contacting directly)
Where the JB4 shines initially(without TCU) is higher in the power band . Think more like 30 to 140 mph range.
I know all my first pulls I rolled in 3rd gear at 2000k and stood on it until 120mph after the shift to 6th I think. That's where I really felt the difference. It really pulls hard all the way to the redline and then shifts and does it all over again.
I deleted most of my logs on accident and now there is snow on the ground so the Stinger is in the warm garage getting chassis and suspension upgrades over winter.
I plan on doing a TCU flash over the winter as well so that will be exciting.
 
Last edited:
That makes sense. I guess I just figured I would install it and immediately notice a performance improvement - have it glue me to the seat or something and it doesn't feel the way. I noticed no difference 0-80 in any of the three maps 0-2.

I'm currently running Conoco 91. When testing, it's just a romp on the pedal from a stop. Using LC bogs hard and I don't like it. All map runs are in sport mode.

Working with BT Support now.
 
Not sure if I should post here or in the Burger Tuning forum but this seems more recent.

Reading through all the forums got me extremely excited about the benefits of the JB4 platform on my car but I'm honestly a little less than impressed which makes me think I have done something wrong.

Install seems to be good, logs on map1 and 2 both to Burger Tuning with positive responses that everything looks good yet I'm not getting the same excitement with the performance of the car as it only feels like a minimal power increase compared to everyone else's excitement. Is my butt Dyno just that bad? I should mention I'm in Colorado at above 5000ft. altitude.

Logs attached. The 20th is map1 and 22nd is map 2.

Thanks so much to all of you who have so much experience with this and helping out a noob.
Map 1 you’re probably won’t notice a lot. Your Map 2 log only has a couple little baby touches to WOT maybe that’s why your butt don’t feel anything. In Map 2 try WOT from 2nd gear all the way through 4th or 5th. If your butt doesn’t feel that, your sphincter sure will.
 
From interior to exterior to high performance - everything you need for your Stinger awaits you...
Thanks for the response! After working with BT support it sounds like it's the altitude that's my issue. The car is suffocating since I'm above 5000 ft. My only options to get the power I expect are octane boost, WMI, or E85 mix.

I ran a number of WOT pulls from 0-60 and as high as 80ish today. Still feels lackluster. Guess I need more mods.
 
______________________________
Not sure if I should post here or in the Burger Tuning forum but this seems more recent.

Reading through all the forums got me extremely excited about the benefits of the JB4 platform on my car but I'm honestly a little less than impressed which makes me think I have done something wrong.

Install seems to be good, logs on map1 and 2 both to Burger Tuning with positive responses that everything looks good yet I'm not getting the same excitement with the performance of the car as it only feels like a minimal power increase compared to everyone else's excitement. Is my butt Dyno just that bad? I should mention I'm in Colorado at above 5000ft. altitude.

Logs attached. The 20th is map1 and 22nd is map 2.

Thanks so much to all of you who have so much experience with this and helping out a noob.

Seems normal for 91 octane at high elevation. Not exactly a high power combination, lol. Some E85 mixed in and map2 should do wonders.
 
Seems normal for 91 octane at high elevation. Not exactly a high power combination, lol. Some E85 mixed in and map2 should do wonders.
Thanks for the follow up Terry! That's what Ando said as well. I'm due to fill gas here shortly and will throw 4ish gallons of E85 in the tank and see how it performs.

Much appreciated!
 
Back
Top