[Deadwrong]

Originally Posted by 805beemer

Does anyone with fbo running the new map 5 also have a cobb? If so how does it compare to Stage 2+ aggresive? I'm getting impatient waiting for a meth map and might just have to buy me a jb4. Plus I already run 60/40 91/e85

+1

[Alessandro]

Originally Posted by remington109

FWIW: this is the response I got from Cobb

"Also note that E85 does not have the same lubrication properties as normal petrol does which could ruin the seals of your fuel pump and cause it to fail."

as far as internal seals and gaskets (Fuel and Engine System) they are all tested to withstand the E85 trust me i know

pm for details if needed

[Stucks]

Originally Posted by Alessandro

pm for details if needed

pm'd

[remington109]

Originally Posted by Alessandro

as far as internal seals and gaskets (Fuel and Engine System) they are all tested to withstand the E85 trust me i know

pm for details if needed

I wouldn't mind knowing the details. I have no idea either way...I just know what I was told by Cobb. And since they have no race gas maps yet anyways, I hadn't really done much research.

[2jzn54]

Originally Posted by Fundahl

He's saying it feels like a new car, acceleration wise. Basically agreeing with what you said.

Ah yes it does run incredibly smooth and pulls like a freight train (i've used freight train wayy too much in the past week).

[remington109]

Originally Posted by mykal335xi

Haven't been to the strip, but vbox is very accurate on ET and just a bit high on MPH (~1mph at my local track).

I ran a 12.2 @ 114 tune only + 40/60 e85/93 mix. From what I can tell it's basically the same as map 7 on race fuel, without the cost of race fuel

Do you have a run on 93 no e85/meth for comparison?

[Fundahl]

Originally Posted by remington109

Do you have a run on 93 no e85/meth for comparison?

I'm gonna guess around 12.8@110mph.

[amclint]

Originally Posted by remington109

Do you have a run on 93 no e85/meth for comparison?

93 map 2 is good for 12.6 @ 110 in my car full weight, never tried on race weight.

[rooringhusky]

Originally Posted by 805beemer

Does anyone with fbo running the new map 5 also have a cobb? If so how does it compare to Stage 2+ aggresive? I'm getting impatient waiting for a meth map and might just have to buy me a jb4. Plus I already run 60/40 91/e85

I had Cobb before...dont have any slips or anything to confirm but to be honest there isn't even a comparison butt dyno wise..the Cobb Stg2+ Aggressive 93 octane will be owned by a JB4 on 50/50 91/E85...

I ran Cobb for about 4 months...last week or so has been on JB4 5/11 firmware with about 30-35% mix of E85 to 91...I'm not even running a 50/50 mix yet and it's killing the car when it was running Cobb...Top end is redic it pulls all the way to redline strong and almost never dies off like any other pump gas tune that power dies at around 6100-6200 rpms..

Just take what I said with a grain of salt thought we are comparing "race gas" on JB4 vs pump gas on the Cobb so obviously there should be a clear cut winner...now when Cobb puts out their race maps and meth maps things should get more fun

[805beemer]

Originally Posted by rooringhusky

I had Cobb before...dont have any slips or anything to confirm but to be honest there isn't even a comparison butt dyno wise..the Cobb Stg2+ Aggressive 93 octane will be owned by a JB4 on 50/50 91/E85...

I ran Cobb for about 4 months...last week or so has been on JB4 5/11 firmware with about 30-35% mix of E85 to 91...I'm not even running a 50/50 mix yet and it's killing the car when it was running Cobb...Top end is redic it pulls all the way to redline strong and almost never dies off like any other pump gas tune that power dies at around 6100-6200 rpms..

Just take what I said with a grain of salt thought we are comparing "race gas" on JB4 vs pump gas on the Cobb so obviously there should be a clear cut winner...now when Cobb puts out their race maps and meth maps things should get more fun

Well that does it, I'll be ordering a juice box today! Thanks for the review. Does your jb4 have the 15 ohm mod?

[rooringhusky]

Originally Posted by 805beemer

Well that does it, I'll be ordering a juice box today! Thanks for the review. Does your jb4 have the 15 ohm mod?

You wont be disapointed...!!

Right now my JB4 is the standard 18ohm just like it came...Hopefully soon ill change out to 15ohm or just upgrade to the new G5 board altogether and save the hassle..

[Akopley]

it works pretty well. brake boosted in 2nd to about 2.5k.

[bigdnno98]

Originally Posted by rooringhusky

I had Cobb before...dont have any slips or anything to confirm but to be honest there isn't even a comparison butt dyno wise..the Cobb Stg2+ Aggressive 93 octane will be owned by a JB4 on 50/50 91/E85...

I ran Cobb for about 4 months...last week or so has been on JB4 5/11 firmware with about 30-35% mix of E85 to 91...I'm not even running a 50/50 mix yet and it's killing the car when it was running Cobb...Top end is redic it pulls all the way to redline strong and almost never dies off like any other pump gas tune that power dies at around 6100-6200 rpms..

Just take what I said with a grain of salt thought we are comparing "race gas" on JB4 vs pump gas on the Cobb so obviously there should be a clear cut winner...now when Cobb puts out their race maps and meth maps things should get more fun

+1. I had Cobb too. Cobb stage 2+ aggressive is comparable to the old map 2 no meth/e85. The new map 5 with 50/50 e85 will smoke Cobb. Map 3 with meth and 50/50 e85 is on a whole different level.

[brandontoscano]

Originally Posted by Akopley

it works pretty well. brake boosted in 2nd to about 2.5k.

Crazy fast! I timed about 3.5 seconds, on average. What other mods do you have and what tires/wheels are you on?

[EASTCOASTNINJA]

Hey got a question just bought JB4 in May from BMS, does that come with latest firmware? If so can I just run 100% E85 or do I have to do 30/70 mix? My mods are JB4 map 5, DCI, DPs, and no cats or mufflers. Thanks

[805beemer]

Originally Posted by EASTCOASTNINJA

Hey got a question just bought JB4 in May from BMS, does that come with latest firmware? If so can I just run 100% E85 or do I have to do 30/70 mix? My mods are JB4 map 5, DCI, DPs, and no cats or mufflers. Thanks

The firmware for the new map 5 is still in alpha so you would have to go to n54tech and download it. Just got my jb4 installed yesterday. Once I have some more time behind the wheel I'll post a review/comparison.

[EASTCOASTNINJA]

Originally Posted by 805beemer

The firmware for the new map 5 is still in alpha so you would have to go to n54tech and download it. Just got my jb4 installed yesterday. Once I have some more time behind the wheel I'll post a review/comparison.

Ok so just plug it in and download? Do u know the link?

[rdeterman]

Originally Posted by EASTCOASTNINJA

Ok so just plug it in and download? Do u know the link?

you will have to download the hex file and then upload it into the jb4. Also you should only run a max of 50/50 91/E85 mix..

Heres the link:
http://www.n54tech.com/forums/showthread.php?t=15846

[EASTCOASTNINJA]

Originally Posted by rdeterman

you will have to download the hex file and then upload it into the jb4. Also you should only run a max of 50/50 91/E85 mix..

Heres the link:
http://www.n54tech.com/forums/showthread.php?t=15846

Ok cool thanks, I might not do E85 but im prob doing 110 since that's what we got at the pump here

[Akopley]

Originally Posted by brandontoscano

Crazy fast! I timed about 3.5 seconds, on average. What other mods do you have and what tires/wheels are you on?

DCI, JB4, RL DP's, stock RFT

[5soko]

Some brave souls out there throwing that 50/50 E85 lol..

Friday or monday, depending upon work will be my first E85 trial, gonna keep everything consistent and do a full tank of a E85 30% to 70% 93 tank..

[Akopley]

Originally Posted by 5soko335i

Some brave souls out there throwing that 50/50 E85 lol..

Friday or monday, depending upon work will be my first E85 trial, gonna keep everything consistent and do a full tank of a E85 30% to 70% 93 tank..

Brave/Fast soul