[MasterWang]

Originally Posted by 924er

your expecting way too much HP for having a fully stock car with only a DCI and JB4, even with e85 your no where near those numbers. Especially with our crappy stock intercooler. Maybe full bolt ons with e85 and the right tune will get you around 400ish, but u definitely need more mods than just a DCI.

People have dynoed 400whp with just jb4, dci, and e85.
FBO with e85 would be in the 450whp range.

[stanlalee]

he is not expecting too much 924....

tons of people make power, its all about the tune. PRIME example of proven gains with lots of factory components is Terry at BMS he made 481whp on an E92 with just JB4, BB flash, BMS DP, BMS DCI, CPE BOV, CPE IC,. Factory catback system & midcats. $100 inline fuel pump.

unless his Charge pipe added horsepower and his FMIC and 100$ fuel pump are good for 80+ to the wheeels... yeah its perfectly possible....

dont spread bad gouge man, not with all the resources we have on this forum.

Yes but um... He's expecting way too much hp lol. There is ZERO reason to believe a 17psi max auto tune and stock charge cooling is going to produce 400whp. Perhaps with e60, some sort of charge cooling (big intercooler or method) and custom mapping (or turbo killer tune) you could approach 400whp but I haven't seen one yet break 385whp without DPs. And BMS doesn't just slap on parts and get those numbers they dyno tweak the mapping...and I think their dyno is a Lil happy lol

[Mpowerrr]

Originally Posted by edo

+1

???

I think map 5 is 12-17psi depending on your mods.
I don't see why you can't use map 1 or 2.
And right now I'm actually running map 2 with no problems at all.
Tomorrow I'm putting the DP and at the same time just keep it at map one until I get an upgraded CP at least.

[edo]

So if means if I add a bit of E85, it just raises my octane number and I can run more boost? No other adjustments needed for the map?
I have Vishnu, so my question is if I can run the pump gas map and just raise boost a bit.

Originally Posted by e92_enthusiast_1

Pretty sure to take full advantage of e85 you need a e30/e40 specific map. For me in AZ, I have to start using it for my 91 map because I'm getting some timing issues during shifting/low load cause the 91ACN gas we have isn't even good 91 gas.

I have the same issue - timing drops. So I can add a bit of E85 and it should solve the poblem if I keep the same boost levels? Btw, I have timing drops even with 15-16 PSI of boost (FBO, RB turbos).

[e92_enthusiast_1]

Definitely raise the octane and help with timing. See the links below for my before and after datalogs. Timing is better by a lot. Not sure if that's as good as it will get /shrug


Stg 2 FMIC+ ST Sport 91 ACN w/ timing corrections a lot

Stg 2 FMIC+ ST Sport 91ACN + e85 corrections minimal

Originally Posted by edo

So if means if I add a bit of E85, it just raises my octane number and I can run more boost? No other adjustments needed for the map?
I have Vishnu, so my question is if I can run the pump gas map and just raise boost a bit.

I have the same issue - timing drops. So I can add a bit of E85 and it should solve the poblem if I keep the same boost levels? Btw, I have timing drops even with 15-16 PSI of boost (FBO, RB turbos).

[edo]

Originally Posted by e92_enthusiast_1

Definitely raise the octane and help with timing. See the links below for my before and after datalogs. Timing is better by a lot. Not sure if that's as good as it will get /shrug

Thanks. So up to 30% of E85 mix with pump gas is OK with stock fuel pump? And no need to use special E85 mix map?

[e92_enthusiast_1]

Correct. About 5 gal if youre filling up rest to max with supreme/premium . So like 5 gal e85 + 10 or 11 gal 91 oct my run was like 4 gal e85 cause I just wanted to play it safe.

Originally Posted by edo

Thanks. So up to 30% of E85 mix with pump gas is OK with stock fuel pump? And no need to use special E85 mix map?

[stanlalee]

Originally Posted by edo

Thanks. So up to 30% of E85 mix with pump gas is OK with stock fuel pump? And no need to use special E85 mix map?

Well as stated the advantage of ethanol is the ability to add boost and timing due to its knock resistance so without a special mix tune your not getting all you can out of it. Matter of fact if your not getting corrections using 93oct your only getting a small bump from the cooling properties and using a lot more gas. Not worth it IMO unless you were getting corrections that ethanol mix fixes (which kind of makes it an ethanol tune for your car) or you get tuned for it to take advantage of the anti knock properties. Auto tuning maps sort or do that.

[edo]

Originally Posted by stanlalee

Well as stated the advantage of ethanol is the ability to add boost and timing due to its knock resistance so without a special mix tune your not getting all you can out of it. Matter of fact if your not getting corrections using 93oct your only getting a small bump from the cooling properties and using a lot more gas. Not worth it IMO unless you were getting corrections that ethanol mix fixes (which kind of makes it an ethanol tune for your car) or you get tuned for it to take advantage of the anti knock properties. Auto tuning maps sort or do that.

I do have timing drops (thread: http://www.e90post.com/forums/showthread.php?t=774099) so I hope E85 will solve it.
I would run E85 mix map/ECU file, but:
1) I have Vishnu and there's no E85 map available.
2) I have w e d g e performance ECU reflash files for E85 mix (E30 and E50), but a) I don't know how to set Vishnu just to control boost; b) I would have to run E85 mix all the time and switching between pump and E30/E50 ECU files each time is PITA...

[924er]

Originally Posted by MasterWang

People have dynoed 400whp with just jb4, dci, and e85.
FBO with e85 would be in the 450whp range.

can u please show me? I'm not trying to prove you wrong i really hope ur right lol its just really hard to believe a car that is fully stock with just a DCI which isn't really a the best mod. adding 100hp with just jb4?? thats impressive , e85 just gets rid of timing corrections and won't exactly add more power.

I have FBO cobb , maybe cobb numbers are much lower?

[TrAcK TRaP]

Originally Posted by e92_enthusiast_1

+1, its THE n54 bottleneck for sure. I'm close to 400hp on 91 gas but its with everything:

Catless DP
FMIC upgrade
DCI
cP-e metal charge pipe
Stg2 FMIC+ ST Sport Map

are you serious? my car made 403 hp with cobb e30 map. and stage 2+ sport is around 360-365.. Maybe something is wrong with my car

[e92_enthusiast_1]

Idk man. Maybe I'm reading the dyno page wrong. Its in my garage, check it out. It says something like 380whp 397 corrected? Also I've read this dyno is nicknamed "heartbreak dyno" cause it comes out lower? Idk too much about that. Just what the tune shop said. With an e30 map I'm sure I'd get +30 or +40 HP?

Originally Posted by N54CherryHill

are you serious? my car made 403 hp with cobb e30 map. and stage 2+ sport is around 360-365.. Maybe something is wrong with my car

[MasterWang]

Originally Posted by 924er

can u please show me? I'm not trying to prove you wrong i really hope ur right lol its just really hard to believe a car that is fully stock with just a DCI which isn't really a the best mod. adding 100hp with just jb4?? thats impressive , e85 just gets rid of timing corrections and won't exactly add more power.

I have FBO cobb , maybe cobb numbers are much lower?

There used to be a thread showing tune, dci, and e85 making 400whp over at n54tech.com, but a lot of the threads on that site are gone now :/
There are plenty of fbo e85 dynos around if you just youtube or google.
I was confused about these numbers too so I emailed Terry earlier this year.

These were his replies

"400rw+ with a dci and e85 mix or race gas is par for the course these days"

"On dynojets typically 400rw+ with a DCI, or 440rw+ when downpipes and intercooler are added."

The huge bump in power comes from running more boost with e85.
With pump gas I use map 1 (13psi)
With e85 I use map 7 (18.5psi)

[Miko226]

Originally Posted by Pr335bob

No different map required or anything? Just e85 and go?

Map 5 on JB4 will adapt to added octane and you will notice the adaptation. Essentially you dont need to change maps however you wont notice very much power increase

[OB]

Originally Posted by Mpowerrr

Last night I pumped 4 gallons of e85, approximately 25%.
I drove around for 10 minutes before really pushing it.
Holy shit!!! I just hope I don't get another speeding ticket lol.

So the mods that I currently have are
Jb4 g5iso.-map5
Dci
Exhaust delete
And I recently took off my DP for warranty but will be putting them back on soon.

On average, what can I expect with my current mods? Close to 400hp maybe?
I plan on doing a dyno sometime this month. W/e85 and with e85.

Any advise?
Thanks

[Ph3n0m]

Yeah I'd bet with e85 you're closing in on 400hp. I run 3 gallons, map 5, get a few 3rd gear pulls to get it to tune as optimally as possible (2500rpm, WOT to redline). You may need to datalog and talk with BMS if you get an overboost or other kick to map 4.

The charge pipe is a good idea, I'm running until mine blows or I get some extra money, but I have a spare car. Otherwise it might be nice for piece of mind.

Otherwise, the FMIC is another good idea. You'll definitely get heat soak. I was jumping up 20-25 degrees on my IAT's in 80 degree weather. That's crazy. Inconsistent HP is what you get with the stock FMIC. You won't see a huge HP gain from this tho.

DP is the big HP booster after this. IMO, i don't know what the hell I'd do with downpipes. I can't get my power to the ground. Wheel spin in 1st, 2nd, and a good bit of 3rd. So if I was really into driving this car hard I'd look into suspension and other ways to get traction. A LSD would be great, bigger tires, better shocks/springs/coils...

[Myrder]

Originally Posted by e92_enthusiast_1

Idk man. Maybe I'm reading the dyno page wrong. Its in my garage, check it out. It says something like 380whp 397 corrected? Also I've read this dyno is nicknamed "heartbreak dyno" cause it comes out lower? Idk too much about that. Just what the tune shop said. With an e30 map I'm sure I'd get +30 or +40 HP?

Hey looking at your dyno in the AZ section ( I saw it earlier) it shows 397hp at the flywheel and 370rhwp, which is accurate for 91oct and roughly 16psi.

Running E30 will bump you up to over 400rwhp.

[iturbo_bmw]

lol...

Don't talk about how much horsepower your car has if you haven't dyno'd it people!!

fbo + e85 will get over 400hp, dci +e85 probably won't

also when someone says they are running e85, you need to look at how much. theres a big difference between E30 and E70 k

[924er]

does anyone here cycle a tank of regular pump gas just to clean the system out of e85?

if so do u switch maps or just baby it until the u get filled with e85

[stanlalee]

Originally Posted by 924er

can u please show me? I'm not trying to prove you wrong i really hope ur right lol its just really hard to believe a car that is fully stock with just a DCI which isn't really a the best mod. adding 100hp with just jb4?? thats impressive , e85 just gets rid of timing corrections and won't exactly add more power.

I have FBO cobb , maybe cobb numbers are much lower?

http://www.e90post.com/forums/showthread.php?t=729923]

Oh they exist BUT with custom tuning, a whole lot of boost, e85, timing and stout A/F ratio. Your not going to get this with off the shelf tuning nor would I feel comfortable running that much hp with stock like IAT. I ran e30 with Vishnu stage 1 tune with the fuel scalar adjusted for e30 using the Cobb table (since ethanol requires more fuel). Well after getting bored with the stage 1 like performance while using ethanol and after reading the above thread and elsewhere I basically started with the e40 map and detuned along the lines of way less aggressive than the OTS e40 but quite a bit more aggressive than stage 1 in the lower/midrange timing and A/F ratio (also bumped up to e35-e40 range). I don't want to proclaim its safe on a stock car with drop in filter as I have but I'm not getting timing drops or any logs that suggest the car doesn't like it (dare I say timing correction was much worse on stage 1 with e30) and boy what a difference. Top end has not changed much but top end boost and timing are similar to stage 1 (stage 1 already hits 12 deg of advance) and I have an intercooler on the way

[MasterWang]

Originally Posted by 924er

does anyone here cycle a tank of regular pump gas just to clean the system out of e85?

if so do u switch maps or just baby it until the u get filled with e85

I cycle a tank of pump sometimes because I can't always get to the e85 station. Sometimes I put in a bottle of techron concentrate when I run just pump gas even though some people say it doesn't help much.

I can't comment on the maps because I don't know much about Cobb tunning.
With my Jb4 I put it to map 4 (disables jb4) and baby the car until I fill up with e85. This is only because I have the e85 backend flash.

[DJ335]

Just tried E85 same mix as OP (25/75). Can anyone help me interpret my logs. First attempt at data logging and unsure how to interpret numbers as safe or not. Didn't have much open road, but hopefully still some useful data.

Thanks