[prodigymb]

Originally Posted by limeypride

What he needs is Tesla Autopilot so he can literally get out of his own... way.

LOL

i wouldn't want to pull the seats either, but if I was that close I might consider it.

[limeypride]

Originally Posted by prodigymb

LOL

i wouldn't want to pull the seats either, but if I was that close I might consider it.

I'm thinking simpler: running the tank dry, two gallons of decent pure race gas and either map 7 or a slightly beefier map 6 and he's there.

New vanity plate when it does happen:

"9SECM5"
- or -
"BMW720S"
- or -
"9SDAILY"
- or -
"FUDEMON"

... I think I like the last the best; it's purposeful!

[prodigymb]

Originally Posted by limeypride

I'm thinking simpler: running the tank dry, two gallons of decent pure race gas and either map 7 or a slightly beefier map 6 and he's there.

New vanity plate when it does happen:

"9SECM5"
- or -
"BMW720S"
- or -
"9SDAILY"
- or -
"FUDEMON"

... I think I like the last the best; it's purposeful!

i wouldn't run fuel that low, it can slosh from G forces and cavitate the pumps. the factory basket volume is sized to supply enough for factory fuel demand. you got an extra 150-200hp so it will empty that basket quicker. also car pulls higher Gs modded... so the little fuel you have will be splashed on the back wall.

[FSociety]

Originally Posted by prodigymb

i wouldn't run fuel that low, it can slosh from G forces and cavitate the pumps. the factory basket volume is sized to supply enough for factory fuel demand. you got an extra 150-200hp so it will empty that basket quicker. also car pulls higher Gs modded... so the little fuel you have will be splashed on the back wall.

+100

[limeypride]

Originally Posted by prodigymb

i wouldn't run fuel that low, it can slosh from G forces and cavitate the pumps. the factory basket volume is sized to supply enough for factory fuel demand. you got an extra 150-200hp so it will empty that basket quicker. also car pulls higher Gs modded... so the little fuel you have will be splashed on the back wall.

Good to know. Thanks for the tip.

The principle still holds so what's the usable mechanically-happy minimum in the tank?

[FSociety]

Originally Posted by Hockeytyme

Getting close... Pull seats out, better DA or a prepped surface. Or just some good old fashion luck and maybe I can get a 9.. haha

What was your 60-130 run here and 0-60 ? That's crazy strong

[gpdriver17]

You should try running E20-E30. I swear it helps. C85 is supposed to generate more power than anything. Maybe add a few gallons of that to your tank to get that last .06 off the 1/4 mile. I'm doing meth injection (BMS kit) on Friday, hopefully will post some numbers this weekend. Was at a 10.2 on map 2, I'll go to map 7 if I have to. I want 9's!

Here's an article on C85 vs E85 vs race gas vs meth. In short, C85 > all. Someone needs to work on an E85 conversion for the F90s.
https://www.enginelabs.com/engine-te...inner-crowned/

[Hockeytyme]

Originally Posted by FSociety

What was your 60-130 run here and 0-60 ? That's crazy strong

My 0-60 on that run was not my best but pretty good at 2.57
My 60-130 was 6.27 which is frustrating. I have been in the low 6's and high 5's in the past. I just can't seem to get them all together in one run. I had a 5.91 and 6.17 last night as well on previous attempts but didn't get good launches. lol

[Hockeytyme]

Originally Posted by gpdriver17

You should try running E20-E30. I swear it helps. C85 is supposed to generate more power than anything. Maybe add a few gallons of that to your tank to get that last .06 off the 1/4 mile. I'm doing meth injection (BMS kit) on Friday, hopefully will post some numbers this weekend. Was at a 10.2 on map 2, I'll go to map 7 if I have to. I want 9's!

Here's an article on C85 vs E85 vs race gas vs meth. In short, C85 > all. Someone needs to work on an E85 conversion for the F90s.
https://www.enginelabs.com/engine-te...inner-crowned/

My old sand rail ran on 110 octane and Evo track car was full E85 conversion and I have used MS109 as well in some applications. Also, the shell station locally has VP101 which isn't as good as the MS109.

I'm not real familiar with the C85? Is that another version of corn oil?

I have heard of E20 and E30 but without researching I'm embarrassed to say I don't know anything about them. I'm starting to feel old. lmao

When, I'm going out on MS109 to try and get a low 1/4mi run I'm only starting with 5gallons for weight reasons and I stop around 2gallons. So, I don't have a lot of mixing room in there.

[prodigymb]

Originally Posted by Hockeytyme

My old sand rail ran on 110 octane and Evo track car was full E85 conversion and I have used MS109 as well in some applications. Also, the shell station locally has VP101 which isn't as good as the MS109.

I'm not real familiar with the C85? Is that another version of corn oil?

I have heard of E20 and E30 but without researching I'm embarrassed to say I don't know anything about them. I'm starting to feel old. lmao

When, I'm going out on MS109 to try and get a low 1/4mi run I'm only starting with 5gallons for weight reasons and I stop around 2gallons. So, I don't have a lot of mixing room in there.

i ran C85 when it first came out almost 10 years ago and i didn't like it, most guys I know that run ethanol for race fuel either use Ignite Red or Fuse E85R . When people say E20 and E30 that just means adding a few gallons of E85 to your tank now to bring the total content of ethanol to E30 (30%)...

if you want to try that route get a 5 gallon jug of Ignite Red and mix that in with pump gas. or you can try to mix in some VP Octanium, i have seen good results with that too.

[prodigymb]

Originally Posted by limeypride

Good to know. Thanks for the tip.

The principle still holds so what's the usable mechanically-happy minimum in the tank?

i never opened the M5 fuel tank so I don't know how and where the basket sits in it. for me comfortably i think at least 5-6 gallons in there to do long pulls. the modded acceleration G's are wild on these things, take a gallon jug of water and pour out about 80-85% of it. buckle it in to your front seat and launch the car, watch what happens with the water in it... same thing is going on in the gas tank. except they put a small basket inside the tank and the pump sits in it to minimize effects of this. as long as that basket manages to stay full everything will work perfect.

i use 2 bugatti veyron brushless pumps in my 997 for E85 and if the fuel level is below a certain point they will actually suck their big basket dry

[gpdriver17]

Originally Posted by Hockeytyme

My old sand rail ran on 110 octane and Evo track car was full E85 conversion and I have used MS109 as well in some applications. Also, the shell station locally has VP101 which isn't as good as the MS109.

I'm not real familiar with the C85? Is that another version of corn oil?

I have heard of E20 and E30 but without researching I'm embarrassed to say I don't know anything about them. I'm starting to feel old. lmao

When, I'm going out on MS109 to try and get a low 1/4mi run I'm only starting with 5gallons for weight reasons and I stop around 2gallons. So, I don't have a lot of mixing room in there.

C85 is just VPs version of E85. I've read multiple articles claiming it makes more power than E85, but maybe some of the other racing E85s are better. If you don't have it locally maybe try E85 if you can find it.

Here's a link that can help you find a gas station with it:
https://afdc.energy.gov/fuels/ethano...arest?fuel=E85

To make E30 you just add 1 gallon of E85 to every 3 gallons of pump/race gas. It doesn't have to be exact. I've definitely noticed a difference from running it though!

[prodigymb]

Originally Posted by gpdriver17

C85 is just VPs version of E85. I've read multiple articles claiming it makes more power than E85, but maybe some of the other racing E85s are better. If you don't have it locally maybe try E85 if you can find it.

Here's a link that can help you find a gas station with it:
https://afdc.energy.gov/fuels/ethano...arest?fuel=E85

To make E30 you just add 1 gallon of E85 to every 3 gallons of pump/race gas. It doesn't have to be exact. I've definitely noticed a difference from running it though!

VP has 2, they have C85 and X85. C85 is ethanol mixed with Q16 that is why if you look at the spec sheet for that fuel it will by higher Oxygenated than the X85 and also takes on yellow which is the color of Q16. You have to tune for C85 because even putting it in cars tuned for E85 it throws the tune off. Higher oxygenated means that oxygen now takes up "room" going thru your fuel injector, often referred to as shrinking the injector which will make the car run leaner.

I would just mix in regular E85 or VP X85, or any of the Ignite or Fuse fuels.

[FloridaM5]

My track had its first test n tune in a few weeks. We also had our first cool day of the season (mid 50s)....so...most packed I've ever seen it. Got one run in, over the course of 3 hours. Track prep at osw is always on point, always. Today, with the number of cars running, they were not able to re-prep as they normally do, after a number of cars run. Awful conditions, but I'll post up my slip anyways.

Running e30 blend of 93 and e85, with 4 gallons of 100 octane mixed in. JB4 map 7 on top of ecu flash.

Car spun, gripped, went limp (and called bmw since it thought it got into a wreck), and then I gassed it again. These cars are such monsters....can run a 10.7 with such an awful first half of the track. Lost about .5 seconds on the front half...I assume.

Will try again of course in the next few weeks.

[Bmwusabmw]

Originally Posted by prodigymb

VP has 2, they have C85 and X85. C85 is ethanol mixed with Q16 that is why if you look at the spec sheet for that fuel it will by higher Oxygenated than the X85 and also takes on yellow which is the color of Q16. You have to tune for C85 because even putting it in cars tuned for E85 it throws the tune off. Higher oxygenated means that oxygen now takes up "room" going thru your fuel injector, often referred to as shrinking the injector which will make the car run leaner.

I would just mix in regular E85 or VP X85, or any of the Ignite or Fuse fuels.

C85 is not cut with Q16 or any leaded VP fuel. The stoich on C85 is 9.2 vs E85 9.6-9.8... depending on the ECU or tune many people will run C85 without a change and let it correct the 5%, others prefer a dedicated tune.

But most importantly C85 also contains MTBE, which causes certain injector parts to swell up and reduce their flow. Some injectors can run MTBE fuels with no issues, others cannot. If your injector is not compatible MTBE will have a shrinking effect on it.

[Hockeytyme]

Originally Posted by FloridaM5

My track had its first test n tune in a few weeks. We also had our first cool day of the season (mid 50s)....so...most packed I've ever seen it. Got one run in, over the course of 3 hours. Track prep at osw is always on point, always. Today, with the number of cars running, they were not able to re-prep as they normally do, after a number of cars run. Awful conditions, but I'll post up my slip anyways.

Running e30 blend of 93 and e85, with 4 gallons of 100 octane mixed in. JB4 map 7 on top of ecu flash.

Car spun, gripped, went limp (and called bmw since it thought it got into a wreck), and then I gassed it again. These cars are such monsters....can run a 10.7 with such an awful first half of the track. Lost about .5 seconds on the front half...I assume.

Will try again of course in the next few weeks.

Ya, you lost some time in the 60' for sure. It's hard with only 1 run, thats for sure. At least you have a track! lol

[FloridaM5]

Originally Posted by Hockeytyme

Ya, you lost some time in the 60' for sure. It's hard with only 1 run, thats for sure. At least you have a track! lol

For sure...love having a track nearby. Fun to run, and watch the fast guys/gals do their thing!

The 60ft isn't too bad, but def not great (1.5x is doable at track). It's what happened after it....7.1 for the 1/8 mile is not good (or typical).

[limeypride]

Originally Posted by FloridaM5

For sure...love having a track nearby. Fun to run, and watch the fast guys/gals do their thing!

The 60ft isn't too bad, but def not great (1.5x is doable at track). It's what happened after it....7.1 for the 1/8 mile is not good (or typical).

Low 6s between 105 and 107 is what I'd expect in the 1/8th with your setup and especially so at the track. Even with poor prep and questionable track cleanliness, they're almost always better than a shite farm road. With that fuel setup and a JB4 on map 7, I'd expect you to be in the 10.2s or better.

Do you happen to know your 0-60mph (via a Dragy or the like)?

Taking a leap here but have you considered flashing back to stock and running the JB4 by itself?

[FloridaM5]

Originally Posted by limeypride

Low 6s between 105 and 107 is what I'd expect in the 1/8th with your setup and especially so at the track. Even with poor prep and questionable track cleanliness, they're almost always better than a shite farm road. With that fuel setup and a JB4 on map 7, I'd expect you to be in the 10.2s or better.

Do you happen to know your 0-60mph (via a Dragy or the like)?

Taking a leap here but have you considered flashing back to stock and running the JB4 by itself?

Mid 6 1/8 mile is doable and what I was expecting. The power is absolutely there, this was just a botched run. I disagree the track is better than the road for these cars....both have their merits. I've spent hours testing on both. This particular platform likes some wheelspin, or needs a flawless launch. The slightest bit of spin then significant traction (prepped track) does weird things to the car, via the computer. They like some wheelspin and then ease into grip, or grip all the way through.

Nah, I'm happy with the setup for now. I run map 2 as a daily, and use map 7 for high boost. Just posting all my results for the community, not just the glory runs. Car is running like a beast. Need more seat time at the track. Its def more difficult to get a clean run there...in my humble and amateur level experience.

[limeypride]

Originally Posted by FloridaM5

Mid 6 1/8 mile is doable and what I was expecting. The power is absolutely there, this was just a botched run. I disagree the track is better than the road for these cars....both have their merits. I've spent hours testing on both. This particular platform likes some wheelspin, or needs a flawless launch. The slightest bit of spin then significant traction (prepped track) does weird things to the car, via the computer. They like some wheelspin and then ease into grip, or grip all the way through.

Nah, I'm happy with the setup for now. I run map 2 as a daily, and use map 7 for high boost. Just posting all my results for the community, not just the glory runs. Car is running like a beast. Need more seat time at the track. Its def more difficult to get a clean run there...in my humble and amateur level experience.

My post may have come off as condescending or negative, my apologies--that wasn't my intention if it did.

I think you and I have discussed some of my experiences but here's a bit more detail to fuel the reasoning behind my comments/questions: I've used maps 1, 2 and 6 where 6 is my daily with customized boost per RPM settings. I add 6 oz of Boostane Pro to each ~20 gallon tank of 92 octane which yields ~96. With that setup, I run between 10.3s and 10.55s at mid 130s (sometimes on barely suitable albeit isolated roads). With race fuel (which I've not yet tried in this car), I'd crank map 6 to +6.5 and feel it out from there. I'd expect to gain another 0.05 or better getting into the 10.2s. It's this that made me wonder what your car would do with the JB alone.

Obviously, I'm implicitly citing the ECU tune as the primary delta but, of course, DA and other variables could also be skewing things.

[FloridaM5]

Originally Posted by limeypride

My post may have come off as condescending or negative, my apologies--that wasn't my intention if it did.

I think you and I have discussed some of my experiences but here's a bit more detail to fuel the reasoning behind my comments/questions: I've used maps 1, 2 and 6 where 6 is my daily with customized boost per RPM settings. I add 6 oz of Boostane Pro to each ~20 gallon tank of 92 octane which yields ~96. With that setup, I run between 10.3s and 10.55s at mid 130s (sometimes on barely suitable albeit isolated roads). With race fuel (which I've not yet tried in this car), I'd crank map 6 to +6.5 and feel it out from there. I'd expect to gain another 0.05 or better getting into the 10.2s. It's this that made me wonder what your car would do with the JB alone.

Obviously, I'm implicitly citing the ECU tune as the primary delta but, of course, DA and other variables could also be skewing things.

Not at all man. I appreciate your experiences as well. I dig it.

So many variables for sure. Ecu flash could very well be holding things back a tad too. Gonna do some track tuning, hopefully in Feb. We'll see.

Fueling absolutely makes a difference. I run every tank of gas now using 15 gallons of 93 octane and 5 gallons of e85. Car and logs show the car loves it. Ran some ms109 the other day, and the car hated it (could feel it pull power), but the pails of ms109 may have been bad. I used those pails two different times, and both times the car was sucking wind.

[gpdriver17]

Originally Posted by FloridaM5

Not at all man. I appreciate your experiences as well. I dig it.

So many variables for sure. Ecu flash could very well be holding things back a tad too. Gonna do some track tuning, hopefully in Feb. We'll see.

Fueling absolutely makes a difference. I run every tank of gas now using 15 gallons of 93 octane and 5 gallons of e85. Car and logs show the car loves it. Ran some ms109 the other day, and the car hated it (could feel it pull power), but the pails of ms109 may have been bad. I used those pails two different times, and both times the car was sucking wind.

Do you run any boostane with Map 7? Or just 93 mixed with e85?