JB4 M4 Track Day - 11.50@122mph and 11.6@126mph

[gxman]

Also try just running a 1/4 tank of just race gas. A full tank is ~100lbs.

[Mike@N54Tuning.com]

Originally Posted by xxx_mina

Why cant you use map 2 without downpipes??? where i live we have 93 octaine as the standard so i use map 2 as my daily driver. once i install my meth im going to be using map7. i dont know if the s55 is different but thats how i did things in my n54 days and never had a problem...

with your logic i cant use the racegas map with just racegas because that would also be too much for the downpipes, but i did that too. im going to get AR downpipes but as far as i can tell the stock downpipes are okay to use a bit more boost with...

Without a datalog I can't answer your question directly as it pertains to your car and your fuel but I am pasting the map guidelines.

Map 0: Disable JB4 / Full Pass Through Mode
Map 1: Stage1 map adding approximately 40whp and 40wtq across the power band on pump gas. Suitable for all stages and fuel mixtures.
Map 2: Slightly more aggressive version of map 1 intended for vehicles with exhaust modifications and 93+ octane fuel. Can also be used with E85 and racing fuel mixtures. Requires Stage2.
Map 3: Slightly less aggressive version of map 1 intended for vehicles running on lower grade fuels such as 91 octane. Requires Stage2.

Mike

[hellrotm]

Originally Posted by spaniard

JB4 is useless for M3/M4 F80. it is very limited. Wait for the coming Ecu remap.

Except for the fact the JB4 has all the record 1/4 mile passes.

[xxx_mina]

Originally Posted by gxman

11.5 125mph times are stout.. The 120 & 122mph traps are unexpected with the 11.5x times. The other 60' and 1/4mi times near identical, but ~126traps.

Can you get the DA?

Drag times calculated DA at like 1100 or something... i posted the time to dragtimes so give it a day or so to be uploaded...

Originally Posted by Revcrazy

How much whp/tq are you making?

No idea, figure racegas and extra boost adds 80hp+

Originally Posted by gxman

Also try just running a 1/4 tank of just race gas. A full tank is ~100lbs.

that was my mistake, i accidently filled up my gas tank the day or so before and i just wasnt able to use it all up. i used half then filled up the other half because i didnt want the 93 octain in the tank to dilude the 100oct. Normally i would plan it out and have enough gas to get to the track then put race gas only .

Originally Posted by Mike@N54Tuning.com

Without a datalog I can't answer your question directly as it pertains to your car and your fuel but I am pasting the map guidelines.

I have logs @ the track with map 3 - 93 octain only, i guess i'll look at them and see how the car is running.

[MGWally]

Great run! I ran 11.4 w/ JB4 on Map 1.

http://f80.bimmerpost.com/forums/sho....php?t=1055947

[xxx_mina]

Originally Posted by MGWally

Great run! I ran 11.4 w/ JB4 on Map 1.

http://f80.bimmerpost.com/forums/sho....php?t=1055947

How did you launch your car? i had no launch control because the car wasnt broken in yet... and i'm still learning the car and best way to run it....

what can you tell me? i just got launch control today and it doesnt seem like its gonna let me hook

Mina

[MGWally]

just be sure to warm up the tires before you use launch control.

[harry$]

Originally Posted by MGWally

just be sure to warm up the tires before you use launch control.

What tire pressure were you using for your stock tires?

[Prestige@ActiveAutowerke]

I approached you that day and asked what you had done to your car. Very consistent times

[TahoeM3]

Nice runs...stock tires?

[A1PericoM3]

Originally Posted by xxx_mina

Ok so i went to the track today....it was Super Street Car Drag event and i got a ton of passes...

My Car has KNN drop in filter, Jb4 Map, and i added 1/2 tank of race gas ... it was 50/50 93 oct/100 oct ...i accidently filled up the night before and i managed to use up 1/2 the tank and filled the other half(6.5 gallons) with 100 octain race gas....

Looks like i'm second on Drag times for Fseries M3/M4
http://www.dragtimes.com/BMW-M4-Timeslip-27178.html
http://www.dragtimes.com/BMW--M4-Drag-Racing.html



Without race gas i ran 11.7 on map 2 ... with race gas i ran 11.5 with top MPH of 126 on Map 6 & 7 .

Check out the Attatched Time Slips... road test tv should have videos of the runs uploaded later.... for now check out this video of me vs SRT8 charger Stock vs Stock (my best run stock was 12.01)

PS: i had no launch control since i havent done my first service so i was launching at about 1200 rpm with a little bit of a bog... i had DSC(traction control) completely off , Enginge: Sport Plus, Suspension: Comfort, Steering: Sport Plus, and Transmission was on S3.

My next mods are Drag Radial, Meth, and Downpipes

I ran a 11.670 @121 last night with the new BMS stage 1 tune on 93 oct

[AWM3ME2]

Originally Posted by w00tw00t

drag != track day..

Lmao I guess no one else caught this I was wondering the same.

How the Vette man still have it?

[Tiago@VRSF]

Your track != everyones track

Nice numbers man!

[w00tw00t]

Originally Posted by AWM3ME2

Lmao I guess no one else caught this I was wondering the same.

How the Vette man still have it?

hahaha - yeah .. I still have the Z.. trying to sell it

[gtrsam]

do you have to connect anything else for map7 from map2? also it says you can use race gas mix for map2 as well. does it make a huge diff with a race gas mixture?

[xxx_mina]

Originally Posted by gtrsam

do you have to connect anything else for map7 from map2? also it says you can use race gas mix for map2 as well. does it make a huge diff with a race gas mixture?

I reccomend you have all 3 stages of the jb4 connected for any map . Race gas always makes a difference. the beauty of our car is the car is constantly tuning itself. so just with racegas the car will advance timing and give you more power. my friend with a completely stock car was able to run 11.68 because the car auto tuned for cold weather .

Mina