[BavarianBeastm3]

so im having a werid issue i thought id share with the fourms and see what people think. I have a manual m235i catlessdownpipe, bms intake , jb4 running 10 gallons 100 octane 3 gallons e85 when i do a solid pull in a gear like in 3rd i get good afr but when i shift and pull in the next gear my afr skyrocket i have ewg and flex fuel wires hooked up.

any suggestions would be appreciated

here is an example in my logs

2nd gear only


1st to 2nd to 3rd

[e46m3to335i]

Yeah, those AFR's are WAY too lean. I would contact Burger ASAP before you push the car any more.

-Nick

[harkes]

Strange that your ignition is staying so strong - worrying. Switch to map0 until Terry has had a look at this.

[Mike@N54Tuning.com]

For JB4 tuning help post the CSV logfile to N54tech in the support forum.

Mike

[boost82]

Same thing happens to me. It doesn't matter what map, even map 4 it happens. Happens with straight pump gas as well. I have been working with them but it's getting pretty old quick not being able to bang through gears and have fun. A single gear pull is fine but as soon as you shift your trims flatline and afr's skyrocket. Same thing I have, take a look at what happens to your trims in your logs...

I actually feel better seeing these I know it's definitely the tune

[BavarianBeastm3]

well in map 0 and map 4 it dosent do this to me i already emailed burger motorsport and waiting for a reply. i wouldnt mind going to there actuall shop if they would take a look at it for me. but i work 6 days a week lol im running map 0 until i figure this out. if anyone wants to see the actual files ill upload them let me know

[mike@x-ph.com]

As mentioned above contact Burger tuning technical support.

[ocN55]

Originally Posted by boost82

Same thing happens to me. It doesn't matter what map, even map 4 it happens. Happens with straight pump gas as well. I have been working with them but it's getting pretty old quick not being able to bang through gears and have fun. A single gear pull is fine but as soon as you shift your trims flatline and afr's skyrocket. Same thing I have, take a look at what happens to your trims in your logs...

I actually feel better seeing these I know it's definitely the tune

Darn even in map 5 you're running lean?

Is everyone on the latest ewg firmware?
Using the ewg wires, ewg board, ff wires? All these 3 things will allow for optimal performance on our cars.

[boost82]

Even map 4 lol. Only map it doesn't happen in is map 0. Oh yeah this has followed me through multiple firmware updates and now I am on the obd2 firmware. It's a dangerous thing, see how lean I run in some of these logs? Take a look...

http://www.n54tech.com/forums/showthread.php?t=30670

[B78YDH]

Btw how to make afr richer, in jb4 map 6 ?

[Anthony235]

Originally Posted by B78YDH

Btw how to make afr richer, in jb4 map 6 ?

Can't make it richer. You could make it leaner with a bad tune I suppose.

ECU controls AFR within it's own criteria.