[nemobanks]

Originally Posted by D041987

That was the Sport + Maps but your DSC looks to be close to the same. Looking at all the maps seems like the initial start of your run around 2400RPM and going to almost 3200RPM the AFR goes up than settles down. This might be due to the interception of when the JB4 reads the the boost and alters it before sending it back to the ECU. So it is a small amount of RPM and that goes by quick but after the maps look to be good staying around the high 12's and dropping to high 11's for the AFR. But still the best looking and safer option is Map 1.

Can you post a log of the stock tune on your car with the JB4 Off to compare the numbers?

Alright , the weather is terrible . I'll Have to wait until it clears up.

[BMWtight2me]

So if no e85... How about a meth kit for the n20? It's freaking hot out here!

[Polo08816]

Originally Posted by nemobanks

Is it me or E85 mixtures aren't n20 EWG friendly. There was cars running e85 FBO and straight pipe Exhaust and jb4 , both eventually started misfiring and blow up within a or two month. ( both Motors were replaced under warranty) What's the ideal Mix ?

Originally Posted by xroshx

So you're saying JB4 tune on a F30 will turn the car to shit? Or am I totally off topic here hehe..

Originally Posted by D041987

In short, eventually running LEAN will blow your motor. IT is a ticking time bomb. But tune your car as you like my friend. As stated the product is good at what it does but needs to be coupled with a proper ECU tune for the motor to be safe.

The consequences of the tuning bro industrial complex...

[Diegov209]

Has anybody like ER or AA made a better radiator for the n20?

[D041987]

Originally Posted by Diegov209

Has anybody like ER or AA made a better radiator for the n20?

We have no issues with Radiators as they do just fine and do not crack and the fans we use push out high amounts of air. Our biggest issue if Front Mount Intercooler.

[Diegov209]

Originally Posted by D041987

We have no issues with Radiators as they do just fine and do not crack and the fans we use push out high amounts of air. Our biggest issue if Front Mount Intercooler.

Ohhhh okay then I should be fine lol since I have pwg

[Taskmaster]

Bob@BPC

[FSociety]

Originally Posted by D041987

In short, eventually running LEAN will blow your motor. IT is a ticking time bomb. But tune your car as you like my friend. As stated the product is good at what it does but needs to be coupled with a proper ECU tune for the motor to be safe.

Been saying this for a long time when I had an X3 28i from 2014-16, I saw a lot of friends who had major issues with JB4 (22psi) and I learned a few things that over 21psi N20 are not happy.
It's almost not worth it at all to bother tuning this engine. I moved on for that same reason.
Better off keeping it stock, and getting an N55.

Originally Posted by D041987

Honestly I have been following the tuners for a bit.

1. ACF Performance = Gone
2. BR Performance = Overseas
3. Mission Performance = Never heard of them with N20
4. GSR = No Idea
5. BootMod3 (This is a unlocking service for the ECU and comes with a stock Stage 1 map. Allows for remote session to load a tune to the ECU without having to send it in to the shop. This will be beneficial for someone that wants to build the car later and retune or if the tunner has free map updates. This is also nice as the tunner can remote in and fine tune your car if there are some issues as every off the shelf stage 1 map might not work right for a car, so fine tunning usually comes into play and this delivers.

Originally Posted by TheAxiom

Bob@BPC

Bootmod3 for logging/diagnostic/flashing to stock at your convenience,

+1 BPC seems to have good Delta

[Taskmaster]

John@BPC

[nemobanks]

bump

[nemobanks]

So heres an update of my lastest logs

FOL Changed From 60 To 70

Map 1 and 2
click the link and scroll down

http://www.n54tech.com/forums/showth...385#post565385

Same Mods
Engine : N20
HP/ TQ: ???
SHELL GAS : OCTANE 93
ER DOWN-PIPE
AFE CHARGE PIPE
INJEN INTAKE
WANGER EVO I Front Mount Intercooler
Straight pipe.

[nemobanks]

Originally Posted by D041987

That was the Sport + Maps but your DSC looks to be close to the same. Looking at all the maps seems like the initial start of your run around 2400RPM and going to almost 3200RPM the AFR goes up than settles down. This might be due to the interception of when the JB4 reads the the boost and alters it before sending it back to the ECU. So it is a small amount of RPM and that goes by quick but after the maps look to be good staying around the high 12's and dropping to high 11's for the AFR. But still the best looking and safer option is Map 1.

Can you post a log of the stock tune on your car with the JB4 Off to compare the numbers?

heres an update of logs I changed the fol from 60 70 . I have 0,1, and 2 maps.
http://www.n54tech.com/forums/showth...385#post565385

[Mike@N54Tuning.com]

Originally Posted by perry8912

I thought if you use a "normal" piggy back on you engine like a stage 1 tune, the factory ECU will adjust the afr automatically. Then the risk should be lower right?

The JB4 is unique in that it offers fuel pressure control, allowing it to correct fuel trims and AFR for E85 mixtures. Whatever failed on your friends cars, I doubt it was due to the E85. The N20 is known for having weaker rods from the factory and it tends to throw them over 22psi.

Mike

[nemobanks]

Originally Posted by Mike@N54Tuning.com

The JB4 is unique in that it offers fuel pressure control, allowing it to correct fuel trims and AFR for E85 mixtures. Whatever failed on your friends cars, I doubt it was due to the E85. The N20 is known for having weaker rods from the factory and it tends to throw them over 22psi.

Mike

When they took it in to bmw they said that e85 mixtures .

[odus]

Wow interesting read jb4 does a damn good job y’all complaining go drive a Cobb tuned Subaru and get back to me that is terrible. Seems like e85 is the problem here.

[M2_MEDUSA]

I know some guys running e85 meth FBO and upgraded turbos for over a year and not a single issue, it's probably how they may drive. Friends logs are solid and the n20 is super happy !!

[nemobanks]

Originally Posted by IssaF32

I know some guys running e85 meth FBO and upgraded turbos for over a year and not a single issue, it's probably how they may drive. Friends logs are solid and the n20 is super happy !!

upgraded fuel pump ?

[M2_MEDUSA]

Originally Posted by nemobanks

upgraded fuel pump ?

Yes only way to do it is upgraded fuel pump. I'm currently about to purchase lpfp stage 2 and run E30 do not go past E30 and your car will be happy actually if u run E20-E30 your car will most likely run better