Jb4 g5 question

ysjeon1698

Specialist
Dec 1, 2016
79
14
0
29
Texas
I have 335is n54 e93.
Car is fbo with (dci, cp tial bov, fmic, catless dp and jb4)

Ran map 5 and 2, and noticed map 2 is more constant with the boost. And ofc i felt more power... I was wondering if its safe to daily drive with map 2 or not. Please help!
 

ysjeon1698

Specialist
Dec 1, 2016
79
14
0
29
Texas
It's not always about running more boost consistent boost is where you wanna be.
I guess I will get that later in the future... hopefully I can win the raffle LOL.. also, im not planning to use e85 yet.

Do you know if Map 2 is safe for me to use or not? you see, boost on map 5 was very inconsistent and was keep dropping when I tried to race my friend.
 

ysjeon1698

Specialist
Dec 1, 2016
79
14
0
29
Texas
Okay, going to log in like 30 min, but I need to update my firmware first!.
In application file, i have JB4_1_0_0_307. is this the newest one?? 12/9/2016
 

ysjeon1698

Specialist
Dec 1, 2016
79
14
0
29
Texas
I logged... bad day because first log, i pressed too much and car dropped to 2nd gear.
Last pull, I did alright i think, but went to limp mode and found out misfire on cylinder 5 lol.... well...

data log on map 2... pretty shitty LOL tell me what yall think
 

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Lieutenant
Nov 14, 2016
655
261
0
North Wilkesboro
I logged... bad day because first log, i pressed too much and car dropped to 2nd gear.
Last pull, I did alright i think, but went to limp mode and found out misfire on cylinder 5 lol.... well...

data log on map 2... pretty shitty LOL tell me what yall think
HPFP looks okay

your LPFP is struggling to stay up around 4-5k rpm

Trims are sticking are sticking at 50 so I would watch that and its causing you to run kind of lean.

Also, try zeroing out the AFR Bais's and Duty Cycle Bias's and turn on Cylinder corrections.


Do you use just a JB4 or do you use any BEFs?
 

ysjeon1698

Specialist
Dec 1, 2016
79
14
0
29
Texas
HPFP looks okay

your LPFP is struggling to stay up around 4-5k rpm

Trims are sticking are sticking at 50 so I would watch that and its causing you to run kind of lean.

Also, try zeroing out the AFR Bais's and Duty Cycle Bias's and turn on Cylinder corrections.


Do you use just a JB4 or do you use any BEFs?


Thanks for the review, I also asked Terry, and he told me to zero out AFR and Duty Cycle Bias. Could you help me how and where to adjust that setting in JB4?

I did not understand the part where you talked about my trim is sticking, and LPFP. LPFP, isn't it because my car had misfire??
 

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Lieutenant
Nov 14, 2016
655
261
0
North Wilkesboro
Go into Settings -> User Adjustments
and you should have a bunch of spaces for those just put in 0 for those values.

In the first log your trims were hold 50 (max value) for a little bit.

LPFP dropping below 60 is something to watch. Doesn't show instant need of replacement until under 50.. thats when its truly "failing to support the fueling needs" (Low Pressure Fuel Pump)