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jaffrie jaffrie is offline
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Default Tuning Advice - 04-04-2021, 10:15 PM

Hi Gents,
Enclosing Csv for your kind advice. Car is an E89 28i which is FBOed.
Wondering if it can be fine tune for better performance am running on Map 1.

Many thanks
Attached Files
File Type: csv P70_M1_R1_210330_2244 Map 1.csv (17.1 KB, 18 views)
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Default 04-05-2021, 11:10 AM

Log looks pretty good. I'd see how a log looks on map 2 next.



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Default 04-05-2021, 06:46 PM

Hi Steve,

Thanks for the reply. Attached Map 2 for your advice. Notice that this firmware limits boost to around 20 psi, boost safety set to 22 psi. Question pls, if I undertstand the file correctly when boost starts to build till around 3700 rpm AFR is still at 14.5 or so. Is this not very lean & can this be richen ? I'm looking to see if the low end torque & response can be improved, would adding figures in 1st, 2nd & 3rd gear boost setting in user adjustment help ?
Lastly just to assure there's no boost leaks as I've tried the N20 ewg firmware to confirm. In Map 1 it went to 20 psi or so but this firmware does not function with bluetooth on my car.

Many thanks
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File Type: csv P70_M1_R2_210330_2244 Map 2.csv (36.6 KB, 16 views)
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Default 04-06-2021, 08:28 AM

Log looks fine....richer AFR's = less power and for spooling it's better to keep it leaner. JB4 does not determine the AFR targets, the flash does.



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Default 04-06-2021, 08:45 AM

Hi Steve,
Thanks for the advice. Is there anyway to improve low end torque & response ?
Also re boost pressure any idea why Map 1 & 2 is only 0.5 psi difference ?

Many thanks
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Default 04-07-2021, 11:08 AM

Are you running the EWG wires?

As for lag...you're not going WOT right away and turbo's take time to spool.




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Default 04-07-2021, 11:20 AM

Hi Steve,
No Ewg wires.

Thanks again
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Default 04-08-2021, 01:32 AM

Hi Steve,
Would running on Map 5 be beneficial ?

Thanks again
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Default 04-08-2021, 07:20 AM

Hi Steve
Would appreciate if you could verify settings are in order.

Thank you
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Default 04-08-2021, 09:53 AM

Best to run EWG wires.

The pictures need to be smaller, you can verify your settings here...

F Series N20 4-banger JB4 - N54Tech.com - International Turbo Racing Discussion

Only thing I see wrong is the meth trigger but that won't matter unless you are running meth.



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Default 04-08-2021, 10:07 AM

Many thanks again Steve,
Question how do I run with Ewg wires, my harness was not supplied with it ?
When I bought JB4 from Bms last Nov I did mention that it was for a E89 N20 EWG so when I got the stuff I presume that its the right stuff .

Last edited by jaffrie; 04-08-2021 at 10:28 AM..
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Default 04-08-2021, 10:23 AM

Hi Steve
Clarification pls, Im running the X1/Z4 firmware does the EWG cable applies too ?
What is the side effect if I don't install the cable.

Many thanks again
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Default 04-09-2021, 09:36 AM

Here's the link for the EWG wires...

https://burgertuning.com/products/n5...b2313b3c&_ss=r

If you don't run them, JB4 won't have control of the wastegate.



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