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2Addicts | BMW 2-Series forum Technical Topics N55 (M235i) Engine, Transmission, Exhaust, Tuning Boost Issue? AFR Issue?

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      03-01-2019, 04:34 PM   #1
Bimmer__Bro
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Drives: m235xi
Join Date: Jul 2018
Location: Philadelphia

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Boost Issue? AFR Issue?

Hey guys. I just took a datalog after adding the equivalent of e15 to check if everything was going well in my engine. I did a small 1st and 2nd gear pull and after looking at the numbers got a bit worried.

Specifically looking at the target vs boost numbers. In every timestamp, I had lower boost than target. Is this normal? Also, my AFR seems to get a bit high during some times. I just wanted to see if anyone knew if this was normal or if I should get this checked out. Thanks

Mods: BMS intake, ER charge pipe, ER downpipe, JB4 map 2 with MHD backend flash.
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File Type: pdf 2019-03-01 16_34_47 Map-2.pdf (65.4 KB, 138 views)
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