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Metanoia Metanoia is offline
New Member
Posts: 6
Join Date: Sep 2017
Car: 2008 BMW 335xi
Default New Logs to an old post :-) - 09-16-2019, 09:06 PM

Hello N54Tech team. Since last posting, I have installed the pump BEF, and the car has been running great on map 1 for over a year. However, recently, I have been experiencing some issues that I was hoping you could help me troubleshoot.

When I go WOT, the car pulls the tune and reverts to map 4. This has been occurring regardless of whether using 91 or 94 octane. The attached logs are using 91 octane. Recent modifications have been made to support Map 2 (upgraded FMIC, exhaust), however, I have not tried Map 2 due to the issues experienced.

My initial review of the logs:
1. AFR seems high at WOT (going as high as 16.6)
2. The car pulls timing quickly (down to 3deg at 2523 rpm)
3. Fuel pressure seems to be ok for both hp and lp.

The car has approximately 30,000 miles since the last time I have walnut-shell blasted the intake, however, does have recent spark plugs (OEM). I will be doing the blasting in the next weekend or two.

I appreciate any guidance you can offer. Thanks so much!
Attached Files
File Type: csv 2019-09-16 21_19_49_Map-1.csv (34.4 KB, 56 views)

2008 BMW 335xi | 6MT | 130,000 km | JB4 G5 ISO | Pump BEF | BMS DCI | ER Charge Pipe | Forge DVs + yellow springs | VRSF 5 HD FMIC

Maintenance: Walnut Blast, Plugs, Coils (78,000 km)
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