BMW M52 Hunting like crazy

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Snake____1
MS/Extra Newbie
Posts: 17
Joined: Thu Sep 10, 2015 2:14 pm
Location: West\South Norway

BMW M52 Hunting like crazy

Post by Snake____1 »

Hello,

I am having some trouble with tuning in an M52 engine. It's hunting really bad, even though I set everything at one specific value.

Keep in mind this is in fact my first full sequential build :)

850cc injectors à là chineesium, Turbo, stock internals, stock everyting else...
Attachments
M52TUB28.msl
Log file
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M52TUB28.msq
Tune
(274.67 KiB) Downloaded 49 times
Matt Cramer
Super MS/Extra'er
Posts: 17499
Joined: Thu Apr 16, 2009 8:08 pm

Re: BMW M52 Hunting like crazy

Post by Matt Cramer »

Either the wideband isn't working, or you're running pig rich.

Normally an M52 would have a three wide IAC valve - has this been swapped for some other part?
Matt Cramer -1966 Dodge Dart slant six running on MS3X
Snake____1
MS/Extra Newbie
Posts: 17
Joined: Thu Sep 10, 2015 2:14 pm
Location: West\South Norway

Re: BMW M52 Hunting like crazy

Post by Snake____1 »

Running a seperate innovative mtx afr gauge.

The idle valve is swapped to a 2 lead spring returned style. Sorry, i forgot to add.
Matt Cramer
Super MS/Extra'er
Posts: 17499
Joined: Thu Apr 16, 2009 8:08 pm

Re: BMW M52 Hunting like crazy

Post by Matt Cramer »

Wiring the MTX-L to the ECU will give you a lot more tuning data.
Matt Cramer -1966 Dodge Dart slant six running on MS3X
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