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Go Back   E46Fanatics > Tuning & Tech > Driveline, Engine & DME Tuning

Driveline, Engine & DME Tuning
Talk about driveline improvements, NA tuning and DME tuning your E46 BMW here. This includes diffs, intakes, exhausts, chips, software and OBD tuning.

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Old 05-21-2015, 01:49 PM   #1
Typeone08
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Join Date: Jul 2014
Location: Fresno,CA
Posts: 36
My Ride: 01 325i sedan
Need help with rough idle

Put gas yesterday before going home at a local Valero with 91 octane and this morning it started to run rough not a lot of power almost shuts off haven't had this issue before usually I put Shell 91 octane but that was the closet gas station cause I was running low. Any ideas on what it could be it sounds like something is stuck in the exhaust and causing it to have no back pressure.
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Old 05-27-2015, 01:58 PM   #2
Typeone08
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Join Date: Jul 2014
Location: Fresno,CA
Posts: 36
My Ride: 01 325i sedan
So I checked the codes and the codes that popped out where P1512 and P0270. I've read what these codes mean and I was wondering if anybody else has had this problem before. The DISA vale low input does that mean that my DISA is bad and needs to be replace and is there any way to check that out? And the other is the number 4 injector clogged or bad. Is there anyway to manually clean these or does it need a special machine to do it? I'll do the work myself just need to know exactly what to buy. Thanks.
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