|12-16-2018, 06:12 PM||#21|
//Binary is in my DNA
Join Date: Apr 2005
Location: Huntersville, NC
My Ride: 2002 325i
Digital Competition Systems
The older I get... The faster I was...
|04-14-2019, 02:53 PM||#22|
Join Date: Oct 2008
Location: Northern Michigan
My Ride: 330i ZHP
ok so I was wrong, that crankshaft sensor did not fix the issue.
After the car sat all winter in storage, I decided to also replace the headers. My ebay headers were 10 years old and had 100k miles on them, and I suspect I had a slight exhaust leak. Desperate, I replaced them with bimmerbrakes gen 3 headers, but that did not fix my misfire issue either.
So now the list of things I've tried looks like this:
This misfire problem only started after having the clutch and flywheel replaced. I've driven the car hard all summer and it wasn't an issue until that night on my way home from the shop after the clutch and flywheel install.
I feel like I've cleared every "real" source of a misfire (fuel is good, ignition is good, air is good), so I'm still thinking the problem has something to do with the detection of the misfire itself.
I mean, is it possible the new clutch and flywheel combo changed harmonics or something in just the right way that the DME thinks it detects a misfire?
I'm running a LUK OEM-style dual mass flywheel with a Sachs Performance clutch, and in case it matters I have an ATI super damper on the other end of the crank.
2003 BMW 330i ZHP
ESS Twin Screw Stage 2 - Wavetrac - Headers - Borla - BMW Performance
Turner Motorsports - Powerflex - StopTech
Build thread: https://forum.e46fanatics.com/showthread.php?t=696662
Wheelwell: 2003 BMW 3 Series
Fuelly: 2003 BMW 330i ZHP
Last edited by rkneeshaw; 04-14-2019 at 02:58 PM.
|04-15-2019, 08:57 AM||#23|
Join Date: Mar 2012
My Ride: E46 330 ESS Touring
Maybe it's time to replace both engine wiring harness and ms45 ecu itself?
E46 M54B30 MT Touring | ESS TwinScrew2++ 15psi 77mm pulley + SS Headers + S38 Flywheel&Clutch + MFactory LSD 3.07 + Koni Sport + Eibach Pro + ///M3-Look
imBMW.net = BMW + iBus + .NET MF + .NET PCL & UWP + Bluetooth + Arduino + STM32 + music + handsfree + DIY + DBus DS2 DME Logging + etc...
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