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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Fri, May-31-2019, 04:53:20 AM   #51
04yfz
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Default Re: At my wits end, misfire issue, OBDII monitors incomplete...

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Originally Posted by alwaysbored786 View Post
Got ahold of TTFS, will be going there Tuesday after work.

He said these ECU's are dropping like flies, to test it, he'll flash my car back to stock, and if the intermittent issue doesnt come back, its tune tune (and i assume he will fix it), if it does, then my ECU is goofed.

Guess we'll find out.
You have misfires and coils with 128k miles..change the coil packs they're not expensive and even if they don't fix your issues I'm sure they're well past their prime.
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Old Sun, Jun-09-2019, 09:31:17 PM   #52
CSLM3Wannabi
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Default Re: At my wits end, misfire issue, OBDII monitors incomplete...

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Originally Posted by 04yfz View Post
You have misfires and coils with 128k miles..change the coil packs they're not expensive and even if they don't fix your issues I'm sure they're well past their prime.


There is nothing wrong with his coils. However, if you are willing to buy him some fresh ones I doubt he would turn down the offer.
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Old Sun, Jun-09-2019, 09:36:15 PM   #53
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Default Re: At my wits end, misfire issue, OBDII monitors incomplete...

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Originally Posted by nextelbuddy1 View Post
i'm assuming after reading through all the pages that you dont have a laptop with flashing capabilities and a proper cable?

since your car is a 2006, the next thing I would be doing is making a full backup of your DME and Tune file and then after that flashing the OEM modified CSL software to your HP DME since your car is a 2006 and seeing if you have similar issues or if it gets better.

if you have all 4 o2 sensors plugged in and in the proper locations, you shouldn't have to have them suppressed or coded out anyways.

unless you are still running a MAF sensor and that's why you went with the TTFS tune?


I thought you read all the pages? Maybe you missed where I swapped in a DME with that same modified OEM software and he had no issues.

We are just waiting to find out if itís the actual DME.
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Discussing At my wits end, misfire issue, OBDII monitors incomplete... in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)