[DriveBikeRun]

Thanks for sharing. PR coils are on my list to look at more closely when I get around to a turbo upgrade. Not so sure after watching the video...the fitment is pretty janky with the stock air box and engine cover.

[AJL]

Originally Posted by DriveBikeRun

Thanks for sharing. PR coils are on my list to look at more closely when I get around to a turbo upgrade. Not so sure after watching the video...the fitment is pretty janky with the stock air box and engine cover.

That's my video - and yes it most certainly is janky as frig. However Justin w/ Twisted Tuning shared some pictures on my thread @ SS of how he modified the brackets to improve fitment. I'll probably be trying that later this week to see how that goes. Will still probably end up needing an aftermarket intake though.

[DriveBikeRun]

Originally Posted by AJL

That's my video - and yes it most certainly is janky as frig. However Justin w/ Twisted Tuning shared some pictures on my thread @ SS of how he modified the brackets to improve fitment. I'll probably be trying that later this week to see how that goes. Will still probably end up needing an aftermarket intake though.

Thanks for making the video. Found your SS thread as well. Let us know if you're able to get it tidied up. Do you know the expected lifespan of the PR coils vs OEM on tuned cars? Could be a strong case for them if they clean up the fitment and there's a financial payback.

Have you been in the clear on voltage spikes since the PR coil install? I've been beating on mine for about 6 weeks with OEM coils and no codes have returned.

[orteeze]

Originally Posted by AJL

That's my video - and yes it most certainly is janky as frig. However Justin w/ Twisted Tuning shared some pictures on my thread @ SS of how he modified the brackets to improve fitment. I'll probably be trying that later this week to see how that goes. Will still probably end up needing an aftermarket intake though.

Your Google Fu is weak grasshopper

https://www.e90post.com/forums/showthread.php?t=1532881

Per Robert@PR, coils must be mounted with PR logo facing in on N55 brackets for added clearance.

[AJL]

Originally Posted by orteeze

Your Google Fu is weak grasshopper

https://www.e90post.com/forums/showthread.php?t=1532881

Per Robert@PR, coils must be mounted with PR logo facing in on N55 brackets for added clearance.

Well how in the world did I miss that? Now I know what I'm doing tomorrow. Thanks for sharing!

[orteeze]

Originally Posted by AJL

Well how in the world did I miss that? Now I know what I'm doing tomorrow. Thanks for sharing!

Still not meant to clear stock intake though, he did mention that.

[AJL]

Originally Posted by orteeze

Still not meant to clear stock intake though, he did mention that.

I never expected them to

[GoodMoodley]

Originally Posted by AJL

I never expected them to

So AJL. How has the car been running. Have you had a chance to push it? Have the overvoltage/BSD errors disappeared?

[AJL]

Originally Posted by GoodMoodley

So AJL. How has the car been running. Have you had a chance to push it? Have the overvoltage/BSD errors disappeared?

Indications look very good. I've been trying to cause an over-voltage / BSD error whenever I have the chance, and haven't had an issue yet. So that's a good sign.

Further *mhm* "testing" is required before I'm confident the problem is resolved. Most of my driving is to and from work every day, so I don't get a chance to really let 'er rip that often. I'm going for a drive through the country this weekend so I'll have a good chance to try again.

[liftrichh]

Originally Posted by DriveBikeRun

I also have a 2011 335i with BSD codes, but without the misfires. My BSD codes are accompanied by over voltage codes on many other sensors. I can see the voltage spike in freeze frame data, so I'm trying to troubleshoot that now. My codes are triggered under heavy load (basically WOT) and hot conditions. As those conditions worsen, it progresses from merely setting the codes to a full on limp mode. In either case, a quick shutdown and restart brings everything back to normal operation.

If that resonates with you, check out the thread below. Many of us with 2011 335's have similar issues. I'm continuing to chase it, but would love for someone to figure this out!

Voltage drop to 11.9v randomly https://www.e90post.com/forums/showthread.php?t=1428829

I'm have the same issue

[liftrichh]

Originally Posted by DriveBikeRun

GoodMoodley, glad we could help! Sure sounds like the same issue. It was happening very often for me, but hopefully with yours being less frequent your alternator might be spared. Definitely keep us posted if you decide to go the PR coils route...even though my problem is solved, I still may go with the PR setup in the future. And now, thanks to being introduced to Houtan and reading his whole PS2 install thread, I'll probably be doing that, too 😜

I have pr coils and currently facing the same problem

[Supermoon]

Originally Posted by liftrichh

I have pr coils and currently facing the same problem

Did you ever fix it? PR coils have been running fine for 6 months.
My car limps after misfires. BSD codes. Voltage below 12v until restarting engine.

[liftrichh]

Originally Posted by Supermoon

Did you ever fix it? PR coils have been running fine for 6 months.
My car limps after misfires. BSD codes. Voltage below 12v until restarting engine.

Not yet. How did you fix it

[Supermoon]

Originally Posted by liftrichh

Not yet. How did you fix it

It's still on-going.
From what I have gathered the causes have been:

1. Most people had fake/incorrect Delphi coils with poor grounding that did not hold up under WOT.

2. Alternator went bad. It could have happened because of faulty coils.
PR coils are no fake Delphi's but we never know. At least mines have been working fine for 6 months.

3. Intelligent Battery Sensor has gone bad.

4. Rusted connector/cable from alternator to ECU? Not sure but plausible.
Possible damage to voltage regulator inside ECU.

5. If all above are false something that's within BSD must have gone bad.

[liftrichh]

Text me at 8328006058