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+--- Thread: 2010 BMW 135i (/showthread.php?tid=10657)
Re: 2010 BMW 135i - RawrImAMonster - 05-12-2014
rherold9 Wrote:Check to make sure all your hoses where you changed your BOV are all good. That BMW technology is an alien compared to anything I've worked on or I would be more help. I mean these issues didn't happen until you put your mods on the car? I'd say mod related issue but no idea
They were there, just not as pronounced. Mods, especially turning up the boost, tend to exacerbate any existing issues.
I had attributed the slightly rough idle to the intake valves at that point, but now that it has gotten worse, I would say fueling or ignition.
My guess in order of most likely to least likely would be one of these
Coil(s)
Injector(s)
Fuel Pump
Dirty intake valves
Re: 2010 BMW 135i - nismosam - 05-15-2014
I vote coils just because that would be the 5th(I believe?) newer BMW getting a rough idle and misfires from coil issues. As a matter of fact not long ago Anthony Avino(new member) had the exact same issue with his car. We changed the plugs and replaced a coil(maybe 2? IDR) and the problem went completely away.
Re: 2010 BMW 135i - RawrImAMonster - 05-21-2014
Still haven't gotten the misfire figured out. It's still not bad enough to throw a code so I don't know what I'm working with yet. It hasn't changed at all in the last few weeks. Rough idle/misfiring on cold starts only at idle. Clears up once it's hot. The fuel injector cleaner doesn't seem to be doing anything now. Hopefully it will throw a code soon and hopefully it will only be a coil.
Unrelated, but I think I would benefit from getting at least an axleback exhaust at some point just for the sound. The engine is so smooth and quiet on this car that I've often found myself going 10mph faster than I mean too just because I can't tell what RPM it's at by the sound/vibrations. I'm eventually going to get a ticket if I keep it up. At least, that is my excuse for wanting to get an exhaust. :twisted:
Also unrelated, but I learned an interesting fact about this car. So far, no one has broken one of these motors from too much horse powers yet. I think the highest powered n54 is setting around 750whp and so far the (completely stock internals) motor hasn't let go yet. It will be interesting to see how far these things can be pushed before things start breaking. They may have a little more in common with the mkiv supras than I originally thought.
Re: 2010 BMW 135i - SlimKlim - 05-21-2014
When it's cold unplug the coils one by one, if you unplug one and the idle doesn't change, that's the bad one.
RawrImAMonster Wrote:Also unrelated, but I learned an interesting fact about this car. So far, no one has broken one of these motors from too much horse powers yet. I think the highest powered n54 is setting around 750whp and so far the (completely stock internals) motor hasn't let go yet. It will be interesting to see how far these things can be pushed before things start breaking. They may have a little more in common with the mkiv supras than I originally thought.
Sounds like a challenge.
Re: 2010 BMW 135i - Evan - 05-21-2014
I thought I read those engines overheat the oil even at stock hp?
Re: 2010 BMW 135i - RawrImAMonster - 05-21-2014
Evan Wrote:I thought I read those engines overheat the oil even at stock hp?
On the track some years have problems worse than others. 2010 has the biggest oil cooler of any year though. Either way, an upgraded oil cooler takes care of the problem.
Re: 2010 BMW 135i - D_Eclipse9916 - 05-21-2014
RawrImAMonster Wrote:Either way, an upgraded oil cooler takes care of the problem.
And then everything else breaks. I swear I have never instructed a car that broke so many things on track than a 135i with 2k miles on it. I think my DSM was more reliable on track...maybe. :lol:
Re: 2010 BMW 135i - RawrImAMonster - 05-21-2014
D_Eclipse9916 Wrote:RawrImAMonster Wrote:Either way, an upgraded oil cooler takes care of the problem.
And then everything else breaks. I swear I have never instructed a car that broke so many things on track than a 135i with 2k miles on it. I think my DSM was more reliable on track...maybe. :lol:
I definitely wouldn't seriously track either of them, or any turbo'd car for that matter.
Re: 2010 BMW 135i - RawrImAMonster - 06-04-2014
I'm going to be doing the BMW performance exhaust mod tonight. The stock exhaust on the 135i's doesn't really cause any restrictions except the downpipes. So anything you modify past that is just for sound.
Having said that, BMW charges about $1000 for their performance exhaust. On the PE, the muffler is the same size and shape as the OEM one, so someone got the idea of looking inside one of these mufflers. Turns out, its the same thing as the OEM one minus the vacuum controlled exhaust valve and one pipe is solid instead of having holes in it to let the sound get muffled like the OEM one.
So, to save yourself a thousand bucks, you can cut open the OEM muffler and either weld those holes shut or just wrap it with a few layers of header wrap. All you need to do after that is weld the muffler case back together.
Actually, this is better than the BMW Performance Exhaust because you still retain the functionality of the factory exhaust valve if you want. While the exhaust valve being open or shut doesn't make a huge difference on the factory exhaust, it will on this because the pipe that is opening and closing is the one that is getting modified.
This means I can have a perfectly silent exhaust for long highway trips if I want and still have some exhaust sound otherwise.. Thanks to the tune I have I can open and close that exhaust valve at will using the steering wheel controls. :thumbup:
Hopefully this will hold me off on wanting to actually spend 500+ on an aftermarket exhaust system.
Re: 2010 BMW 135i - davej - 06-04-2014
RawrImAMonster Wrote:This means I can have a perfectly silent exhaust for long highway trips if I want and still have some exhaust sound otherwise.. Thanks to the tune I have I can open and close that exhaust valve at will using the steering wheel controls. :thumbup:
that's pretty cool, stop by jmu sometime when you're done so i can hear the difference when you flip back and forth.
Re: 2010 BMW 135i - Jake - 06-04-2014
I want that for the 128... I know I have the little flapper valve. Wonder if my "PE" would be the same as yours inside.
Re: 2010 BMW 135i - RawrImAMonster - 06-04-2014
Jake Wrote:I want that for the 128... I know I have the little flapper valve. Wonder if my "PE" would be the same as yours inside.
If not I think I've heard of people switching to the 135i axleback on the 128i's. I can give you contact info for a guy that will sell his for 150 in Nova.
I'm worried it won't turn out quite as loud as I want with just modifying the muffler. I may end up switching to the n55 catless mid pipes as well.
Re: 2010 BMW 135i - Jake - 06-04-2014
RawrImAMonster Wrote:135i axleback on the 128i's. I can give you contact info for a guy that will sell his for 150 in Nova.
PM please!
Re: 2010 BMW 135i - RawrImAMonster - 06-06-2014
Got my muffler back on yesterday. It made some difference in loudness, but like I was expecting not as much as I wanted. It did change the tone a good bit especially above 3500 rpms or so. It's much more aggressive sounding now and has a bit more of that high pitched inline 6 tone I like. I think adding downpipes to this setup would make it sound awesome while still being civilized if needed. I'm still not decided if I want to do that yet or not. It's only 350 and the install isn't that big of a pain, but still I don't really need any more power with no LSD and skinny tires.
For the cost, it's not bad, but I would definitely wrap both of those pipes rather than just one if you aren't planning on doing any other exhaust mods.
Unrelated, but the misfire is slowly getting worse. Hopefully it will throw a code soon.
Edit: Oh and this thing sounds awesome without the muffler on. It's not even as loud as the Trans Am was so I can see why people run muffler delete setups a lot. It drones a good bit so it wouldn't be ideal for daily driving, but it sounds really good.
Re: 2010 BMW 135i - RawrImAMonster - 06-27-2014
I might upgrade my angel eyes again. A company came out with a new led bulb that doesn't have the bulky box that needs to be put in the housing like a lot of LEDs. That box can cause problems with the adaptive headlights.
The new ones look like they match the headlights perfectly. <!-- m --><a class="postlink" href="http://www.1addicts.com/forums/showthread.php?t=1001740">http://www.1addicts.com/forums/showthread.php?t=1001740</a><!-- m -->
Jake do you want my old bulbs if I make the switch?
Re: 2010 BMW 135i - Jake - 06-27-2014
RawrImAMonster Wrote:I might upgrade my angel eyes again. A company came out with a new led bulb that doesn't have the bulky box that needs to be put in the housing like a lot of LEDs. That box can cause problems with the adaptive headlights.
The new ones look like they match the headlights perfectly. <!-- m --><a class="postlink" href="http://www.1addicts.com/forums/showthread.php?t=1001740">http://www.1addicts.com/forums/showthread.php?t=1001740</a><!-- m -->
Jake do you want my old bulbs if I make the switch?
Sure, but I do have the adaptive (swiveling) headlights. Will that be a problem for me to use the ones you have?
Re: 2010 BMW 135i - RawrImAMonster - 06-30-2014
No, I have the adaptive headlights too. The ones I have now are just normal halogen bulbs that are whiter than stock. The problems occur with the older LED setups where you have a box that has to go inside the headlight housing cover. This can block the movement of the headlights and mess them up.
Just make sure to get the headlight covers back on properly when you do it. It can be a pain and if water leaks in, it will ruin the headlights (very very expensive).
Re: 2010 BMW 135i - Jake - 06-30-2014
RawrImAMonster Wrote:No, I have the adaptive headlights too. The ones I have now are just normal halogen bulbs that are whiter than stock. The problems occur with the older LED setups where you have a box that has to go inside the headlight housing cover. This can block the movement of the headlights and mess them up.
Just make sure to get the headlight covers back on properly when you do it. It can be a pain and if water leaks in, it will ruin the headlights (very very expensive).
OK, mail 'em to me and tell me what I owe ya.
Re: 2010 BMW 135i - RawrImAMonster - 06-30-2014
Actually the vendor was bullshitting in that thread. These do have the boxes like the other ones so it doesn't look like I'm going to be changing them after all. Don't want to risk messing up the AHL. Not trying to spend 1300 per headlight when something goes wrong.
Re: 2010 BMW 135i - RawrImAMonster - 07-15-2014
After starting my car for the first time after getting back from vacation I got a momentary poof of black smoke. From what I've seen, this tends to suggest a leaky injector, which is likely the cause of my misfiring issues on cold starts as well.
I was hoping that my issue wasn't an injector because one thing that is a pain about direct injected motors like this one is that you need to code the injector in the car's computer. This requires a 100 dollar cable and BMW software that you can find online. Also, depending on which injectors I have in my car currently, I might have to replace a whole bank (3 injectors) because you can't mix and match certain injectors on the same bank.
So at best, this will cost me around ~200 bucks to fix myself. Injectors are about 100 bucks a piece so if I need more the cost will go up quickly.
Also, it still hasn't thrown a code so I'm not sure which one it is yet. It is getting (very) slowly worse, so hopefully it will one of these days.