[E_Batson99]

Ok so let me explain this. I went stage 1 bm3 back a month ago. It was night and day. My car turned into a monster (for what I'm used to) and I loved it.... while it only lasted for a few hours. Within that time, my Charge pipe failed. I then was forced to drive home very slowly. While driving i did notice that the cars idle was terrible (shut off on me once) and some other things. However, this is no surprise considering what had just happened. When I got back I noticed that the sensor that attaches to the cp was dangling still fastened to a piece of the original cp. I undid it and stored it my car. A week later I finally got a new cp and installed is (evolution raceworks I think). While it was fixed and everything I did notice the rough idle persisted (really just during the cold start). It would become violent and shaky for a few seconds and then settle. It has been roughly a month and the problem has persisted. This is the biggest note. Since the cp swap and the rough idling, the power has dramatically reduced alongside the responsiveness. I purchased the car two years ago as a 2013 335i CPO with 30k miles.... now it has 66k. I have no idea if the prior owner or dealership has changed the spark plugs (more of when they did). Can anyone help. I've read and I'm guessing it can be spark plugs or coils or injectors. Also a note is after about 5-10 seconds, the rough idle stops. The reason I'm irritated is mostly the power drop and lack of responsivness. Any ideas?

[AK415]

did you check for any boost leak?

[E_Batson99]

No I have not. Although, other than going through the process of making sure everything is tight, is there any other way to check for a leak?

[Korvo]

Shit man I have the exact same idle issue after a downpipe install. Subbed!

[AK415]

Originally Posted by E_Batson99

No I have not. Although, other than going through the process of making sure everything is tight, is there any other way to check for a leak?

Probably the whistle noise you may hear when you accelerate? Another method could be the old soapy water method, which you spray some soapy water around the suspected area and look for bubbling.

You may also want to try reinstalling the cp while making sure the o-rings sit properly, especially the one side that connects to the FMIC. Also make sure the silicon house and pipes are sitting flat, not slanted.

[E_Batson99]

Originally Posted by AK415

Probably the whistle noise you may hear when you accelerate? Another method could be the old soapy water method, which you spray some soapy water around the suspected area and look for bubbling.

You may also want to try reinstalling the cp while making sure the o-rings sit properly, especially the one side that connects to the FMIC. Also make sure the silicon house and pipes are sitting flat, not slanted.

Thanks for the suggestion! I plan on changing my spark plugs tomorrow so that seems like a good time to do all of that. Seems like my car and I have a date now

[ouengineer]

Originally Posted by AK415

did you check for any boost leak?

This makes the most sense. I can't imagine plugs, coils, or injectors just happened to fail at the same time the charge pipe did. Keep checking for another leak.

[upsidedownfunnel]

When you installed the charge pipe, did you install the o-rings for both the upper and lower openings? Have you also tried flashing back to stock to see if it improves?

[izaazk]

I have the same exact issue and have tried all the above

[Troy27]

I had 64k miles when I installed my stage 1 tune. 2 of my coil packs failed in the first 500 miles of having my tune installed. I didn't know they were failing at first...I did notice rough idoling and worse gas mileage. I didn't know they failed until I started getting misfires. They were the original coils that came with the car. I think the added stress on the engine from the tune amplifies any engine problems that were already there but just unnoticeable. If you're changing your spark plugs spend the extra money and change the coil packs also. BMW uses eldor coil packs now you can find the non BMW branded OEM coil packs online for $28-$35 a piece. I personally don't like the Delphi OEM ones I had. I don't think coil packs should fail that soon. Tune or no tune. I've had cars with 140k miles on the original coil packs. It's definitely worth the change at that mileage. Since I've changed mine I have no problem at all! Car runs super smooth with no hiccups!

[cfm56d7b]

Did you have a chance to scan for stored codes? It's typically the first step.

PS. Posting in the dedicated N55 forum will yield more responses.

[Zanity]

wow, this is why I'm hesitant to get a tune. Hearing stories like this, something else must have blown with the charge pipe. Luckily my DIY catless downpipe caused no issues, not even CEL. But hopefully everything turns out ok for you.

[AK415]

Originally Posted by Zanity

wow, this is why I'm hesitant to get a tune. Hearing stories like this, something else must have blown with the charge pipe. Luckily my DIY catless downpipe caused no issues, not even CEL. But hopefully everything turns out ok for you.

In my opinion turbocharged cars are meant to be tuned, especially the ultimate driving machine

It just sucks that BMW uses a relatively weak chargepipe on these cars. Just like any other manufacturer, there is always gonna be at least 1 flaw in the consumer's perspective.

BTW, didn't you get a CEL at one point? I remember reading your post the other day, maybe it hasn't come back yet

[pshovest]

Originally Posted by E_Batson99

......I noticed that the sensor that attaches to the cp was dangling still fastened to a piece of the original cp. I undid it and stored it my car..........

Which sensor?
Are you certain it's still functional?

[pkiledj]

Has anyone been running a bm3 stage 1 tune for a long time with no issues?

[yoon_209]

Originally Posted by upsidedownfunnel

When you installed the charge pipe, did you install the o-rings for both the upper and lower openings? Have you also tried flashing back to stock to see if it improves?

more than likely it was an improper install of the chargepipe and there is a boost leak. alot of people forget about the o rings.

he also could have possilbly messed up the TMAP sensor on the cp

alot of people experience rough idle due to a new intake as well. check your MAF sensor as well.

[yoon_209]

Originally Posted by Zanity

wow, this is why I'm hesitant to get a tune. Hearing stories like this, something else must have blown with the charge pipe. Luckily my DIY catless downpipe caused no issues, not even CEL. But hopefully everything turns out ok for you.

op didnt do his due dilligence and do all the preventative work before he slapped a flash tune and started flooring it.

it is very well known in this forum that CP blows up under stock. first thing he should have done was get a new CP and sparkplugs before tuning.

btw your dp will throw a code eventually. they all do

[floridaorange]

Originally Posted by pkiledj

Has anyone been running a bm3 stage 1 tune for a long time with no issues?

Originally Posted by pkiledj

Has anyone been running a bm3 stage 1 tune for a long time with no issues?

What's a long time

[Zanity]

Originally Posted by AK415

In my opinion turbocharged cars are meant to be tuned, especially the ultimate driving machine

It just sucks that BMW uses a relatively weak chargepipe on these cars. Just like any other manufacturer, there is always gonna be at least 1 flaw in the consumer's perspective.

BTW, didn't you get a CEL at one point? I remember reading your post the other day, maybe it hasn't come back yet

ya, I got the CEL once at initial catless install, reset it with bimmerlink in 20 seconds, never came back again. I'm a happy camper now and a living proof defoulers still works.

Originally Posted by yoon_209

op didnt do his due dilligence and do all the preventative work before he slapped a flash tune and started flooring it.

it is very well known in this forum that CP blows up under stock. first thing he should have done was get a new CP and sparkplugs before tuning.

btw your dp will throw a code eventually. they all do

Yes, the charge pipe is his own fault for sure. As for my CEL, I'm confident to say that it stayed off after i reset it once on initial catless install. It has not come back yet, I went on a long trip on the weekends with WOT and everything, it still has not come back, it's been weeks now. If I need to reset it once every few months, so be it, it only takes me 20 seconds to do so with BimmerLink anyway, very worth it IMO.

[BigJack75]

I recently installed a bead charge pipe. It was not easy like posts have said. Anyway it seemed to be installed correctly. Went for a drive and went into limo mode. I had a leak. After taking the car apart I notice the charge pipe mid coupler was barely on the pipe causing a leak. Fixed it and all is good.

[sea_m2c]

seems no one has mentioned this.

When your charge pipe blew, it probably obliterated your o-ring up top with it. Did you get a new o-ring and install it on both the top and bottom of your new charge pipe?

[pkiledj]

Originally Posted by floridaorange

What's a long time

I don't know, 30,000+ miles