[fattoadray]

Hello. I'm reaching out to the community to get a recommendation on some software that may help me diagnose a possible issue that is causing my 2011 335d to smoke a bit more than expected after some work. I've purchased a stageII+ tune and hardware from BPC, but I am not getting any support from them after purchase. This may be because I'm not talking to the right people there, but I want to be polite and civil.

Long story short, the car runs pretty damn good but I think it should be capable of more. The symptom is quite a bit of smoke under 60%+ throttle. No codes at the moment. BPC says I shouldn't have that much smoke and should look for a boost leak or a mis-routed vacuum line. I've inspected all of the charge air plumbing and have performed a smoke test on said plumbing with no leak detected. All of the junctions are bone dry too. I took a quick look at the vacuum routing and don't believe that I've made a mistake with the connections. I'd guess the car wouldn't run very well with a mismatched connection on the turbo control vacuum valves, and would probably throw a code or two.

Here are the modifications and work that I performed all at once at 67k miles. BPC stageII+ tune. Removed and completely cleaned the cylinder head. Deleted swirl flaps. Deleted EGR by installing block off (BPC) on both sides of cooler. Deleted DPF by installing BPC's downpipe. Gutted SCR. Replaced all vacuum lines with silicone (I don't know if this was a good idea or not - time will tell). Replaced both turbo EPDW pressure converters with new BMW as a -probably stupid- precautionary measure. Any seal or gasket that was encountered was replaced with new OEM. All vacuum actuators, UEVs, reservoir, and lines, were tested on the bench before going back into car.

Other work I performed at the same time; replaced failed (did not hold vacuum) passenger motor mount, replaced harmonic balancer (large crack).

Circling back to my main question. What do you guys recommend for software to monitor and log what's going on as far as boost, engine load, even requested PWM to EPDW, etc.? I have a K+CAN/K+DCAN adapter that I bought for fooling around with coding and INPA.

Or maybe nothing's wrong and it just needs to be de-fueled a bit? I just think a car this size with a theoretical 320+hp/550+tq would scoot a bit faster down the road without leaving a cloud...

Thanks for any help, it's appreciated.

Two videos for what it's worth. (The smoke stops because I let off the throttle)

[32valves]

What air filter do you have?
Mine smoked the same until I replaced the oem filter with a piper hi-flow filter and it help a lot...

[335dlci]

Vcg causes a boost leak.

[Nadir Point]

That looks perfectly normal. Either more air or less fuel is what you have to deal with if you don't like it.

[335dlci]

You are high attidulde right?

[Yozh]

How much throttle is applied In those videos. Seems to be running too rich. But then I don’t know BPC. Comparatively, too rich. Ask BPC if your tune has all the required DTCs turned on.

[robnitro]

Stage 2+ was told to me to be smokier then stage 2 by bpc when I was asking about their tunes.

Torque with custom pids is great for monitoring real time. A 20$ Bluetooth konnwei obd2 adapter and android phone/tablet for the software.

[fattoadray]

Originally Posted by Yozh

How much throttle is applied In those videos. Seems to be running too rich. But then I don’t know BPC. Comparatively, too rich. Ask BPC if your tune has all the required DTCs turned on.

Both of those videos are full throttle.

[335dlci]

Originally Posted by 335dlci

You are high attidulde right?

Bump.

[fattoadray]

Originally Posted by robnitro

Stage 2+ was told to me to be smokier then stage 2 by bpc when I was asking about their tunes.

Torque with custom pids is great for monitoring real time. A 20$ Bluetooth konnwei obd2 adapter and android phone/tablet for the software.

I’ll get torque and take a look, thanks. I also have a dyno session with A/F monitoring scheduled. BPC says stage II+ should only smoke a little under full load, so I’m still looking at an air issue.

[fattoadray]

Originally Posted by 335dlci

You are high attidulde right?

I’m at 5000’ which could be the culprit.

[335dlci]

Originally Posted by fattoadray

I’m at 5000’ which could be the culprit.

Buy an intake like atm. Us altitude people smoke more up her. I'm stock and I roll coal here in Denver.

[robnitro]

I know his altitude means less overall airflow due to less absolute pressure but what's the deal with tuners who don't go by afr limiters? Why do we even have a wideband afr still fitted if the tunes just ignore it and pump it with fuel?

[335dlci]

Originally Posted by robnitro

I know his altitude means less overall airflow due to less absolute pressure but what's the deal with tuners who don't go by afr limiters? Why do we even have a wideband afr still fitted if the tunes just ignore it and pump it with fuel?

Pumping mor fuel doesnt make efficient power without air.

[robnitro]

Originally Posted by 335dlci

Pumping mor fuel doesnt make efficient power without air.

Yeah, that's why I'm confused at these tuners who have dynos to do testing.

When I tuned my vw tdi, without o2 sensor, but using maf and testing to see which calculated afr to use at differing rpm, it became a tune that put out a haze that you could barely see. This is the ideal fueling because past that a lot of fuel is wasted for minimal hp gain.

What I'm saying is that with better sensors like o2, it shouldn't be difficult to account for the smoke! Heck there were tables to calibrate turbo boost based on altitude.

I don't get why they tune it to be so smoky.

[335dlci]

Originally Posted by robnitro

Yeah, that's why I'm confused at these tuners who have dynos to do testing.

When I tuned my vw tdi, without o2 sensor, but using maf and testing to see which calculated afr to use at differing rpm, it became a tune that put out a haze that you could barely see. This is the ideal fueling because past that a lot of fuel is wasted for minimal hp gain.

What I'm saying is that with better sensors like o2, it shouldn't be difficult to account for the smoke! Heck there were tables to calibrate turbo boost based on altitude.

I don't get why they tune it to be so smoky.

I have been rolling coal here in Denver more than at sea level.. stock.....so
..

[Chief Orman]

Originally Posted by 32valves

What air filter do you have?
Mine smoked the same until I replaced the oem filter with a piper hi-flow filter and it help a lot...

ATM intake will help a lot...buy Propel diesel if available in your area.

[robnitro]

Originally Posted by 335dlci

I have been rolling coal here in Denver more than at sea level.. stock.....so
..

So they just are pumping fuel at a set limit instead of using the many ways to adjust for altitude/density.

Which tune do you have?

[335dlci]

Originally Posted by Chief Orman

ATM intake will help a lot...buy Propel diesel if available in your area.

Propel is only in cali.

[335dlci]

Originally Posted by robnitro

So they just are pumping fuel at a set limit instead of using the many ways to adjust for altitude/density.

Which tune do you have?

Stock.

[Duckinator]

How new is your air filter? Stock air boxes are known to be a restriction at higher rpms on modded cars. You can either cheese-grate mod it, or buy an ATM intake, that "should" lessen your smoke output. Least you're getting enough fuel!

[Lambobimmer]

I have a BPC 2+ and it smokes about the same as yours. I did have an issue with their tune not allowing the ECU to throw codes and I had to send my ECU back about two months ago to correct this issue. My car has smoked a little more ever since they reflashed my ECU and I believe that they flashed me with their 2+ hot tune, which i believe adds a tad more boost. Prior to this reflash, I smoked much less.

Buy this intake filter. Connects directly to the MAF and flows as well if not better than ATM. I have owned both.

https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1