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Gopherboy6956 · 04-23-2015, 12:19 PM

Now, this is a story all about how, my life got flipped-turned upside down...

Kidding. But - Looking for some opinions on the situation I find myself in.

- Car is smoking out of the exhaust, seems to 'run' fine -

Vehicle Background -
I have a 2013 BRZ with 11k miles on it. 5k of them have been supercharged with Vortech.
Up until last week, I was running the Perrin stock tune for Vortech, ~235hp @ the wheels. Super rich, of course.

5 track days thus far, 2 Supercharged. 10 or to total AutoX. No previous issues.

I added a header this year, and got setup for a protune a few hours from my house (Minneapolis). Went down to tune and made 275hp by basically just leaning out the tune to a safe level, didn't push it at all with the tune.

While tuning, i had a smaller S/C pulley that we tried, but on 91 octane, i didn't make any more power with the small additional boost (9psi vs 11psi), so we reinstalled the stock Vortech pulley.

Got it done, drove car back home 4ish hours no problems.

Went driving the next day, filled up with gas, and shortly thereafter got a misfire at idle and low throttle. Did some logging, and even pulled a DTC for misfire in Cylinder 4. (P0304 Cycl 4 Misfire Detected)

So, spoke to my tuner, and he wanted to see some more logs of it. We went out two days later (had not driven the car since) and it fired up, no misfire. Drove around to warm up the car, still drove no misfire. So, we did some interstate on ramp Full Throttle Pulls, and logged those. No issues.

Then, we stopped to flash a new map from my tuner (removed 5% fuel on WOT, it was a bit rich) and as soon as I fired up the car i noticed smoke coming from the exhaust. It was very prominent, so I drove it about a half mile, pulled over, and reloaded the original pro tune. No change. Decided to drive it straight home, about 8 miles. Smoked the whole way, but less when i was cruising, more when accelerating from a stop.

Now, i can't say for sure if I think it's oil smoke or coolant smoke, i have no obvious signs for either. However, here are two videos i took. First one is right after we noticed smoke. 2nd in later in my garage idling.

Since, i've pulled the intake tube from the S/C to look at the Throttle body - no oil in there (was thinking maybe it was the S/C leaking oil). It was dry.

Looked at my Radium Catch cans - they were all normal.

So now i've started pulling plugs. (OH MY GOD). I have 1 out so far (Driverside, front - assuming that's #1) and it looks perfect:

So, I am going to attempt to pull #4 and see what it looks like. Then do a compression test as well.

Beyond that, i'm 100% out of ideas. The car has been flawless up to this point, so i'm just at a loss for what could be wrong at 11k.

Any ideas?

Thank You!

04-23-2015, 12:19 PM	#1
Gopherboy6956 Senior Member Join Date: Feb 2013 Drives: 13 BRZ Limited WRB Location: Fargo, ND Posts: 723 Thanks: 17 Thanked 296 Times in 195 Posts Mentioned: 12 Post(s) Tagged: 0 Thread(s)	Exhaust Smoke after New Tune - Supercharged - :( Now, this is a story all about how, my life got flipped-turned upside down... Kidding. But - Looking for some opinions on the situation I find myself in. - Car is smoking out of the exhaust, seems to 'run' fine - Vehicle Background - I have a 2013 BRZ with 11k miles on it. 5k of them have been supercharged with Vortech. Up until last week, I was running the Perrin stock tune for Vortech, ~235hp @ the wheels. Super rich, of course. 5 track days thus far, 2 Supercharged. 10 or to total AutoX. No previous issues. I added a header this year, and got setup for a protune a few hours from my house (Minneapolis). Went down to tune and made 275hp by basically just leaning out the tune to a safe level, didn't push it at all with the tune. While tuning, i had a smaller S/C pulley that we tried, but on 91 octane, i didn't make any more power with the small additional boost (9psi vs 11psi), so we reinstalled the stock Vortech pulley. Got it done, drove car back home 4ish hours no problems. Went driving the next day, filled up with gas, and shortly thereafter got a misfire at idle and low throttle. Did some logging, and even pulled a DTC for misfire in Cylinder 4. (P0304 Cycl 4 Misfire Detected) So, spoke to my tuner, and he wanted to see some more logs of it. We went out two days later (had not driven the car since) and it fired up, no misfire. Drove around to warm up the car, still drove no misfire. So, we did some interstate on ramp Full Throttle Pulls, and logged those. No issues. Then, we stopped to flash a new map from my tuner (removed 5% fuel on WOT, it was a bit rich) and as soon as I fired up the car i noticed smoke coming from the exhaust. It was very prominent, so I drove it about a half mile, pulled over, and reloaded the original pro tune. No change. Decided to drive it straight home, about 8 miles. Smoked the whole way, but less when i was cruising, more when accelerating from a stop. Now, i can't say for sure if I think it's oil smoke or coolant smoke, i have no obvious signs for either. However, here are two videos i took. First one is right after we noticed smoke. 2nd in later in my garage idling. Since, i've pulled the intake tube from the S/C to look at the Throttle body - no oil in there (was thinking maybe it was the S/C leaking oil). It was dry. Looked at my Radium Catch cans - they were all normal. So now i've started pulling plugs. (OH MY GOD). I have 1 out so far (Driverside, front - assuming that's #1) and it looks perfect: So, I am going to attempt to pull #4 and see what it looks like. Then do a compression test as well. Beyond that, i'm 100% out of ideas. The car has been flawless up to this point, so i'm just at a loss for what could be wrong at 11k. Any ideas? Thank You! __________________ I plan to live forever. So far, so good. My Build - http://www.ft86club.com/forums/showthread.php?t=31925 Last edited by Gopherboy6956; 05-18-2015 at 10:24 PM.