A plume of smoke. How much is normal?

jdamore · 03-21-2016, 12:14 PM

I'm not talking about at a Cypress Hill concert..

Ever since Supercharging, every once and a while, a second gear pull will puff out a good cloud of black smoke.

It could happen when I'm on and off the throttle a lot (carving the turns) high in second gear then rip from 6k to 8.4k RPM. I don't think something is wrong but, I am trying to get an understanding why is it not consistent? Am I just getting an unlucky rich pull? Is my S65 just "clearing it's throat"?

Can you guys who are supercharged (and catless) describe what your exhaust does? What is normal?

Patrón · 03-21-2016, 12:20 PM

I couldn't tell you, i'm too busy trying to keep it straight....

it's just the tune, most cars especially with a tune or force induction will puff out a small cloud when you step on it. i wouldn't worry about it until it happens at idle.

jdamore · 03-21-2016, 12:39 PM

Quote:

Originally Posted by Patrón

I couldn't tell you, i'm too busy trying to keep it straight....

it's just the tune, most cars especially with a tune or force induction will puff out a small cloud when you step on it. i wouldn't worry about it until it happens at idle.

lol I here ya.

Its took a few times to actually get a good enough look at it. The last time, I had the sun at my back so I could tell it was black.

It doesn't happen daily but, this time, it was darker than I have ever noticed. Something like this (not quite as thick):

Patrón · 03-21-2016, 12:48 PM

Quote:

Originally Posted by jdamore

lol I here ya.

Its took a few times to actually get a good enough look at it. The last time, I had the sun at my back so I could tell it was black.

It doesn't happen daily but, this time, it was darker than I have ever noticed. Something like this (not quite as thick):

pretty normal, my n/a use to do it anytime i'd floor the gas.

squartus · 03-21-2016, 07:28 PM

Mine does when I hit 8k+

L4ces · 03-21-2016, 10:32 PM

My NA did it after downshifting and wot

jdamore · 03-22-2016, 07:15 AM

Thanks for the reassurance!

I never had any smoke when I was NA (that I noticed)

ASBSECU E93 · 03-22-2016, 07:45 AM

I think it is also an effect of removing primary cats for my particular set-up.

MoBounce · 03-22-2016, 09:47 AM

I'd say, white smoke is WAY worse. With a tune, and FI, the tune (to be safe) probably has it running a bit richer than normal. My guess, anyway.

03-21-2016, 12:14 PM	#1
jdamore Captain 433 Rep 855 Posts Drives: 2008 e92 M3 Join Date: May 2013 Location: New Jersey iTrader: (4)	A plume of smoke. How much is normal? I'm not talking about at a Cypress Hill concert.. Ever since Supercharging, every once and a while, a second gear pull will puff out a good cloud of black smoke. It could happen when I'm on and off the throttle a lot (carving the turns) high in second gear then rip from 6k to 8.4k RPM. I don't think something is wrong but, I am trying to get an understanding why is it not consistent? Am I just getting an unlucky rich pull? Is my S65 just "clearing it's throat"? Can you guys who are supercharged (and catless) describe what your exhaust does? What is normal? __________________ -- 08 JB e92 6MT ///M3 ESS VT2-625 --
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03-21-2016, 12:20 PM	#2
Patrón PAZUZU 545 Rep 2,058 Posts Drives: '15 M4 Join Date: Sep 2013 Location: San Antonio, TX iTrader: (1) Garage List 2015 BMW M4 [0.00] 2009 BMW M3 [10.00]	I couldn't tell you, i'm too busy trying to keep it straight.... it's just the tune, most cars especially with a tune or force induction will puff out a small cloud when you step on it. i wouldn't worry about it until it happens at idle. __________________ 2009 M3 DCT ESS625+ SOLD 2015 M4 BSM/Silverstone F4LCON @texasMclub IG @jagemoets
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03-21-2016, 07:28 PM	#5
squartus Major 314 Rep 1,017 Posts Drives: 2010 E92 M3 6MT Join Date: Apr 2013 Location: Mississippi iTrader: (0) Garage List 2010 E92 BMW M3 [10.00]	Mine does when I hit 8k+ __________________ 4.4L LC stroker/ESS VT2-625/Volk te37 sl's/AA exhaust/DSS Carbon Fiber driveshaft/ARH Headers.. etc
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03-21-2016, 10:32 PM	#6
L4ces Major 337 Rep 1,489 Posts Drives: 2008 E92 M3 Alpine White Join Date: Aug 2010 Location: NJ - NY iTrader: (0) Garage List 2008 M3 [0.00]	My NA did it after downshifting and wot
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03-22-2016, 07:15 AM	#7
jdamore Captain 433 Rep 855 Posts Drives: 2008 e92 M3 Join Date: May 2013 Location: New Jersey iTrader: (4)	Thanks for the reassurance! I never had any smoke when I was NA (that I noticed) __________________ -- 08 JB e92 6MT ///M3 ESS VT2-625 --
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03-22-2016, 09:47 AM	#9
MoBounce Mmmmmm3 13 Rep 81 Posts Drives: 2011 M3 e93 Join Date: Mar 2012 Location: Bayonne, NJ. iTrader: (0)	I'd say, white smoke is WAY worse. With a tune, and FI, the tune (to be safe) probably has it running a bit richer than normal. My guess, anyway. __________________ 2011 M3 E93 Jerez Black
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