Normal to blow some flames?

chuckd05 · 12-24-2010, 02:13 AM

Is it normal for my car to shoot some flames out of the exhaust on a cold night here in NY?

Car was fully warmed up, on my way home from the movies I gassed my car from second to third and my buddy called me ( who has an evo 9 mr ) and said I just blew flames bigger than his car does out both exhausts...

I was able to do it again the next time I gassed the car and shifted towards reline..

it was about 35 degrees..

Normal?

phelan · 12-24-2010, 02:18 AM

....no?

djpathfinder · 12-24-2010, 02:44 AM

I've also seen someone else with test pipes and CBE to throw some flames too.

fullmonty · 12-24-2010, 09:22 AM

Ya dude, unless you have flame throwers, no its not normal. You sure your friend isn't B.Sing you?

Q8y_drifter · 12-24-2010, 09:53 AM

If your AFR is rich enough at redline then it's possible. The lack of cats is also a factor.

YouTube - Basic bolt on 07 350Z HR vs Stock 08 350Z HR

small flame with a stock tune HR Z.

spearfish25 · 12-24-2010, 10:14 AM

^those are his tail lights. I don't see any flames.

Q8y_drifter · 12-24-2010, 10:17 AM

Quote:

Originally Posted by spearfish25

^those are his tail lights. I don't see any flames.

LOL look at the exhaust when he shifts. There's a small blue backfire. I'm assuming that's what the OP was talking about?

JMac88 · 12-24-2010, 10:36 AM

I had that problem for a bit too. My car was running really rich when i put my test pipes till the ECU leaned itself out. Nothing to really worry about unless your AFRs are showing abnormally rich.

edit* just noticed your tunned. Your tunner may have programmed the ECU a little rich to have a "safer" tune depending on timing ect...

djpathfinder · 12-24-2010, 11:47 AM

Glad you chimed in JMac...I was referring to your car.

chuckd05 · 12-24-2010, 12:48 PM

Def was doing it and on multiple occasions.

I'm tuned. Been tuned for a while I will go in and do a dyne pull and have them clean up the afr. My girl met us there and she was behind too and she also saw it. When I got home she asked if my car was Going to blow up ? Lmao

I thought it seemed a bit strange. And the way the described them is that it wasnt just a small spark either ...

Interesting to say the least...

TBOX · 12-24-2010, 01:20 PM

tuned cars are tricky up here. The drastic weather changes can throw you from lean to rich in no time. My old WRX used to shoot enough flames that it left my bumber charred.

But anyhow, you're running rich enough that detonation of extra fuel is occuring in your exhaust.

chuckd05 · 12-24-2010, 11:38 PM

Good point tbox, thing Is my car was tuned last winter

chuckd05 · 12-30-2010, 04:27 PM

Went to my shop today ( UpRev Tuners ) Performance MotorSports in Smithtown, NY ... they datalogged it and fixed some correction factors but nothing seemed all that out of whack... i saw the datalogging charts and a/f looked good on accell and decell... I was at 12 ish at redline....

Come spring I will get back on the dyno for a little tweaking and we are going to make a track map with a more aggressive tune with a touch higher redline...

As always the guys at that shop were extremely helpful... I will experiement again though with someone video taping one of these nights to see if its still doing it but the car will not be driven all that much until spring so I am not worrying about it. Once they tweak the tune a bit Im sure all will be well...

RCZ · 12-30-2010, 04:51 PM

only if by normal you mean awesome.

nogoodname · 12-30-2010, 04:54 PM

oOoOoOo.... a little after fire!

12-24-2010, 02:13 AM	#1 (permalink)
chuckd05 A True Z Fanatic Join Date: Oct 2009 Location: NY Posts: 2,391 Drives: No longer a Z Rep Power: 20	Normal to blow some flames? Is it normal for my car to shoot some flames out of the exhaust on a cold night here in NY? Car was fully warmed up, on my way home from the movies I gassed my car from second to third and my buddy called me ( who has an evo 9 mr ) and said I just blew flames bigger than his car does out both exhausts... I was able to do it again the next time I gassed the car and shifted towards reline.. it was about 35 degrees.. Normal? __________________ 09 370Z 6M PW - FBO Best 1/4 mile = 12.926 @ 109 SOLD -- 08 BMW 135i - FBO 12.1@120mph SOLD -- white 09 e92 335 Coupe Mtech - 11.9 @ 119 :-)

12-24-2010, 02:18 AM	#2 (permalink)
phelan A True Z Fanatic Join Date: Apr 2009 Location: CA Age: 38 Posts: 9,513 Drives: Scoobaroo Rep Power: 3406	....no? __________________ 凛 ('Rin') - 2009 Nissan 370Z With silence comes peace. With peace comes freedom. With freedom comes silence.

12-24-2010, 02:44 AM	#3 (permalink)
djpathfinder A True Z Fanatic Join Date: Mar 2010 Location: Edmonton, Canada Posts: 12,910 Drives: 2012 GT-R BE Rep Power: 733	I've also seen someone else with test pipes and CBE to throw some flames too. __________________ 2012 GT-R Black Edition Jet Black 2010 370Z 40th Anniversary // SOLD

12-24-2010, 09:22 AM	#4 (permalink)
fullmonty A True Z Fanatic Join Date: Nov 2009 Location: Dirty Jersey Posts: 7,762 Drives: 370 Touring/Sport Rep Power: 34	Ya dude, unless you have flame throwers, no its not normal. You sure your friend isn't B.Sing you? __________________

12-24-2010, 09:53 AM	#5 (permalink)
Q8y_drifter Enthusiast Member Join Date: Mar 2010 Location: Kuwait Posts: 306 Drives: 08 Infiniti G35 5AT Rep Power: 15	If your AFR is rich enough at redline then it's possible. The lack of cats is also a factor. YouTube - Basic bolt on 07 350Z HR vs Stock 08 350Z HR small flame with a stock tune HR Z. __________________ 08 G35 5AT Sedan \| Stillen CBE \| Invidia HFC \| Injen CAI \| Uprev Tune \| Akebono BBK \| Tanabe Coilovers \| Hotchkis Sway Bars \| GTSpec FSB \| Black Headlights & Grille \| Volk GT-F Wheels \| Hankook V12 Evo Tires

12-24-2010, 10:14 AM	#6 (permalink)
spearfish25 A True Z Fanatic Join Date: Mar 2009 Location: Naples, FL Posts: 4,117 Drives: to work Rep Power: 1856	^those are his tail lights. I don't see any flames. __________________ 2013 Cadillac V-Wagon, RIP Z

12-24-2010, 10:36 AM	#8 (permalink)
JMac88 Enthusiast Member Join Date: Jun 2010 Location: Edmonton AB Posts: 416 Drives: 2010 PW 370z Rep Power: 15	I had that problem for a bit too. My car was running really rich when i put my test pipes till the ECU leaned itself out. Nothing to really worry about unless your AFRs are showing abnormally rich. edit* just noticed your tunned. Your tunner may have programmed the ECU a little rich to have a "safer" tune depending on timing ect... __________________ Full Mod List

12-24-2010, 11:47 AM	#9 (permalink)
djpathfinder A True Z Fanatic Join Date: Mar 2010 Location: Edmonton, Canada Posts: 12,910 Drives: 2012 GT-R BE Rep Power: 733	Glad you chimed in JMac...I was referring to your car. __________________ 2012 GT-R Black Edition Jet Black 2010 370Z 40th Anniversary // SOLD

12-24-2010, 12:48 PM	#10 (permalink)
chuckd05 A True Z Fanatic Join Date: Oct 2009 Location: NY Posts: 2,391 Drives: No longer a Z Rep Power: 20	Def was doing it and on multiple occasions. I'm tuned. Been tuned for a while I will go in and do a dyne pull and have them clean up the afr. My girl met us there and she was behind too and she also saw it. When I got home she asked if my car was Going to blow up ? Lmao I thought it seemed a bit strange. And the way the described them is that it wasnt just a small spark either ... Interesting to say the least... __________________ 09 370Z 6M PW - FBO Best 1/4 mile = 12.926 @ 109 SOLD -- 08 BMW 135i - FBO 12.1@120mph SOLD -- white 09 e92 335 Coupe Mtech - 11.9 @ 119 :-)

12-24-2010, 01:20 PM	#11 (permalink)
TBOX Enthusiast Member Join Date: May 2009 Location: Upstate New York Posts: 356 Drives: 09 370z MB M6 Rep Power: 16	tuned cars are tricky up here. The drastic weather changes can throw you from lean to rich in no time. My old WRX used to shoot enough flames that it left my bumber charred. But anyhow, you're running rich enough that detonation of extra fuel is occuring in your exhaust.

12-24-2010, 11:38 PM	#12 (permalink)
chuckd05 A True Z Fanatic Join Date: Oct 2009 Location: NY Posts: 2,391 Drives: No longer a Z Rep Power: 20	Good point tbox, thing Is my car was tuned last winter __________________ 09 370Z 6M PW - FBO Best 1/4 mile = 12.926 @ 109 SOLD -- 08 BMW 135i - FBO 12.1@120mph SOLD -- white 09 e92 335 Coupe Mtech - 11.9 @ 119 :-)

12-30-2010, 04:27 PM	#13 (permalink)
chuckd05 A True Z Fanatic Join Date: Oct 2009 Location: NY Posts: 2,391 Drives: No longer a Z Rep Power: 20	Went to my shop today ( UpRev Tuners ) Performance MotorSports in Smithtown, NY ... they datalogged it and fixed some correction factors but nothing seemed all that out of whack... i saw the datalogging charts and a/f looked good on accell and decell... I was at 12 ish at redline.... Come spring I will get back on the dyno for a little tweaking and we are going to make a track map with a more aggressive tune with a touch higher redline... As always the guys at that shop were extremely helpful... I will experiement again though with someone video taping one of these nights to see if its still doing it but the car will not be driven all that much until spring so I am not worrying about it. Once they tweak the tune a bit Im sure all will be well... __________________ 09 370Z 6M PW - FBO Best 1/4 mile = 12.926 @ 109 SOLD -- 08 BMW 135i - FBO 12.1@120mph SOLD -- white 09 e92 335 Coupe Mtech - 11.9 @ 119 :-) Last edited by chuckd05; 12-31-2010 at 12:47 AM.

12-30-2010, 04:51 PM	#14 (permalink)
RCZ A True Z Fanatic Join Date: Nov 2008 Location: Miami Posts: 6,403 Drives: '09 370Z Rep Power: 1119	only if by normal you mean awesome. King_Ch1cas likes this.

12-30-2010, 04:54 PM	#15 (permalink)
nogoodname Lifetime Premium Join Date: Nov 2008 Location: Montreal Posts: 22,357 Drives: E46 M3 Rep Power: 1765	oOoOoOo.... a little after fire!

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