Why does the exhaust growl more aggressively for the first few minutes after starting

Bottomsup · 12-15-2013, 01:06 PM

I like it just curious though

waaaasabi · 12-15-2013, 01:26 PM

Quote:

Originally Posted by Bottomsup

I like it just curious though

The car warms up, so the engine idles at a higher RPM.

Z-Girl 12 · 12-15-2013, 03:19 PM

i loooovvveeee that sound...FI made it even more enjoyable. sounds sooooo rumbly and agressive!

BGTV8 · 12-15-2013, 03:23 PM

Combination of slightly higher rev's and over-rich mixture whilst the engine warms-up and the catalytic converters "flashing-up" - cats don;t work until they get to ~6-800DegC and that takes a couple of minutes

nmjaxx9 · 12-15-2013, 04:02 PM

My boi got a single exit gotttttt dammm when he starts whooooooo. He had a tune before and it was whippin faces. He told me after he got more hp he rearranged a old mans face the other day

OldFart · 12-15-2013, 04:23 PM

Mine sounds like a massive exhaust leak and loud when started. I thought it might be the flex piping in the exhaust. As the exhaust gets heated up the flex piping expands sealing itself up.

Tazicon · 12-15-2013, 04:36 PM

My G did it, my Z did it and my Porsche does it..........it's nothing out of the normal

osirus · 12-15-2013, 11:21 PM

Quote:

Originally Posted by nmjaxx9

My boi got a single exit gotttttt dammm when he starts whooooooo. He had a tune before and it was whippin faces. He told me after he got more hp he rearranged a old mans face the other day

Wait...What?!?!?

SS_Firehawk · 12-15-2013, 11:42 PM

I love cold starts. On the other hand, I can't sneak out of the house. Even if I some how managed to push it around the corner, she can hear my car from a mile away, as in a literal mile from my house.

Elan · 12-16-2013, 05:24 AM

Quote:

Originally Posted by nmjaxx9

My boi got a single exit gotttttt dammm when he starts whooooooo. He had a tune before and it was whippin faces. He told me after he got more hp he rearranged a old mans face the other day

Let me translate:

"My good friend had a single tip exhaust system installed. Gosh darn when he engages the ignition, it makes me go wow. He had the engine tuned up and it was faster than other peoples cars. He told me that after the tune allowed his car to produce more horsepower, he was able to claim victory in a race with an elderly gentleman the previous day".

Either that or after the tune, he mauled an old man.

RonRizz · 12-16-2013, 07:25 AM

Thanks, Elan... Makes sense now. Thats certainly one Boi who doesn't know the meaning of "Respect your elders", I mean, you can't just go around whipping faces, let alone rearranging them.

onzedge · 12-16-2013, 09:56 AM

Quote:

Originally Posted by nmjaxx9

My boi got a single exit gotttttt dammm when he starts whooooooo. He had a tune before and it was whippin faces. He told me after he got more hp he rearranged a old mans face the other day

That makes perfect sense.

Chuck33079 · 12-16-2013, 10:12 AM

Quote:

Originally Posted by onzedge

That makes perfect sense.

At least he's consistant.

onzedge · 12-16-2013, 10:12 AM

Quote:

Originally Posted by Chuck33079

At least he's consistant.

Chuck33079 · 12-16-2013, 10:16 AM

So what mod do I need to "whip faces"?

This is why they tell expectant mothers not to drink.

12-15-2013, 01:06 PM	#1 (permalink)
Bottomsup Base Member Join Date: Sep 2013 Location: SoCal Posts: 28 Drives: 2013 370z Rep Power: 12	Why does the exhaust growl more aggressively for the first few minutes after starting I like it just curious though __________________

12-15-2013, 03:19 PM	#3 (permalink)
Z-Girl 12 A True Z Fanatic Join Date: Apr 2012 Location: Florida Posts: 4,105 Drives: Spirited Rep Power: 11716	i loooovvveeee that sound...FI made it even more enjoyable. sounds sooooo rumbly and agressive! TerribleONE, OMGWTFBBQ, jaedub and 1 others like this. __________________ 2012 Z-SOLD 2014 Nismo #565 Fast Intentions CBE/HFC/Swift/SPC/RJM/H&R-15/20mm/Z1 CAI/Headers/Intake Manifold w/Uprev Tune 328.31whp/263.64tq

12-15-2013, 11:42 PM	#9 (permalink)
SS_Firehawk Premium Member Join Date: Oct 2011 Location: Tampa Posts: 4,142 Drives: 13' Magma Red Nismo Rep Power: 7335	I love cold starts. On the other hand, I can't sneak out of the house. Even if I some how managed to push it around the corner, she can hear my car from a mile away, as in a literal mile from my house. waaaasabi, 370ZNISMO#704, TheGreatOne and 3 others like this. __________________ Old Car:GTM TSC'd 550whp / 410lbft tq @ 11.88PSI New Car: Under Construction

12-16-2013, 07:25 AM	#11 (permalink)
RonRizz A True Z Fanatic Join Date: Aug 2011 Location: Pine grove, Pa Posts: 2,136 Drives: 2 feet, 3 pedals Rep Power: 6775	Thanks, Elan... Makes sense now. Thats certainly one Boi who doesn't know the meaning of "Respect your elders", I mean, you can't just go around whipping faces, let alone rearranging them. SS_Firehawk and Z-Girl 12 like this. __________________ P99rs Head Unit--- Amps- 2 Pioneer Prs800d --- Zapco ST1000MX---Zapco ST-4XSQ---- SI BM mk5 Subs---SI TM65v2 Midbass--- SI M3 mids--- SI M25 xbl2 tweeters ----- 2016 MECA street class 3rd place at world finals Last edited by RonRizz; 12-16-2013 at 07:27 AM.

12-16-2013, 10:16 AM	#15 (permalink)
Chuck33079 A True Z Fanatic Join Date: Nov 2011 Location: Houston Posts: 12,265 Drives: 2011 370ztt Rep Power: 29539	So what mod do I need to "whip faces"? This is why they tell expectant mothers not to drink. __________________ 2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent

12-15-2013, 03:23 PM	#4 (permalink)
BGTV8 A True Z Fanatic Join Date: Dec 2009 Location: 03350 Australia Posts: 1,514 Drives: 09 Nissan 370Z M6 Rep Power: 39973	Combination of slightly higher rev's and over-rich mixture whilst the engine warms-up and the catalytic converters "flashing-up" - cats don;t work until they get to ~6-800DegC and that takes a couple of minutes

12-15-2013, 04:02 PM	#5 (permalink)
nmjaxx9 A True Z Fanatic Join Date: Jul 2011 Location: Middletown, Ct Posts: 5,853 Drives: 2011 Nissan 370z Rep Power: 26	My boi got a single exit gotttttt dammm when he starts whooooooo. He had a tune before and it was whippin faces. He told me after he got more hp he rearranged a old mans face the other day

12-15-2013, 04:23 PM	#6 (permalink)
OldFart Track Member Join Date: May 2013 Location: Carlisle, PA Age: 62 Posts: 682 Drives: 2011 Wannabe Nismo Rep Power: 960	Mine sounds like a massive exhaust leak and loud when started. I thought it might be the flex piping in the exhaust. As the exhaust gets heated up the flex piping expands sealing itself up.

12-15-2013, 04:36 PM	#7 (permalink)
Tazicon Track Member Join Date: Mar 2012 Location: Vegas Baby! Posts: 773 Drives: German/British cars Rep Power: 14	My G did it, my Z did it and my Porsche does it..........it's nothing out of the normal

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