Exhaust @ Idle

by **bparker** » Thu Feb 10, 2005 7:53 pm

Are there any mods/exhaust setups that have a drastic change on the sound even at idle? Or how is that accomplished...

by **Mole** » Thu Feb 10, 2005 8:35 pm

What are you trying to achieve?

by **DatSRBoi** » Fri Feb 11, 2005 7:04 pm

Sure thing. Having none on it.

by **TadS** » Sat Feb 12, 2005 6:14 am

Yeah, make it breathe more, especially at the throttle body. Remember more air in = more air out = different sound.

by **FLASH** » Sat Feb 12, 2005 12:36 pm

They don't make aftermarket Throttle bodies for the 1MZFE...do they?

by **bparker** » Sat Feb 12, 2005 12:47 pm

would a CAI have a bigger sound difference than short ram?

Website · by **Turbosolara** » Sat Feb 12, 2005 3:23 pm

take out the mid pipe resonator with up size exhaust pipe.

by **bparker** » Sat Feb 12, 2005 4:27 pm

so then what pipe size should I go with for a non-S/C 1mz-fe ?

by **TadS** » Sun Feb 13, 2005 6:06 am

FLASH wrote:They don't make aftermarket Throttle bodies for the 1MZFE...do they?

A machine shop can redo yours for 150-200.

Website · by **Turbosolara** » Sun Feb 13, 2005 12:46 pm

2.5" is about right but 2.75 might feel more different. 3" would sounds louder and it might shift your powerband from low end to high end . this happened to my 9 240sx NA, which I lost low end power after i installed 3" catback system. But the RPM resposne faster and while it reach high end, the power was incredible.

by **adam2562** » Mon Feb 14, 2005 5:57 am

advance your timing on your exhaust cams 1 tooth on the cam gear... it will give it a an idle like you have mild cams.... onmy car atleast.. and i took outmy resonator with stock exhaust piping and TRD exhaust.. i love the way my exhaust sounds

by **FLASH** » Mon Feb 14, 2005 2:51 pm

adam2562 wrote:advance your timing on your exhaust cams 1 tooth on the cam gear... it will give it a an idle like you have mild cams.... onmy car atleast.. and i took outmy resonator with stock exhaust piping and TRD exhaust.. i love the way my exhaust sounds

exactly how do you do that? DIY Please!

by **adam2562** » Mon Feb 14, 2005 7:16 pm

umm... i didnt do it.. but from what my mechanic told me.. when he replaced mytiming belt he notched over my exhauts cam on both heads 1 tooth... so i guess if u kno how to do a timing belt then u can do it...

by **swimshady906** » Mon Feb 14, 2005 7:58 pm

So he did that so you would have more over lap to create a vacuum to pull the air in through the intake valves open or what? is that what advacing does? Or is this like ignition advancing ..... someone?

http://user.mc.net/~brad · by **jazzlara** » Mon Feb 14, 2005 9:39 pm

swimshady906 wrote:So he did that so you would have more over lap to create a vacuum to pull the air in through the intake valves open or what? is that what advacing does? Or is this like ignition advancing ..... someone?

well, from what i understand about the 4 stroke engine, after combustion, the piston travels from downward pressure then back up while the exhaust valve opens to push out spent fuel.

by advancing the exhaust cam, the valve would open sooner, most likely when the pistons is closer to the most bottom point as opposed to stock cam setting which would open later, as the piston has begun to rise. He is getting more exhaust out quicker and most likeley giving it a 'meaner' sound

but im probably off in some way

Exhaust @ Idle

Exhaust @ Idle

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