Free HP mod, stock Air box lid charcoal filter delete! - TundraTalk.net

Cyprex · 06-08-2008, 04:35 PM

Note: I am making this thread because I spent an hour searching for info on this with no luck. Special thanks to Dez and sxd for telling me to rip it out

Remember, if you install any CAI or after market intake, you will be with out this charcoal filter. So why keep it!

Time: 30 sec

1. Pry off the charcoal filter with a flat head screw driver. Start with a corner, then just it just pops off with little force

Example of how it pops off: Note: No need to cut the filter.

2. Test drive.

The charcoal filter is very restrictive. Using a can of compressed air, blowing through the charcoal filter cuts the air down to only a trickle. Just look how thick this 7 layer beast is:

Wow, what a diffrence!
Loud, deap throaty sound up front!
Increased throttle response!

Next steps: Im guessing, find and install a drop in filter. Then dyno this vs a common CAI.

Estupido · 06-08-2008, 04:41 PM

Thanks. I'm gonna do that tonight!

sxd45 · 06-08-2008, 04:43 PM

You know with a little smoothing out of the lid, im sure there will be more of a gain, all those ridges do is slow the air flow to make it quieter, I will take a dremel or grinder to mine soon and update everyone.

Estupido · 06-08-2008, 04:53 PM

What's that filter for anyway?

sxd45 · 06-08-2008, 04:54 PM

Robbing horsepower?

Estupido · 06-08-2008, 04:55 PM

Quote:

Originally Posted by sxd45

Robbing horsepower?

lol... besides that?

djb383 · 06-08-2008, 04:57 PM

.......don't see how it can be restrictive as these trucks run lean....ULEV II. According to K&N, airflow is only 1-2 mph across the filter element at 70 mph. Again, if the factory intake was restrictive, it would be causing a rich operating condition.

Can Oil Come Off Our Filters? High Airflow Testing & Engine Air Filter Dynamics

Estupido · 06-08-2008, 05:01 PM

I thought they run rich!

TexBiker · 06-08-2008, 05:17 PM

Quote:

Originally Posted by SRT8TUNDRA

What'ss that filter for anyway?

Traps fuel vapors after the engine is shut down. It's part of the smog controls.

Estupido · 06-08-2008, 05:18 PM

Quote:

Originally Posted by TexBiker

Traps fuel vapors after the engine is shut down. It's part of the smog controls.

Thanks, TB.

ramoine · 06-08-2008, 05:20 PM

Very inventive mod . Thanks for sharing !

Toxarch · 06-08-2008, 05:39 PM

Removing it will make the intake a little louder. I popped mine out after about a month of owning the truck. Supposedly the charcoal is there to clean any backflow gases when you turn the truck off.

Estupido · 06-08-2008, 05:48 PM

Yeah I just did it! Intake is a little louder and seems to be just a little peppier. May be my imagination though. Very easy mod. Took me about 10 minutes.

sxd45 · 06-08-2008, 05:52 PM

Butt dyno dosent lie!

Estupido · 06-08-2008, 06:03 PM

Quote:

Originally Posted by sxd45

Butt dyno dosent lie!

Yeah, the butt dyno told me I picked up .99 hp and 1.7 ft lbs of torque!

06-08-2008, 04:35 PM	#1 (permalink)
Cyprex Senior Member Join Date: Aug 2007 Location: San Jose, Ca Posts: 165	Free HP mod, stock Air box lid charcoal filter delete! Note: I am making this thread because I spent an hour searching for info on this with no luck. Special thanks to Dez and sxd for telling me to rip it out Remember, if you install any CAI or after market intake, you will be with out this charcoal filter. So why keep it! Time: 30 sec 1. Pry off the charcoal filter with a flat head screw driver. Start with a corner, then just it just pops off with little force Example of how it pops off: Note: No need to cut the filter. 2. Test drive. The charcoal filter is very restrictive. Using a can of compressed air, blowing through the charcoal filter cuts the air down to only a trickle. Just look how thick this 7 layer beast is: Wow, what a diffrence! Loud, deap throaty sound up front! Increased throttle response! Next steps: Im guessing, find and install a drop in filter. Then dyno this vs a common CAI. __________________ 07 5.7L Sky Silver Double Cab -EGR Vents/Bug guard -TRD Sway bar -Corsa Touring Exhaust -Charcoal filter delete Gallery Last edited by Cyprex : 06-25-2008 at 11:37 AM. Reason: Added Easy Way Instructions.

06-08-2008, 04:41 PM	#2 (permalink)
Estupido Super Moderator Join Date: May 2008 Location: Florida Posts: 10,196	Thanks. I'm gonna do that tonight! __________________

06-08-2008, 04:43 PM	#3 (permalink)
sxd45 Super Moderator Join Date: Feb 2008 Location: friendswood tx Posts: 3,757	You know with a little smoothing out of the lid, im sure there will be more of a gain, all those ridges do is slow the air flow to make it quieter, I will take a dremel or grinder to mine soon and update everyone. __________________ White Tundra Club Member #1 http://www.screenfx.tk/

06-08-2008, 04:53 PM	#4 (permalink)
Estupido Super Moderator Join Date: May 2008 Location: Florida Posts: 10,196	What's that filter for anyway? __________________ Last edited by Estupido : 06-08-2008 at 06:05 PM.

06-08-2008, 04:54 PM	#5 (permalink)
sxd45 Super Moderator Join Date: Feb 2008 Location: friendswood tx Posts: 3,757	Robbing horsepower? __________________ White Tundra Club Member #1 http://www.screenfx.tk/

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06-08-2008, 04:57 PM	#7 (permalink)
djb383 Senior Member Join Date: Nov 2007 Location: Midland, The Republic of Texas Posts: 226	.......don't see how it can be restrictive as these trucks run lean....ULEV II. According to K&N, airflow is only 1-2 mph across the filter element at 70 mph. Again, if the factory intake was restrictive, it would be causing a rich operating condition. Can Oil Come Off Our Filters? High Airflow Testing & Engine Air Filter Dynamics __________________ '07 RCSB 5.7 SR5 The Silver Bullet.........Yep, it's gotta HEMI

06-08-2008, 05:01 PM	#8 (permalink)
Estupido Super Moderator Join Date: May 2008 Location: Florida Posts: 10,196	I thought they run rich! __________________ Last edited by Estupido : 06-08-2008 at 06:04 PM. Reason: grammar

06-08-2008, 05:20 PM	#11 (permalink)
ramoine Banned Join Date: Jan 2008 Location: Huntington,Indiana Posts: 5,586	Very inventive mod . Thanks for sharing !

06-08-2008, 05:39 PM	#12 (permalink)
Toxarch Senior Member Join Date: Apr 2008 Location: Fort Worth, Texas Posts: 2,861	Removing it will make the intake a little louder. I popped mine out after about a month of owning the truck. Supposedly the charcoal is there to clean any backflow gases when you turn the truck off. __________________ Banned from IBTO-Fah-Q for having "a smug and elitist attitude" who was also "a good guy and... very informative". Yeah, doesn't make sense to me either. Nautical Blue 2007 SR5 Crewmax 5.7L 4x4 All mod descriptions and pictures © 2007-2009 by Toxarch. They may be copied only for personal use and the mods may be done for non-profit only.

06-08-2008, 05:48 PM	#13 (permalink)
Estupido Super Moderator Join Date: May 2008 Location: Florida Posts: 10,196	Yeah I just did it! Intake is a little louder and seems to be just a little peppier. May be my imagination though. Very easy mod. Took me about 10 minutes. __________________

06-08-2008, 05:52 PM	#14 (permalink)
sxd45 Super Moderator Join Date: Feb 2008 Location: friendswood tx Posts: 3,757	Butt dyno dosent lie! __________________ White Tundra Club Member #1 http://www.screenfx.tk/

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