Factory intake cover modification

Reply Subscribe

Thread Tools

Search this Thread

Feb 16, 2022 | 03:52 PM

lowacura

Thread Starter

10th Gear

Joined: Feb 2022

Posts: 14

Likes: 0

From: TX

Factory intake cover modification

Wondering if anyone has attempted to remove the cloth cover and surrounding on the top side of the air filter cover on their ISF? I have a k&n filter now but it seems like the top cover is restricting half of the air flow?

Feb 16, 2022 | 04:45 PM

Rickna

Pole Position

iTrader: (3)

Joined: Mar 2014

Posts: 2,025

Likes: 282

From: ConnectiTAX

K & N intake requires you to remove the entire stock air box.

Last edited by Rickna; Feb 16, 2022 at 04:49 PM.

Feb 16, 2022 | 05:40 PM

flowrider

Lexus Champion

iTrader: (9)

Joined: Nov 2008

Posts: 11,280

Likes: 2,401

From: Arizona

OP didn't say he had a K&N intake he said he has a K&N filter:

https://www.knfilters.com/air-filters/lexus/is-f

And Yes - folks have removed the filtering material from the top intake cover. I did it before I replaced it with a Takeda intake.

Feb 16, 2022 | 05:45 PM

lowacura

Thread Starter

10th Gear

Joined: Feb 2022

Posts: 14

Likes: 0

From: TX

Quote:

Originally Posted by sickpuppy

Forgot to mention it was a k&n drop in filter.

Is there a difference when you remove the white material? Noise difference? Slight noise difference?

Feb 16, 2022 | 05:53 PM

Rickna

Pole Position

iTrader: (3)

Joined: Mar 2014

Posts: 2,025

Likes: 282

From: ConnectiTAX

Quote:

Originally Posted by sickpuppy

You're right. And my medication seems to working...

Feb 17, 2022 | 05:48 AM

Jwconeil

Moderator

Joined: Apr 2017

Posts: 3,069

Likes: 978

From: Indiana

I’m curious why you run an aftermarket intake? The oem one is very good.

Feb 17, 2022 | 05:59 AM

Rickna

Pole Position

iTrader: (3)

Joined: Mar 2014

Posts: 2,025

Likes: 282

From: ConnectiTAX

Quote:

Originally Posted by Jwconeil

I’m curious why you run an aftermarket intake? The oem one is very good.

I know the consensus is that a few ponies are lost with an aftermarket intake, but I like the sound.

Trending Topics

Americans Are Keeping Their Cars Longer Than Everâ€”and Remaking the Auto...

302

7.4k
Current Gas Prices

655

19k
Steve's Pacifica replacement thread

434

14.8k
V35A TTV6 Recalled Again (Tundra, LX, GX affected)

539

22.9k
What makes someone a car enthusiast?

83

2.6k

Feb 17, 2022 | 06:14 AM

Joe Z

Lexus Fanatic

iTrader: (10)

Joined: Nov 2004

Posts: 13,441

Likes: 1,082

From: Under an IS F since 2008

Quote:

Originally Posted by lowacura

I am NOT a fan at all of the K&N and/or oiled drop in filter.. It requires additional maintenance and for many a CEL down the road when the oil particles attach themselves to the MAF sensor element.. which then also requires cleaning..

Also I would leave the Carbon Filter attached to the lid as is.. Over a decade ago members measured a HP loss when removed…

Quote:

Originally Posted by lobuxracer

The teabag filter is a carbon filter to remove hydrocarbons when the engine is sitting. The most difficult emissions test to pass is the SHED test. The tester seals the car in what amounts to a shed and measures the hydrocarbons the car emits over a three day period. Exhaust emissions are a cakewalk compared to this test. The filter is critical to ensuring any hydrocarbons in the intake are absorbed instead of released to atmosphere.

Joe Z