Modded my airbox - If you haven't, DO IT!
05-28-07 | 12:36 PM
#16
Lead Lap
Joined: May 2006
Posts: 444
Likes: 2
From: CA
so whats the consensus here? I did the Lexkost mod, and it sounded real nice, but like COLS400 (? - the guy with the 98-00 Silver LS kitted on air bags) said, under low RPMs, the engine seemed to bog down.
so is this mod
or 
?
so is this mod
or ?
05-28-07 | 01:13 PM
#17
Pole Position
Joined: May 2007
Posts: 347
Likes: 0
From: PA
I would think the consensus is do what you want with your own car 
I did a version of the Lexkost mod and i don't experience bogging and love the sound and the throttle response so do what you will and be happy
just my 2 cents.
I did a version of the Lexkost mod and i don't experience bogging and love the sound and the throttle response so do what you will and be happy
just my 2 cents.
05-28-07 | 05:01 PM
#18
Lexus Champion
Joined: Oct 2005
Posts: 1,884
Likes: 4
From: TX
I did the Lexkost mod and have not seen a decrease in mileage. As a matter of fact I have seen the average MPG of the tank go from 22-23 to 25-27 since the mod. I am not an engineer and cannot comment on the thorough earlier remarks. I only changed from the OEM filter to a high flow WIX filter (no oil required). I did the Lexkost as prescribed and it has not adversely affected the car. I will for this week revert back to my OEM set up to see what the results are. I don't mind buying a cold air intake - just wanted to try this mod first.
05-28-07 | 06:02 PM
#20
Bogging down? Did you guys reset the ECU after installing the air filter?
I haven't noticed any bog down problems. In fact, I've notice that the engine feels pretty liberated.
BTW, the MAF is not only affected by the density of the air passing through it, but the air volume. I've focused eliminating the bottlenecks of the stock system and allowing the engine to blow in more air (no such thing as suction when referring to vacuum). I would love to figure out a way for a less restrictive ram or cold air setup, but that will have to wait.
I haven't noticed any bog down problems. In fact, I've notice that the engine feels pretty liberated.
BTW, the MAF is not only affected by the density of the air passing through it, but the air volume. I've focused eliminating the bottlenecks of the stock system and allowing the engine to blow in more air (no such thing as suction when referring to vacuum). I would love to figure out a way for a less restrictive ram or cold air setup, but that will have to wait.
Last edited by avalon42; 05-28-07 at 06:08 PM.
05-28-07 | 07:22 PM
#21
I did the Lexkost mod and have not seen a decrease in mileage. As a matter of fact I have seen the average MPG of the tank go from 22-23 to 25-27 since the mod. I am not an engineer and cannot comment on the thorough earlier remarks. I only changed from the OEM filter to a high flow WIX filter (no oil required). I did the Lexkost as prescribed and it has not adversely affected the car. I will for this week revert back to my OEM set up to see what the results are. I don't mind buying a cold air intake - just wanted to try this mod first.
07-26-07 | 10:47 AM
#23
Driver
Joined: Dec 2004
Posts: 172
Likes: 0
From: PR
I know your are just making a light hearted joke Avalon but you truly speak the truth this airbox thing being modded poorly is getting out of hand.
These are poor quality modifications done with no research to cars that are not civics but seem to be treated like one by these backyard techniques.
I strongly urge people to consult a professional before hacking apart your car because it sounds better and makes your pants feel you are faster . This kind of poor design is reducing the gas mileage and reliability of your car as would any short arm intake.
There are much better ways of going about doing this such as the srt intake with a proper heat shield with fuel management .
Just my 2 cents , but i have a civic to destroy and tinker not a beautiful machine like my LS to subject this type of mod 2.
These are poor quality modifications done with no research to cars that are not civics but seem to be treated like one by these backyard techniques.
I strongly urge people to consult a professional before hacking apart your car because it sounds better and makes your pants feel you are faster . This kind of poor design is reducing the gas mileage and reliability of your car as would any short arm intake.
There are much better ways of going about doing this such as the srt intake with a proper heat shield with fuel management .
Just my 2 cents , but i have a civic to destroy and tinker not a beautiful machine like my LS to subject this type of mod 2.
Ideas? Thoughts?? Pics??
I have headers installed and ifeel the car is SLOWER than before, it makes me think its lack of intake.. but since there is no intake available.. anything to mod it correctly is fine... so pics are in order.. Thank you.
Last edited by cartechpr; 07-26-07 at 10:54 AM.
07-26-07 | 12:57 PM
#24
Here is an SRT intake from a GS400 on an LS400.
The thread is located here
http://us.lexusownersclub.com/forums...7123&hl=wiring
The thread is located here
http://us.lexusownersclub.com/forums...7123&hl=wiring
07-26-07 | 10:51 PM
#25
Driver
Joined: Jan 2006
Posts: 159
Likes: 0
From: Atlanta, GA
The SRT Intake does NOT fit these cars.. if you have .. please let me know.. I have one laying around there that i can't fit because it hits the fan... AND it hits the thermostat housing... One more thing.. you do have to hack away the heat shield as it doesn't fit correctly, it gets in the way of all the tubings that run around that part.
Ideas? Thoughts?? Pics??
I have headers installed and ifeel the car is SLOWER than before, it makes me think its lack of intake.. but since there is no intake available.. anything to mod it correctly is fine... so pics are in order.. Thank you.
Ideas? Thoughts?? Pics??
I have headers installed and ifeel the car is SLOWER than before, it makes me think its lack of intake.. but since there is no intake available.. anything to mod it correctly is fine... so pics are in order.. Thank you.
what kind of headers do you have?
09-23-07 | 04:09 PM
#29
Thread Starter
Lexus Test Driver
Joined: May 2005
Posts: 1,405
Likes: 3
From: International
A while ago JBrady was working with a manufacturer to make some custom shorty headers, and there are also some Chinese S&S clone headers available. I don't think there are any that are better than the ones you already have.
09-23-07 | 05:08 PM
#30
Driver
Joined: Dec 2004
Posts: 172
Likes: 0
From: PR
Here is an SRT intake from a GS400 on an LS400.
The thread is located here
http://us.lexusownersclub.com/forums...7123&hl=wiring
The thread is located here
http://us.lexusownersclub.com/forums...7123&hl=wiring