LS - 1st and 2nd Gen (1990-2000) Discussion topics related to the 1990 - 2000 Lexus LS400

Air Intake Mod + ECT Reprogram = Power

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Old 05-08-06, 07:30 PM
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clean95
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hey lex i did the intake mod on my ls now what type of k&n is that and where did u buy it? and is it any louder than with the stock filter with the intake mod?i wold like mine louder
Old 05-08-06, 07:31 PM
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sonyman
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I haven't done this mod (and won't be doing it) but can tell you that doing a mod like this will definately make the intake louder.

Scott
Old 05-08-06, 08:13 PM
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Lexkost
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Originally Posted by clean95
hey lex i did the intake mod on my ls now what type of k&n is that and where did u buy it? and is it any louder than with the stock filter with the intake mod?i wold like mine louder

I used the stock replacement by K& M, that way I can put it back stock with the K&N for doing the Smog.
Old 05-11-06, 05:39 AM
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DroppedGS
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Originally Posted by Lexkost
Now install a K& N filter, use a piece of plastic door edge protector and install it around the K& N
Where did you get that rubber piece to go around the filter from?
Old 05-11-06, 01:08 PM
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absolut
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Originally Posted by DroppedGS
Where did you get that rubber piece to go around the filter from?
any home improvement store would have it.
Old 05-12-06, 11:38 AM
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Lexkost
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Originally Posted by DroppedGS
Where did you get that rubber piece to go around the filter from?
It is an aftermarket door edge strip for a car . ( any auto parts store ).
The rubber bumper is from a hardware store. ( the bumper is needed beacuse the air box will rest on wheel well because the front half of air box is no longer used )
Old 05-12-06, 05:40 PM
  #22  
clean95
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so was it louder with the k & n than the stock one?
Old 02-08-07, 09:19 PM
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TJW98LS
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I hope you guys dont mind me bringing back old posts! But I notice that sometimes in thrid gear it will shift at 5 RPMS...now I know my previous LS shifted at like...6300 LOL, so something is wrong here. Do I just follow these steps and it will fix this? Previous owner was an old man, and never got up on it EVER.
Old 02-08-07, 09:32 PM
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PureDrifter
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reset efi and drive the shat outtta it for a week

itl be fine.
Old 02-08-07, 10:15 PM
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Abear
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Originally Posted by PureDrifter
reset efi and drive the shat outtta it for a week

itl be fine.
Yeah, just unhook the battery for like 15 minutes, then at midnite or so, take it out and run the crap out of it.
Old 02-09-07, 10:35 AM
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DCLexus
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So, what exactly does disconnecting the battery for 15 minutes and then driving the car hard with the ECT on do? Does it just train the transmission to shift latter or does it change the way the engine runs?

Like TJW98LS, my car was also originally owned by an older couple. Would this procedure change how it drives?
Old 02-09-07, 12:07 PM
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Abear
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ECT stands for Electronically Controlled Transmission. Disconnecting the battery will make the car forget the way you drive because it resets the ECU. So after resetting the ECU, you want to make sure your car will be good, so go run the crap out of it to make it think you like to drive fast, and it will make the transmission shift into the redline, which is good. I did this to my car the other day, and I have the SAFC2 which tells you the highest RPMs, and mine was shifting at 6448, and redline is 6500. Im gonna disconnect it again later and go try and set tonight.
Old 02-09-07, 03:04 PM
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PureDrifter
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you you dont have to unhook the battery.

just pull the main E.F.I. fuse/relay for a couple minutes.

that way you dont lose memory settings.
Old 02-10-07, 08:14 PM
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steveski
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I will try Lexkost's air box mod since it is cheap. My car shifts at redline already so I will skip the ECT reprogram for now. I'll post the difference.
Old 02-10-07, 09:08 PM
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PureDrifter
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i did this (with the factory filter, dont like oiled filters too much) and dear god the intake sounds GREAT.

il post a video someday


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