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

Performance Mods for 1st Gen LS

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Old 04-06-02, 06:27 PM
  #46  
UZZ32
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Default 1UZ-FE V8 bits

My modified exhaust cams are back and in the car - just waiting on the shims.
Some pictures on how to do your own valve job (adjust the shims) - you may only need to replace a couple - I have heard that a tapping noise from the battery side of the engine is the intake shims near the firewall - you can still reach these ones without taking off the belt.

The intake between the AFM and the throttle with the built in resonator is best left alone.

See pictures and more words to all this stuff on my site.

What happened to the ECU test - I couldn't find the rest of the thread - isn't it a month old now? - any results?

best regards
Old 04-12-02, 02:00 AM
  #47  
v8huntr
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Default ls400 ecu diagram

hi
do you have ecu diagram for 96"LS400? i have been looking for it but i can't find it anywhere. i'm tring to install universal fuel controler on my 96"LS400 but i just can't find the diagram.
Old 04-12-02, 03:04 AM
  #48  
UZZ32
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http://www.apexi-usa.com/documentation.asp

Look at the revspeed meter manual - the pinouts for the Toyota ECU are there.
http://www.apexi-usa.com/productdocu...speedmeter.pdf

This should get you started.

You'll never find a wiring diagram for inside the ECU though (if you do please let me know!)

best regards
Old 06-08-02, 12:56 PM
  #49  
retrodrive
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Nothing happened to ECU test. I don't know what the deal is but whoever tested it said that it did not work with our cars which is kind of weird since SC and LS are the same car.
Old 08-07-02, 03:37 PM
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epineffreen
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i just joined club lexus, i was curious about what people can do with this great car. i have a 1990 LS 400.

Loule thanks for ur post. gave me a lotta ideas to adding mods to my car.

what kind of bulbs can i use to replace my fogs. i can't seem to find the number. thanks

Last edited by epineffreen; 08-07-02 at 03:40 PM.
Old 10-12-02, 12:07 PM
  #51  
SCV8
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UZZ32,are you using the intake cams over on the exhaust side?
Many OHC engines use a longer duration cam on the intake,that's why I'm just wondering.
regards,
John
Old 03-10-03, 11:21 AM
  #52  
SQ-LS
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Yeah, I think it is time for a update.
Give me a few days to collect some info and I'll post a new one when I have time.
Old 04-13-03, 09:16 PM
  #53  
Pagong
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Any of you guys contemplate on adding a Big Shot nitrous system? Do you guys think the motor can handle a 100 or 200 shot of giggle gas,? given that the motor is in good and able condition.
Old 08-13-03, 04:38 PM
  #54  
Jasoneo5
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I don't know, it is a strong engine but most of them are pretty old. What is the Max that most would take?
Old 09-21-03, 06:23 AM
  #55  
Wide LS
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I would say max 150 no more than that I think 200 is way too much IMHO
Old 03-07-04, 11:56 PM
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blklexguy
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Originally posted by GhoSStRyda
why would you put a borla on a japanese car? IMO, thats kinda tacky..... i would be like an SS with trust exhaust or somethig anyways, thats just me... btw, i didn't intend for that to be a flame...

have any of you ls4 fellas timed your cars at the strip? or have an idea as to what the 1/4 mile time is, with and without mods? it would be interesting to find out since the ls4's dimentions are pretty similar to the SS

I have a 92' LS and i have a borla cat back exhaust system on it, and honestly it is EXACTLY what I wanted and it is not tacky, i have the L-Tuned tips on it.

I know i own an import car, there is nothing wrong with putting american parts on it, done right it can be the correct application!!!!!
Old 08-26-04, 11:49 AM
  #57  
Lextreme
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Eric,,

U should get a college degree in Lexusology.
Old 01-16-05, 01:50 AM
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carlex
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Ya... thanks for the info
Old 08-13-05, 07:35 PM
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Brandicus
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I dont suppose there is any way to add onto the performance of my 93 LS while not drastically increasing the engine noise? I love how quiet the car is and i think it can be the ultimate sleeper
Old 08-28-05, 04:44 AM
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michael27
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Unfortunately,power and noise really come hand in hand,and if you want one(ie power) you usually cant have it without the associated noise. It is a shame to make such a smooth, quiet luxury car loud, but a well selected exhaust can give a decent performance increase without too much associated noise......


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