LS - 3rd Gen (2001-2006) Discussion topics related to the flagship Lexus LS430

LS light performance build

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Old 08-30-20, 06:10 AM
  #31  
ChopsGS
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Originally Posted by Striker223
Im likely not going to go with coilovers honestly, I want the car to be stiff off center and during any sort of loading but relatively smooth when going straight on level pavement. All the coil-overs I looked at (Jesus there are a lot of them, didn't realize how many brands are on offer for Japanese cars) are using hard mounts with no isolation and overly stiff springs
I'm running Fortune 500 coilovers on my '01 LS, with 14k front and 10k rear. The shocks are custom valved for the curb weight of the LS430. Rides like a new sport luxury vehicle. Still smooth and comfortable, yet firm enough for much better handling. It feels like a modern BMW 7 series M-Sport. No bounce or NVH.


Originally Posted by Striker223
This go around I do not want to have to build up the trans, install billet input/outputs, billet TQ converter, axles halves, have a bunch of one off springs made, and build up a transfer case and instal higher rated front CVs among dozens of other changes including forcing induction and oil cooling/accumulator system. Went from 245hp flywheel to 690 wheel.
I don't like the slow, mush response and feel of the stock 5-speed. After the ECU tune, it's a little better, but still not to my liking. So now I'm in the process of securing a modified valve body for the A650E that will provide higher line pressure, quick, firm, crisp up/down shifts throughout all the gears, with 1st & 2nd being a little crisper yet, and 4th & 5th offering off-throttle engine breaking instead of the trans dropping into neutral (so to speak). That valve body combined with the ECU tune that's already on the car (both engine & trans) should really wake this car up.

Last edited by ChopsGS; 08-30-20 at 06:28 AM.
Old 08-30-20, 11:37 AM
  #32  
05ls430518
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Originally Posted by ChopsGS
If you're referring to the anti-sway bars, you shouldn't feel anything from them unless you're taking a corner. Straight line driving, you should feel nothing from them.
braces are going to make the car incredibly stiff talking from experience

Old 08-30-20, 01:44 PM
  #33  
Striker223
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Originally Posted by 05ls430518
Dude I highlighted, bolded and underlined braces do you have all the braces and sway bars on your car?

Also how are you tuning the stock ecu anytime I have tuned it the ecu reflashes back to stock when the car is shut off and I have to reload the tune.
Russian magic, they actually alter the ECU so that it sticks
Old 08-30-20, 01:51 PM
  #34  
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Originally Posted by Striker223
Russian magic, they actually alter the ECU so that it sticks
Just figured that out Iol I looked at there site its says 95-98 octane the closest we have in the states is 93 as far as I know. I want to know how they are doing it no US tuner has been able to crack them as far as I know.

Up to 10% power and torque gain guaranteed for any 3UZ engine (95 or 98 octane)
Old 08-30-20, 02:12 PM
  #35  
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Originally Posted by 05ls430518
Just figured that out Iol I looked at there site its says 95-98 octane the closest we have in the states is 93 as far as I know. I want to know how they are doing it no US tuner has been able to crack them as far as I know.

Up to 10% power and torque gain guaranteed for any 3UZ engine (95 or 98 octane)
That the RON number, our 93 octane is better than their 98 by a hair actually. We use RON+MON/2 to get our rating not straight RON like the euro zone

I am hoping to see more of an increase since they show 50ish at the wheels but obviously only guarantee 30ish and honestly for the price that still astounds me they can get that much for how little you pay.

Last edited by Striker223; 08-30-20 at 02:16 PM.
Old 09-04-20, 08:48 AM
  #36  
mavisky
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This is an interesting decision and I'm going to follow just to see what sort of issues you run into as I believe there will be many. First of many is getting the car to idle correctly with cams like that without the capability to tune it easily and locally.
Old 09-04-20, 12:54 PM
  #37  
notmill
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Originally Posted by Striker223
Russian magic, they actually alter the ECU so that it sticks
ECUs from all4swap, right? If I have any spare pocket change later this year, I'm looking into getting one.

Curious, but what have people been doing to alter and change the maps in the car? Is there some kinda tuning tool that'll work with the stock ecu?
Old 09-04-20, 01:05 PM
  #38  
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Originally Posted by notmill
ECUs from all4swap, right? If I have any spare pocket change later this year, I'm looking into getting one.

Curious, but what have people been doing to alter and change the maps in the car? Is there some kinda tuning tool that'll work with the stock ecu?
Yep, the fuel maps are not changeable but you can use piggy back type systems or play with injector sizes to hit the needed AFR or you can rip it out and go standalone. I'm leaning that way anyway since there is so little solid options that retain the stock ECU that are accurate enough
Old 09-04-20, 01:07 PM
  #39  
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Originally Posted by mavisky
This is an interesting decision and I'm going to follow just to see what sort of issues you run into as I believe there will be many. First of many is getting the car to idle correctly with cams like that without the capability to tune it easily and locally.
Oh there are always issues lol, they will be addressed as they come up. Idle is the easiest thing to figure out actually, it's making sure the fueling/spark under low engine speed high load with the altered DCR of these cams doesn't damage the engine.
Old 09-14-20, 10:23 PM
  #40  
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Originally Posted by Striker223
Installed my tuned ECU since I was bored.
Originally Posted by Striker223
Give me like an hour and I'll write my thoughts, I'm still wrapping up since I had it do the relearn while I did some other tasks around the house

Okay so 1/2 of my test run is done as of now, drove from my house in Lewis center to my parents estate near Marion being highly aggressive the entire drive intentionally. I got .2 MPG more than normal on vs when I drive calmly, I'm turning back now to see what cruise control yields. Power and response is greatly improved, in PWR mode the throttle responds instantly and the transmission doesn't gear hunt at all anymore. Very easy now to take advantage of any gap in traffic and it's impossible to launch without tire spin anymore since TC doesn't react in time to the increased TQ.
Originally Posted by Striker223
Im on the 5 and it's no joke as reactive and fast as a ZF8 speed now. Instant response gear to gear and doesn't hesitate anymore, I can't stress this enough that the throttle is 1:1 now and instant to pedal movement. Almost like a cable controlled car, any gap in traffic can be taken with ease and I wove three packs of cars on the trip up with a very controlled flow and no need to predict the cars shifts. It kept up very well to what I asked it to do.



Way back I saw 26.2 mpg and over 30 the entire time on 23 before and after Delaware, huge improvement since I normally got 22.4 on that exact stretch and speeds at about the same temperature. That's including a 130mph on ramp pull and 6 red lights with moderate acceleration, feels like a 460 now honestly and I think the cars should have come this way stock. It's awesome having the option of "430 lazy" in normal mode and sharp and direct in power.
ECU is in because I'm impatient and couldn't wait to do it with the suspension and brakes. It's outstandingly good and everyone with a 430 should consider it since the MPG gain offsets the requirement of 91-93 octane entirely and provides the option of increased response and still keeps the normal feel of the car in normal mode.
Old 09-15-20, 04:03 PM
  #41  
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Timed the car, getting exactly 5.89 seconds to 60 with me in it and slightly more than a half tank with about 100lb extra stuff in the trunk not including the spare etc. I'm very happy with this since last time I timed this car in a state not including a case of ammo and my range bag it only managed 6.8 with about the same amount of fuel
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Old 09-17-20, 08:27 AM
  #42  
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Originally Posted by Striker223
Timed the car, getting exactly 5.89 seconds to 60 with me in it and slightly more than a half tank with about 100lb extra stuff in the trunk not including the spare etc. I'm very happy with this since last time I timed this car in a state not including a case of ammo and my range bag it only managed 6.8 with about the same amount of fuel
All that from the remapped ECU? Sign me up!

p.s. How hard is the ECU to get to?
Old 09-17-20, 10:31 AM
  #43  
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Originally Posted by CSA
All that from the remapped ECU? Sign me up!

p.s. How hard is the ECU to get to?
Uh three clips, one plastic screw, a cover, three 10mm bolts, another cover, two more 10mm bolts and 5 connectors
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