So some of you may remember a similar thread from a couple of years ago where I supercharged my gs430 and then promptly got rear ended and the car was totaled out...

https://www.clublexus.com/forums/bui...-06-gs430.html

Well I'm back with another nearly identical 2006 lexus gs430 (yes I have a type).


I picked this one up around 9 months ago for a pretty sweet deal at only 150k with all maintenance up to date. Spent a few months getting a few odds and ends tidied such as various bushings and reupholstering the seats before the real work began.






Got a good deal on the breaks and wheels off an ISF











decided to get a baseline dyno done to know what i am working with at managed 231/240 on a particularly hot and humid day in august. keep in mind this was a stress test with all accessories running, heat soaked engine on one of the hottest days of the year to get a worst case baseline.




then the time had finally come for me to put all the supercharger stuff back on the car at long last.



I still have to get pictures of the afr and boost gauges I have hidden in the glove box, but I did install a grom vline2 so I can run the torque pro app on it for real time data feedback.




for now im just waiting on my vf tuner to show up so I can start remapping the factory ecu. the car runs pretty well all things considered even with out a tune but i am not driving the car into boost until I have it remapped but for now its sitting pretty with a chrome delete and different exhaust tips. next on the list is getting it tuned and the exhaust reworked.

 

Excellent build, respect to your dedication. More pics of the brake setup? I want the same for my 460, but the calipers are hard to find.

 

yeah they come up from time to time you just have to jump on them when you can find them

 

So finally got everything running right and all my vacuum leaks and what not buttoned up. Had some difficulty getting the right amount of boost for a baseline tune dialed in, found out late model 3uz engines have a larger crank pulley than older models. Found a 3.8 inch pulley that puts boost at 6lbs and the factory computer handles timing and fuel adjustment just fine. Working on the tune using VF tuner now to dial in optimized fuel and timing values now but hopefully will be on a dyno in the next two weeks. After that I can go back to the smaller pulley and start targeting 8psi and start working a little more on some other chassis enhancements.

 

Besides the calipers and rotors, (and pads), were any other parts required? Was it plug and play?

 

other than trimming a dust shield its a direct bolt on.

https://www.350phi.com/isf.html

this site has all the info you need

 

There are some tuners who can remote tune these cars, are you going to tune the thing yourself or have someone?

 

as far as I can tell nobody has actually tuned one of these, there are a couple of people who could but I would rather just do it myself.

 

haven't made as much progress in the last year as I would have hoped but changing jobs getting married and moving will do that i guess, figured I would do a small update anyways.

most recently I got a hell of a deal on a set of lightly used ohlins coil overs designed for an isf that I couldn't pass up so decided to start working on a suspension refresh, sorry in advance I am terrible about taking pictures.

installed the coil overs, f sports sway bars front and rear with adjustable end links and urethane bushings




and then right after that I got a similarly attractive deal on a gently used rcf lsd that I am working on swapping to my stock 3.77 gear ratio before I put it in. that will also be getting new urathane bushings when I get around to putting it in.


in the background I have still been going back and forth with vf tuner trying to get more comfortable with the software since I have had limited sucess with piggybacking the computer as many have done for older models, this generation is more finicky about signal interception, and since there new update I am optimistic that I should actually be able to do a decent mild ecu reflash to correct my fuel trims and give me more power. so fingers crossed in the coming months I will have the ecu dialed in and I can go back to the dyno and see what it makes and keep improving on the tune.