I was just wondering if anyone of you fellas is running NOS on your supercharged GS? It would be an easy gain 50HP or 100HP (dual stage). Dual stage not to be confused with "Stage II." On the stock injectors, 100HP+ extra would not be such a great idea, but if you get the SC and new 440 injectors, why not? Just wondering if anyone gave this option much thought or explored the opportunities. Thanks.

 

I know of someone who has the SC system, and uses NOS, but the car is used mostly for dragging now. I am sticking with just the SC for now.

 

What kind of shifting issues? The only thing I can think of is hitting the rev limiter, but I figured that can be adjusted by the tranny ecu, valve body upgrade, and LSD gearing. Please correct me if I'm wrong. It is an option I am seriously considering and need some more input....

What is the LSD gearing you guys are running now?

 

Well, the problem is who makes a tranny ecu that works for the GS400? Thats what I am waiting on myself. If I had that, and was able to set my shift points, my car would be a beast!!!!
I have everything but that ECU, and I hit the rev limiter if I am not careful. And when you hit it, it WILL shut you down!

If you are going to use dual NOS system with a stage 2/3 SC, you can forget about your stock pistons, and rods. You will have MAJOR blow-by, and probably would fry a piston/and rings. Also you would have to bullet-proof your transmission, add a tranny & oil cooler. You would need some custom forged pistons/rings, and those things are EXPENSIVE for Lexus, especially the rods (believe me! I KNOW!). So you would have to say goodbye to your stock transmission. Also say goodbye to your stock injectors, and fuel pump. No way can those parts keep up with that amount of power. If you are pushing over 450 or more at the rear, those things are necessary, or your engine would blow sooner than later. And after you have done all of that, the car would definitely be a drag vehicle. And probably would be in the shop more than on the street. Just because of the nature of the GS. It IS a luxury vehicle, and doing all of that would definitely change the purpose of the vehicle.

IMHO

Lee

 

just thinking about that is insane... that thing would pull anything on the road



drew

 

What is the RWHP you are putting down with 7.5psi? When you say that "you know" the rods are expensive, is it because you looked into getting them or fried something? I'm going to put on a tranny and oil cooler either way. The way I drive already, this issue has become a minor problem. Very good input though. I might opt for a single 50 shot. That would put me in the 400RWHP range and I think with a valve body upgrade, the tranny might just might hold up for a while. I'm going to have the pistons done either way since my goal is 500RWHP and the tranny will be rebuild later on. This is just something for now to keep me occupied.

What do you guys think about a single 50 shot? Also, what has Mo done to correct the rev limiter hitting? Do you hit the rev limiter becasue of the extra .5-1lb of boost? I'm going to definitely talk to Mo about that tranny controller. If he can't do it, Level10 is near by and they just might have a solution for me.

 

I'm running a TRD LSD with the stock 3.23 gearing.

As for NOS it would be more problems than power...IMO

A Hui Ho

 

Are you hitting the rev limiter too? What's the psi you run? Have you considered 3.76? Why or why not? Did you have a chance to dyno that monster? Sorry for the storm of questions, but I would just like to get some honest answers so that I can choose the best route for myself. As always, thanks in advance.

Oh and....why a different intercooler. I believe Mo provides Spearco?

 

I was wondering, Do you have a SC right now? Because if not how would you get 400 rwhp with only a 50 shot NOS.

Also let the CL community know if Level 10 has a tranny ECU, I know I'm waiting for someone to come out with one.

As for the 50 shot NOS, I wouldn't go with it, unless you are planning to really upgrade your engine...

Aloha

 

I agree the SC is enough for me!! Thats stage 4...

 

No, I will be getting my stage2 or 3 or whatever you want to call it on ~May 29 and one of my requests was that it has to make 350RWHP to the wheels. I figured I could add an extra 50 shot and make that magical 400RWHP. I know it would be harsh on the tranny, but could possibly be doable. And if I get that tranny ECU along with the valve body, I'm almost positive it will be doable. Pushing it, but doable. Call me crazy, but I would love to have that 400RWHP pop up on a dyno.

There's already or soon will be a modest 430RWHP GS runnning around the NJ area. I'm going to try to get in touch with the owner to get a feedback about any problems as far as reliability goes. He too had his tranny done by Level 10, so it will be interesting to see what he says.....We'll see. As soon as I get the info I'll keep you updated. In the meantime, you guys have any 1/4 mile slips? If not, then what are you still waiting for?

 

Yeah if I WOT off the line it'll hit the rev limiter in 1st gear after that its ok. The reason it hits the limiter, Mo told me that the car is seeing boost too fast and the ECU and tranny ECU can't reconize it and that's why its won't shift correctly. I was told on starts to press only 1/2 to 3/4 throttle to be in the optimum boost range and the ECU will be able to read the boost and shift correctly. If you ask Lexciting he'll tell you how to drive with the SC for maximum results, he saw Mo test drive his car.

I haven't dynoed my car yet, because I'm waiting for Mo to send me the stage 3 parts.

No problems with the questions we all need to help each other out here...

Aloha

 

What are the stage 3 parts if you don't mind me asking? What kind of injectors are you running right now...440's?

 

With stage 2, I ran like 14's with my 20's on...and 13's with the stocks. Everyone's telling me that I should be running faster being @ sea level, but if you haven't seen our track then it would be hard to explain...but for an example last year we had an import showoff and some mainland guys came down here to do some exhibition runs, well in Cali they were running low 10's, here in Hawaii they were running low to mid 11's, that should give you so idea on the condition of our track...

Aloha

 

the parts are: intank fuel pump, 8 or 9 lbs pulley, send my ECU for reprogramming, send my trans valve body for modifications, send the SC for modification for oil lines, might be some other stuff but I can't remember right now...

Aloha