SprtDesign

iTrader: (21)

Are there any GS300 Supercharger kits? Anyone know of any GS 300 out there supercharged?
Thanks.

TTurboPimp

iTrader: (12)

Why try to SC a GS3 when there are numerous bolt on Turbo kits on the market for a good price.....and the option to make way more HP??

bluelex

well 2 spots u can try if u want to do this.

prolex- it gives u like 245 to the wheels for 4500.00

toyomoto- it gives you about 280 rwhp for about 7k

and luxury motorworks is in the works right now for a kit..about 300rwhp from what has been leaked out..lol

SprtDesign

iTrader: (21)

Arent turbos more fun w/ manual transmissions? How's a turbo GS w/ AT ride?

Neo

iTrader: (3)

2 comes to mind: PLP(Pro Lex Performance) and LMW (Luxury MotorWorks).

GlobeCLK

iTrader: (5)

just use E-shift or gate shifting to keep RPM and boost up. But I don't how know strong the stock GS transmission is nor how much power it can hold. I've heard about 350rwhp max but not sure about that. Tranny cooler is highly recommend. Other transmission upgrades preferred.

mikeyboy

With a 2800stall or higher TC and a modified valve body, your tranny should be fine to slightly higher HP's, i'd say probably 400-450.

rominl

iTrader: (4)

umm, i doubt that though..... the stock 5 speed tranny it will hold up to about 350hp at the wheel i believe. by doing the tc and the vb, that's good for another 100? but i think 400 might be

aloha08isf

iTrader: (2)

exactly!....imo a supercharge gs3 will be like a modded gs4 speed wise....if I am planning to do FI in the future.....I would like to see a more significant increase in hp...so basically for a:

gs3: turbo makes more sense...I mean really...if you want around 300-350 hp.....you should have went with the gs4..
gs4: supercharger for most people

and of course the tt setup is always an option

LXOGOOD

Here's a flow chart from .Net that will help give everyone a good idea about the limits of an IS/GS300 car when going Forced Induction...

There are some very valid points being said here. Basically, it comes down to what you want your car to do. If you want a fast GS300 (400RWHP+) , then be ready to spend $15-25k on a good turbo setup, stand alone ECU, rebuild engine internals, tranny rebuild, install & tune, gauges, etc.

Many Super Chargers for the IS/GS 300 offer decent HP for the money. For under $10k, you can get 280-325 RWHP no problem. Install by a shop usually takes less than 6-10 hours with FMIC setup which is great for the pocket book. But getting more HP is where it get's tough. A smaller pulley can be added and offer more boost but then belt slippage is usually a problem. More boost from your SC produces more heat which slowly wears out the bearings in the charger.

All in all, IMO---> most IS/GS300 owners who go the Super Charger route, do this for safe and reliable HP, and/or don't have the funds for a good turbo setup.

Rule of thumb for anyone going F.I. in their IS/GS300 is too have enough cash in the bank to rebuild your motor. Cuz, somewhere down the line, it's bound to happen...