Is350
Super charger has good review for the 2is.
Stewbie got 350 WHP with his Charger and bolt ons. Means youre getting maybe roughly + 50 for the charger and 20 from bolts for about 5-6k?
That seems pretty relative to me considering how difficult it is to super charge the car.
BUT! An ISF would definitely be easier.
Personally I wouldnt supercharge. If you bought the IS with intentions on getting more power, then unfortunately this may not be the right platform for you
. Good luck with your decisions! IMHO, the 350 is plenty fast for the roads.
Personally, I want a car that is quicker than most on the road and super reliable. IS350 does a great job at that. Others want a car that they can engine mod to the ****, which it is not great for.
And with supercharging, unless you already have a lot time and money invested into the car, you would probably be better off getting a faster car, like the ISF.
The IS250 and IS350 are pretty bad for modding. A lot has to do with the fact that no one can tune our vehicles (anyone who says they can is just BS). But if you have the mod bug id suggest you do intake, headers and exhaust since thats pretty much all you can do power wise.
But in all honesty i think the real way to go is to just improve the cars handling characteristics and feel. To do that I'd recommend you getting the front and rear F-Sport sway bars, some good coilovers, and an IS-F steering ECU...
Those 3 upgrades should completely transform your car compared to adding slight power gains. And if you really feel the need to think your going faster just add an exhaust

All in all the IS is NOT a mod friendly platform. It is a nice, sophisticated, entry luxury car with enough get up and go to beat a good amount of cars on the road in stock trim. And a car that looks DROP DEAD GORGEOUS with some nice cosmetic upgrades here and there.
Good luck OP with whatever you decide to do and i hope you find the advice you are looking for
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Next a powerful car is a death trap in the wrong hands! If you want to have fun with a car LEARN HOW TO DRIVE! Take a high performance driving class and learn the quickest way around a track. Your first mods should be suspension, brake & then power.
Learn how to balance weight transfer at the limit of traction when rounding your favorite corner of a track. Go through suspension settings and dial in your car. Pick up speed when you gain experience.
Driving a fast car without experience is just taking a chance and rolling the dice with your life/luck. If you respect the power of a high performance car you will live much longer as you will drive the car slower than you do an underpowered vehicle.
If you can't afford track days and want to push the limit of an engine block, by increasing power, for bragging rights you have more money than brains. A 1,000 hp car in the hands of a normal male will be the ultimate **** fest at your local cars and coffee. I would rather be the guy that gives rides in a Miata and scares the crap out of any passenger that gets in.
Those 3 upgrades should completely transform your car compared to adding slight power gains. And if you really feel the need to think your going faster just add an exhaust

Upgrading the front OEM LCA bushings to stiffer bushings will also compliment the IS-F Steering ECU by further improving the steering feel and feedback.
Lighter wheels with stickier tires are a worthwhile upgrade for make a noticeable difference with acceleration, braking, and cornering.
The 2IS is a very capable platform which is why I intend on keeping my car until I run it to the ground!










