G2FAST

Just wondering which one would you choose Turbo or Supercharger? Why?

Drag'nGT

Vortech makes the supercharger for the is300 right?

G2FAST

http://www.turbo-kits.com/lexus_turbo_kits.html

http://www.toyomoto.com/is300.htm

http://www.swiftracing.com/turbochargers/lexus/is300/

http://www.pfsupercars.com/mods/lexus/mods_turbokit.htm

http://www.i-m-racing.com/enpe1.html

http://www.powerhouseracing.com/

http://www.prolexperformance.com/nav/fproducts.html

WHATS YOUR CHOICE?

<<--YK-->>

This is purley due to personal opinion....i didn't read the facts or any of that...but it was my general impression that a turbo can make the same type of power (maybe slightly less, maybe more depending on the setup) as a supercharger; however a turbo, as we all know, is propelled by a turbine in the exhaust stream spinning another turbine which pressurizes the air going into the car's intake; wheras, the supercharger is basically a belt driven accessory that performs the same function. So i think the supercharger puts more of a load on the engine than the turbo, which uses exhaust gases that are being expelled anyway....However, i think a supercharger can also make instant boost, where a turbo might have lag, if you have a single large turbo doing all the work. Twin turbos help overcome this by having a smaller turbo to spool up faster and then a larger turbo to give better boost.....or something.....I just had a long day of school which ended in a Law class debate so if i think i know everything, its only cuz i'm still cocky from the debate

cheers.
YK

PS: I like turbos

calteg

YK is right for the most part, but off on a few things:
1) Turbochargers have the potential to make MUCH more HP than a supercharger.
2) The tradeoff is that increased hp (from a larger turbo) also means more lag while the turbo is spooled by said exhaust gases. Doesn't sound like a big deal, but keep in mind a few things: A turbo that doesn't spool until mid-range ~4000 RPM, give or take, can be VERY dangerous if your 215 hp car suddenly turns into a 400hp car in mid-turn. This accounts for many of the WRX's and MR2s that you see wrapped around trees. Also, if you're looking for a pure quarter-mile car, a turbo is the way to go, but it won't improve your 60ft times because the turbo won't have spooled by then.
3) Superchargers offer less power (effective boost range typically 9-15 psi, to a large turbo's 30+) but it is far more linear; meaning more power throughout the RPM range and a much better launch. Like YK said, it puts a larger load on the engine and runs MUCH hotter. Cooling is definately an issue to consider because, as we all know, heat is our engines worst enemy.
4) On the subject of twin turbos, in most setups, both turbos are the same "size", and unless you're running a v12, they are both typically small (pumping out ~6psi or so). Keep in mind that TUNING is the key word with any form of FI, and trying to optimize any vehicle to accomidate both a tiny turbo and a huge turbo is very difficult and very costly.

Anyway, thats all for this novel, hope I anwsered a few of your questions.