Originally Posted by fstrnldr

as far as other cars go if we take both GTM and STILLEN out of the equation and just talk about the chargers themselves:

Vortech has put out some impressive numbers, and has some good sized chargers available making bigger horse power numbers possible (if they physically fit in the kits location). They have been around for quite a while, and has even had its own kit for previous generation Z's. The prolem with them, from my point of view, are the multiple issues i have both heard about and seen first hand. This goes as far back as the Honda kits when they first came out years ago to even the "whoops we had a bad batch of bearings" in the 350Z kits. The good thing is that unlike the earlier version the new V3s are no longer using engine oil so if there is a problem then it won't send the bearing shrapnel into the engines oil pan to be picked up and spread into the motor. The bad part is if you take out the bearing the compressor wheel is going to hit the side of the housing. In some cases the IC may save you and catch the big debris from entering the engine. I would also feel more comfortable with a larger oil volume for the charger itself, we all know more oil volume means it will stay cooler for a longer period.

Rotrex is a much newer company, and being from halfway around the world, there just isn't as much info available first hand about them. They are included as factory equipment on supercars like the Koenigsegg which i would assume is good sign, but i don't have the coin to drop on one of those so no first hand knowledge in arena. They are also offered as aftermarket units for everything from Honda's to RUF Porsche's, to Ferrari's, but most of the US vehicles are newer applications. As far as i have seen the design is unique to the Rotrex and of course the HKS copy, so its hard to judge them based on other similar past or present chargers being offered. They do offer a slight challenge in terms of the install since they have their own oiling system, but i think this is going to be a bigger challenge for the designer than the end user/installer. The design is also suppose to offer more boost sooner, creating more usable torque which is what it seems like is one of the big arguments for going with the supercharger over a turbocharger. The other added plus (in my book) is that the design is much quieter. Maybe i'm getting old, but i get very annoyed by the overly loud cars on the street. Now track is a different story, but for daily drivers, or weekend cruising etc, a car with a good subtle tone and good usable power is what i would be looking for.

From my point of view the Rotrex would be a great second choice. My first choice would always be a turbo set up. The Vortech for me wouldn't even be an option. Now if someone can figure out how fit that Lysholm unit that Vortech is now offering under the hood, then i might change up that order a bit.

Just my 2¢