I'm wondering why everyone thinks you need all kinds of special PCM tuning to run boost...

If somehow you got the engine to run, and if somehow you used the 2.4 CAN bus PCM to make the VVT functional, then it would be very easy to throw boost at it. You'd just need some larger injectors, change the injector constant in HPT, or even use a piggyback to control them, throw in an adjustable FMU, tune it up and call it a day. It wouldn't be real hard at all, especially with a supercharger because it's belt driven so there's always going to be the same given boost pressure at the same given RPM. You get the injectors to run through redline, the FMU raises fuel pressure per boost pressure, and you're all set. I'm not a huge fan of FMU's, but that would actually be a pretty decent setup. Of course you'd still need to switch to a cable driven throttle body (instead of the drive-by-wire TB setup) so when you press your gas pedal, the throttle actually opens.

The only thing I can see being a problem would be the ignition timing. Due to the high compression of the 2.4, it wouldn't hurt to have a little retard instead of advance on the top end.

The good news: The 2.4 Eco has the bottom end strength of the 2.0L supercharged Eco, as well as piston oil squirters, factory MLS head gasket, CDI coil-on-plug ignition, heavy duty oiling system, and an oil cooler. Basically, with the exception of the high compression pistons, the engine was built to handle some decent power levels with boost.

It would all be a good idea....if you could get the engine itself to run first....

Oh, and the supercharger will fit any of the Ecotec engines...they all have the same bolt pattern on the heads.

Spliner, you brought up exactly one of the things i was thinking. All the new GM cars are CAN bus. You'll have quite an electronics nightmare because there are SO many things in the Alero controlled by Class 2 which is what CAN replaced, and it's not backwards compatible. So, basically the easiest thing to do is scrap the VVT and individual coil on plug.

Exactly. You may be able to swap the block and use the 2.2 head and get the extra displacement but you won't get the full power potential of engine without VVT and CDI ignition.

I persolly would rather just build up the 2.2 Eco and turbocharge it...:thumb:

yes you guys were bringing up the concerns i was having. im not really that electricaly inclined as far as the new systems. it does sound like i could figure something out. so you say the 04 alero has a different pcm than that of the 2.4?? (as far as controlling the rest of the car) there isnt a way of extracting the engine data fromt that would there?? then sort of download it to the 2.2 pcm. what type of differences occur between functions of the car in the 2 pcms??

Well, i can't really give you any hard facts about any of it. I've not looked into the systems of the 2 engines. If you've got the money, and you really wanna do it, and do it right. I would talk with the guys at HP Tuners. I imagine they could be a HUGE help if you were willing to be patient and work with them.