Cheap Engine Data Acquisition

I want to read inputs from a bunch of extra sensors on my engine. I want to be able to read the sensor outputs while driving, and I want to be able to log the info for later analysis.

Here's what I think would be the ideal setup: I would like to use whatever sensors I want (junkyard ones like the GM #25036751 IAT sensor) and have some box to plug the lead(s) into. The box would connect to a computer and have a software interface. I could tell the software what the input is (air temp, air press, EGT, whatever) and give it the calibration info (like .3V = 5psi, etc). It will then display the data in real time (like the TunerStudioMS Gauge Cluster) and log the info in a .txt file or something.

And what I'm looking for right now specifically is the ability to read in data from (3) air temp sensors and (3) air press. sensors (one of each before the turbo, between turbo and I/C, and after I/C).

I'm basically looking for something to display and log sensor inputs similar to how MegaSquirt/TunerStudioMS does (I'm using MS1 V3). Does some program like this exist? Has anyone done this kind of cheap-o data aquisition before?

Thanks a lot.

Switch to MS2/3 and buy an IOx.

In reply to Paul_VR6:

Yep, your choices are MS3 upgrade(with the MS3x), or the race capture pro http://www.autosportlabs.com/racecapturepro-p-74.html

Thanks a lot for the replies. This is for a Challenge car, so I can't really afford MS2 or 3.

That RaceCapture system looks similar to what I'm looking for, but it's expensive. I don't need accelerometers or outputs, so is there a cheaper system somewhere without that stuff?

And could someone elaborate on the IOx thing? link? I couldn't find anything on Google except for some pharmacology DataAq. Is that it? lol

How is 300 bucks expensive? Race capture pro was pretty much designed for lemons teams. Their forums has tons of info on where to find cheap sensors for all kinds of stuff

It's $400, and I'm on a college student's budget. It's really not expensive for what it is, but since I'm not going to use some of its more-expensive features, that's a lot to pay. It does seem like a great system overall.