which one is a better investment?
 

Would I be better off ordering an aftermarket mass-air meter or a throttle body? Which one of these is a bigger bottleneck in the intake?

A new T/B would be just about worthless...

You may see an improvement with a new MAF.

I would recommend a custom-programmed Pro-M...

You can go to www.pro-flow.com for more info....

Would you recommend me getting the bulk of my mods before I get a Pro-M so they could program it to all my mods? Or does one program basically suit all configurations? thanks

You can get it programmed for what you have now, and have it reprogrammed later if any major changes occur in your setup.

The advantage of a Pro-M unit is there is really no "one size fits all" program. They set it up for what you have from injector size down to how your induction is routed. Its pretty cool...

If I remember correctly, it costs about 100 dollars every time you have it reprogrammed at their facility....

Sounds good, thanks for the help.