well to get a scan gauge...no tuner....It will run you about 250.00...tuner and scan gauge will be about 500.00....I'd go with HPTuners....There the only ones around that are really up and running....DHP does not make there's anymore although there still floating around.
If you're going to be doing any kind of mods to your car and are seriouse about making a decent amount of power i'd go with a tune over a pcm anyday....
Look at it this way.....if you're modding....
You need a pcm (aftermarket) 200 for a decent one
You need a scan gauge.....250
Why not just get a tuner that way if you change anything....you can change your tune for no additional cost.And it's only like 50-75 bucks more...and it has a scanner thats way better than the gauge (mostly becuase of how you can veiw it on the laptop vs the gauge) PLUS when you get good...you can charge people 100 bucks to cover your credits and make 75 percent of your money back...that way yout tuner wil barley cost you anything.