No not any, and of course there are some very nice dsm's built in the backyard/garage/carport, but there are 15000000000000000000x as many that are fucking hack jobs from hell. you wanna try and argue the fact that these cars aren't fucked up 75% of the time, go for it, but my 91 tsi, my buddies 96 gst, another buddies 98 gsx, yet another 96 gsx and several other talons and eclipse's that i've had the misfortune of wrenching on, all had some dumb shit previous owner that had no clue wtf they were doing, just threw parts on and generally fucked the cars up beyond belief. Add to the fact weak ass drivelines at any thing above 25% stock power ratings, the fact that they are all at least 10 years old, and yea, its a fucking roll of the dice when it comes to finding a good one, and it's not real good odds in your favor.
That said, on the 93's you cant really tune them. i don't know why exactly, but it has something to do with the computers. they are a speed density design, where as in 94+ they went to maf design, and the computers were able to be flashed/chipped.