More likely it ISN'T time to turbo, but I'll get to that after.
i've just bought my 1994 mazda mx3. its the 1.8 v6 24 valve. now i have been everywhere on the internet trying and trying to find a turbo or turbo kit to go on my car. with no success i decided to ask you kind people at mx3.com. because i figure a website all about mx3 should know where to find a turbo for this car.
Well, turboing a K8 itself is complicated, but i'll get to that in a bit.
First, no, there is no turbo kit for a V6 Mx-3. There was one, but the fabricating company was slow and unreliable and it took over a year for everyone to get their stuff and hurt Oscar @ PakfeiferTuning.com's reputation because he decided to take responsibility of distributing the kits, and that was the only attempt at an Mx-3 kit.
The next option is to modify the kits for the Probe/Mx-6 KL, it's what is most common I believe.
You may not believe this, but there are only a handful of turbo K8 (K8 refering to the 1.8L V6 of the Mx-3) owners. For the most part, it's not worth it.
K8's aren't really turbo happy motors. In the end, you'll make about 200hp at most. If you aren't aware of it, there motor swaps available for your Mx-3. One of them is known at the KLZE, a 2.5L V6 from Japan that makes 198hp and 165ft-lbs of torque, and it drops in like stock. A turbo K8 might make more power than a KLZE, but if it does, not much. As well, turbo cars are typically less reliable and requires some tuning and work to get to run right. a KL swap, you pop it in, use the matching computer to the motor to get a the proper power output and fuel economy and your good to go. Typically you'll get better fuel milleage with a KL than with your stock K8. If you turbo a K8, you'll definitely be using more fuel, so I can only see fuel economy going down.
A swap will be cheaper too. Turbo or KL swap, you'll need a new upgraded clutch to handle the power anyway and you'll either need a new ECU for a swap or get some sort of fuel-management for the turbo setup. But you can get a KLZE for under $1000, a turbo kit usually runs for over $1500 (for a good kit, you can save money by getting an eBay special)
In the end, a KLZE swap will be easier and more reliable than a turbo K8 and should give you better gas milleage than your K8 did. I'd look into that first unless your really hard set on getting a turbo. Most people swap to a KLDE or a KLZE, than turbo it from there, but you could always turbo the K8 and when you blow it, swap to a KL after.