[sammyg2]

You can't turbo a 914! :-)

Lesse, bolt on HP......
Split fire spark plugs, thats got to be good for at least 20%,
K&N air filter, another 10%,
E-ram, another 5%,
Tornado air cleaner insert, 10%,
Pro-lube, 5%,
how am I doin so far?

Seriously, there is nothing "bolt on" about a turbo on these cars. Lots of work. Who ever said doing a tune up was right on. Just make sure your throttle body is opening all the way. Sometimes they don't, and that robs hp.

Mark sold my old turbo car, and the new owner sold the engine complete with the turbo so hopefully it will show up again.

Several different companies used to sell turbo kits for 914s. I spoke to the owner of one of those companies, he told he he got a thousand phone calls, but only sold a few of them.
I wish the kits were still around.
I see one for sale once in a while, maybe I should snag one, but I am cheap and will probably make another instead of buying one.
The biggest lesson I learned from doing that turbo project? Keep it as simple as possible. That approach lowers how much boost you can make, but is also less stressful. :-)
Jeff took another approach, going big. His car is going to be killer fast when he gets done.