I go by that here, too.
Thanks for the props, but I'm not all that.
I will answer what I can, though. The SPI is a capable engine that can handle 5-7 psi easily. The ECU can also handle the new parameters for fuel, and the variable speed fuel pump in the SPI can handle the extra juice needed to cover the larger injectors. The stock internals will do fine to avout 170hp, but if you're intentions are greater, you need new pistons. No-one currently makes SPI pistons (as far as i know), but there are companies that will make a set special for you for about $450. The Escort RS in England is your best bet for bolt-on turbo parts. The manifold is a bolt on, and the charge pipe is the trick if you don't go intercooled. For 5-7 psi you don't need to intercool, but for much more than that it is a good idea. The 2.3 oil cooler bolts right to our filter threads, and the filter screws to that. You'll need to plumb water lines to the turbo, oil cooler, and back. You'll also need to plumb oil lines from the oil pressure sensor to the turbo and then back into the oil pan. I removed my oil sensor on the back of the block next to the oil filter, screwed in a nipple, then a tee, then the sensor and an oil pressure gauge into the tee.
For fuel, our pump is fine, unless you intend on 200HP +. The fuel rail is fine, but the injectors will have to go. Currently I have ZETEC injectors and wiring, but even those are way too small to prevent detonation (BAD!) Most guys I know run 42# injectors, a stock MAF (but recalibrated), a chip, and go to a fella named Lidio in Detroit. He's tha absolute best when it comes to turbo tuning. If Saleen sends him rolling chasis to build monster engines for, he's surely good enough for me! He has an 11 second F350 Super Cab dually Power Stroke if that tells you anything. The 5v cutout on the MAF is where we need to have work done. That's why we need a chip and tuning. Without those, your car will be a mess.
I'm running -40* Below coolant additive just to make sure everythings "cool", and Mobil 1 just for the fun of it.
For the exhaust side, anything over 2.5" is overkill. I know a few ZETEC turbo guys who run the Magnaflow 2.25" with no problems whatsoever. They hit 14+psi on stock internals. A header can be converted using a turbo flange, or you can go the RS route.
Head work is not necessary, but every little bit helps. I just had mine done and it runs about $300-400 for a full race P&P. I also have ARP head studs, a good idea if you intend on pulling the head more than once while you own it. I just wish I had the time ti install it! Damn snow!!
A good cam would do you justice, even if you decide not to go FI. I have the Escort/Focus setup. While pricey ($470), it has made a nice difference in the engine. Their setup consists of cam, double valve springs and retainers, and new stem seals. It pulls to 7k and acts like it could go higher. My chips rev limiter is at 7k.
Keep this in mind: If you have an automatic tranny, forget it. The tranny is rated at 135 lb/ft. It can't handle the extra horses and torque from a turbo. Level 10 makes a tranny, but it's somewhere around $3500.
OK.........BREATHE.........
Fell free to PM me or pop on over to FJ and chat with the guys who are also well on their way or have already gone turbo with their Escorts.
Jim