Originally Posted by PittsburghZX4ST
I was seriously considering it. Do you think it's worth it since it already has 90,000+ miles on it? I'm just worried it could potentially damage the engine.
I boosted my '07 ST at 107k miles and ran the kit until 137k miles. It now has 163k miles. No issues. 218whp, 216wtq on 8 psi.
You wont need "wires", our Duratecs have Coil Packs and the ignition system is VERY good. I would highly recommend the Autolite 104's though.
Send me a private message, I have some parts you may be interested in