Hey everyone, Im not new to the car game but I am defiently new to GTP's in general and I joined this site to learn about the smart way of modifying these things, typical problems and so on.. I am very impressed with it so far, I've had about a month so far, 2001 red GTP with 142,000 on it.
I have generally been a v-8 guy in terms of preference, I have a 2003 cobra with typical bolt on stuff, and a Fox body mustang that is a street/strip heavy nitrous car I built from the ground up and I could talk forever about these but probably no one cares...
Now I use this GTP to drive to work and back everyday, 120+ mile round trip so mileage is a conern as well.. Its runs well right now, I noticed the car seems to run very cool and leaks a small amount of coolant "intake" so I plan replacing the thermostat and lower intake gaskets, figured while Im in there I might as well put some headers on it, straight pipe from there to catback "no resonator or cat" put a 3.4 or 3.3 pulley along with my own intake kit. I have been debating doing some blower porting while Im inside.
Anyway what I need to know is, do I really need a aftermarket ECU with these mods?
and is there enough risk to justify a scan tool for KR?
has experience shown to effect mileage much with these mods??
Thanks, Scott K