Ok, I put in the new PCM, headers, intake, and thats about it so far, but I took it for a spin, to test out the new top speed anyways, the first run i had no problems. on the way back though, around 110, the low trac light came on, and the brakes started acting up....I'm guessing thats not normal :? Any clues? I have none.

No errors on your dic or ses light?
Could be the start of a bad wheel speed sensor?
They are embedded in the wheel bearings, fyi.

OH ROGUE!!! WHERE ARE YOU??????

My initial thought is that the stabilitrak system (which is guided by the wheel speed sensors as well a yaw sensor) acted up. Not a fun thing to have happen at 110 mph. You probably will NOT have an SES light as the trans and traction codes are stored but do not cause the light to illuminate. If it continues to happen you may want to disconnect 1 wheel speed sensor (or both the front ones) until you can have the car scanned to see which sensor caused the problem.

the SES light is on, but I think thats because I haven't hooked up the o2 simulator yet.i'll try that later today

ok, an update. i unhooked the WSS, my ABS light, brake light, and trac off light came on. i noticed no improvement. it only does it above about a quarter throttle. then it stutters, feels kinda like its starved of fuel, but under quarter throttle it accelerates fine. i drove to town, maybe 45 miles with it unhooked, then hooked them back up, and it seemed to be working a little better. and while under heavy acceleration, the SES light flashes, dosen't stay on, just flashes. I'm confused. maybe my fuel filter? it accelerated fine before the mods....

also i was looking at scanners to maybe see if i could find the problem, are the EZ scans at schucks pretty good?

A flashing light indicates an emissions problem. Not PCM mechanical. I suspect a simple rear O2 sensor due to your SLP cat.

I'm not familiar with those scanners. But you really want a full blown scantool, not just a code-reader. Autozone will pull codes for free.

A flashing SES light usually indicates misfire. Check your plugs, wires, see if your cat is glowing red underneath (clogged cat).

FIXED IT!!! It was the plugs....