Oh my aren't we a bunch of help.......so all of you guys that modify your cars for more power only do 100mph? these cars can't perform well out of the box past these speeds? i'm just looking for answers...the car hasn't always done this and used to perform flawlessly in stock form, i'm sure i have high egt's thus the glowing....please be helpful and not just make ridiculous comments...mine came with platinums...and don't give me the someone will get hurt...it's my car, its my body, leave that subject alone...