Some how my 97 ls doesn't perform as well as the other stock ls.it feels slower and of course the check light is on.it is messing a speed senor and an o2 sensor which i have no idea wat it does to a car...lol.the radiator is kind of mess up too.when i put the car in reverse the reverse light doesnt come on but the transmission works fine.the car has less than 120000 mileage on it.some of people suggested that it might be my distributor cuzz it is making noise...sound like the barrings is mess up.1st gear can redline but it struggles...but the time u hit the end of 3rd gear, it doesnt want to redline.redlines around 6.6 or 6.7 on 3rd gear dont knoe y.for the rest of the gears it just struggles to redline.