Hey guys, I don't have a Celica (but my friend does) I actually have a 96 Eagle Talon, but I am known to read all the different message boards. DO NOT BUY THE VENOM 400!!! It is a waste of money! It gives you NO additional power at full throttle, ever wonder why? All this piece of junk does, is tell your car that you are stepping harder on the pedal than you really are, so basically, you can achieve these results for free, just step harder on the pedal! It is ridiculous how much money they are making off this crap! Another one is the "timing advance kit" you might see on ebay, which just tells your car your sucking in colder air than you really are, problem is, your car has fuzzy logic, (artificial intelligence basically), so after a couple of weeks, it will figure out what is happening, and your car will be back to normal! Hope this helps guys, save your money! I hate to see $300 get wasted that could buy you some real mods!!!!