The reason why the dealership is no longer helping you is because you've added a non-standard (and presumably not approved by Toyota) cold air intake and this will almost certainly have clobbered the warranty.
If the power delivery of the engine was not to your liking why did you buy the car in the first place?
To respond to why I purchased the Celica when the low-end torque is so poor and also about warranty: I purchased the Celica because it looks much better than any other car in its price range (and that counts for quite a bit, too). Also, no, my warranty is not voided because I added a cold-air intake. Obviously I checked with the service provider who did it before I had it installed. The car is still under warranty with an added cold-air intake. The point is, though, I shouldn't have had to do that when Toyota could simply improve the performance of the vehicle in this area (it would not be hard for them to do).
The "service provider" isn't affiliated with or approved by Toyota.
If you fit any engine parts to this car that aren't supplied and fitted by a main dealer the warranty will be voided.
End of story.
I had a 1989 Celica until the other day. It had a 2000cc 16 valve motor. The car seemed lacking in torque even when it was new as I was a V8 man before buying it. When new, it got 41 mpg at 55 mph with no stops, so I happily outgrew my need for power. I test drove the new Celica and it, too lacks power and has even less torque at the same rpm than my '89 Celica. The rpm redline on these new Celicas seems more appropriate for an R/C car or even an old slot car, but I would still buy it if I could afford it because it looks terrific and would save me BIG MONEY at the gas pump. Trouble is the sticker price isn't $14K anymore, so I am forced to look at Hyundai cars as a cheap substitute.
This car is way over priced for the type of car it really is. When I was looking for a new car, I test drove one of these. It might look alright, but it is so slow. My bicycle can go faster. This car does 0-60 in about 3 days. Oh and every one I see on the road there is a girl behind the wheel. I have come to the conclusion that it is not a very "manly" car. Toyota made a smart move by discontinuing this car. Its not like they don't sell enough vehicles anyway. I got a Nissan 350Z, and it is so much better than the Celica.
Wow... sounds like a great car. I have to get a look at one up close. I usually don't see them often, but sometimes I do see them in the rear view mirror of my Lancer Evo 8.
I too am having a transmission problem. At first I thought it was low gear oil or an unseated gasket. The first time I took it in they filled the gear oil, which was low, and replaced the gasket, but I am still having problems. The tack will race and the engine will not engage at low-end torque. The transmission is slipping. Has anyone else had this problem? I have a manual 6-speed.