Celica Forums General Discussion Exterior New Fireball exhaust makes my car slower?

I recently installed a fireball exhaust on my 2000 celica GT. It made my car slower. Does that make any sense? I thought it would give me a few more HP but instead it feels a lot slower than stock. my car is an automatic unfortunately

It may just be in your head. I'm not sure how much HP the 5zigen is supposed to add. The only way to tell is to get it dynoed.

[ 07-31-2002, 11:14 AM: Message edited by: Steven ]

I got 5Zigen Fireball on my GT (auto) at first when i installed it, it felt that the car was slower, but now after like 4 months with it on it sounds good as hell, and it feels like the car pickes up a bit faster...just give the ECU to adjust to the exhaust, ill be fine
check out the gallery [photos.yahoo.com]

same with my injen intake, just wait a while for the ecu to adjust

Thanks guys! I guess I'll just have to wait it out!

something to think aboot would be reseting ur ecu, just "unplug" the ground to ur battery and leave that way for a couple of min, it may help, when i got my intake it didnt seem to do much till i reset the ecu, so its just an idea, doesnt hurt to do it