Exhaust advice, how much performance can be gained by a 2.25 exhaust Options

[94CeliGTguy]

Hi, I am new to the site and I have had my 94 gt since january. I enjoy the site a lot. I have searched the forums about this but stilll have a few questions. I have a ebay cai (mostly for the sound as I dont know if it helps performance much), but I want to try something else to improve the cars performance. My celica has 112k miles on it and I cant afford to turbo. I have read about different members exhaust setups and I think I want a 2.25 with resonator and magnaflow muffler. I am graduating at the end of may and will have some cash to spend. Can anyone tell me about the performance to be gained from this exhaust set up or if there is something else i can do to the car that will be a better use of money(possibly ebay headers?). The car is my daily driver so it has to pass emissions. Any advice would be appreciated. thanks

[netrata]

Better low end torque and better top end from then the factory 2" exhaust piping. Reason being is that your allowing the engine to "breath" more easily by reducing back-pressure and having a better flowing exhaust flow due to the the increased pipe diameter. I've been from 2.5" and recently downgraded to 2.25" on my pipe diameter and I noticed that I have more torque on my bottom to mid rpms and haven't sacrificed any high end power since the 2.5" piping. So yeah, I recommend 2.25" to everyone with a 2.0 to 1.6L engine and anything higher than a 2.0 go with 2.5" piping.

This post has been edited by netrata: May 7, 2008 - 2:21 PM