i always thought the GTO sounded bad *** as it was. loss of torque would **** if it was noticeable, but i cant help on if its true or not. i could see a loss in back pressure hurting you though.
member on ls1gto forum and have read every topic on it...just wanted to see what you guys thought...my buddy whose really into cars said that the loss of low end is just a myth due to an increase in a little power up top due to better flow...
yeah my friend said it would be a loss of maybe 5 tq...which to someone such as myself, or maybe to most people, would not be noticeable in a daily driver