Rep Power: 373

as some of you already know i recently installed a hi flow cat header and a cat back, well the cat. converter was banging against the underbody of the car and i took it to have it looked at. well to make a long story short i am still hearing the noise like before and was curious if it would really hurt my car for me to unbolt and remove the heat sheild above the hi- flow cat. converter?

Injen

 
Rep Power: 812

That's to keep the heat in, so removing it most likely won't get it hot enough for the catalyst to work.

 
Rep Power: 323

He is talking about the aluminum heat shield bolted to the body. Removing it will not hurt the body at all. You may notice the floor a bit warmer but not by much.

 
Rep Power: 318

yeah, I removed mine too-- it's clearly away from anything electrical. I also bought some heat resistant insulation to put between the pipe and undercarriage of my Greddy Evo II-- there's a loud vibration under the shifter.

 
Rep Power: 373

thats exactly what i am having problems with... where did you get some insulation from?

Injen

 
Rep Power: 318

local home depot should have something.. just make sure it has a high-temp rating. I bought a 4' x 6' roll, reflective style.