Hey i just installed me apex-i ws2 on my 4dr gsr, and its pretty great. Real quiet and not too flashy. However when i drive in like 2nd gear around 3500 rpms i hear this small rattling noisse, but when i go higher it goes away. What could be the problem? i heard its normal, but iono. thnx

 

ive heard many suggestions about rattles from gsr's. ive heard that it could be the shield on ur cat. or it could be ur exhaust manifold. check all the shields. go over every bolt again.

 

Same thing happened to me. I just install a new high flow cat and the problem went away. Its prolly your cats heat shield.

 

Yes, its the heat shield.

 

im 100% possitive its your heatshield same problem with me take it off car sounds great nice exhaust btw

 

HeatShield 100%

 

Can I hear HEat shield , yeeeeeesssssssss!!!! Rip that ****** off, it drove me nuts, when I did my first exhaust swap(Ahhhh, many moons ago)!

 

I had the same problem when i got my exhaust on ...

 

thanks everyone for the info