ok i've decided to get the es muffler with 2.5 piping for my b18 ek my question if should i keep the stock cat or replace it with a magnaflow cat or just remove it what would be better performance whise and which would help it sound low pitch no ricer

 

high flow

 

depends on your states laws and emissions
stock cats really don't rob that much hp
and if u remove it its much louder
i say leave it alone and focus on something more important

 

thats what i was thinking

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by s2k4life2861 &raquo;</TD></TR><TR><TD CLASS="quote">thats what i was thinking </TD></TR></TABLE> ?????? what

 

I would get the high flow cat. The cat has to do nothing with the sound on ur muffler. The muffler does that. But, anyways get the high flow cat so the cop doesnt give u a State Ref ticket and go through the whole bullshit.