I did research on both and some of u e-mailed me about difference and pros and cons for both..but I still can't decide which one to buy...
there is a price difference b/w those two, race pipe is the way cheaper...
still can't make up my mind...help me out plz!

 

if you care about the environment then get a high flow pipe; if not the regular race pipe will do;

 

Are you willing to pay $125 for a straight pipe? Thats basically what it is. Remove your 3rd cat, insert straight pipe.

 

More like you should care about the environment and the 3rd cat is the "smart" way to go. If not I have some good video's for you to check out about the Sea-Ice at the north pole that will be long gone by the year 2050. Not trying to scare people but environmental concerns should be taken VERY seriously as we all will be affected. A measly 1-2hp for reducing pollution should be a no brainer if you ask me.

 

Well I am currently running catless... I may either insert a highflow 3rd cat or an exhaust cutout.. Leaning towards a cutout since it gains 10HP top end ...

 

Amen.

 

go for the race pipe,you have two other cats to keep the emissions in check.2 horsepower is better than no hp. besides this is the best choice for a freeflowing exhaust{no bottle-necking} amen.