Cutting out cats vs. High flow cat

[bigapple]

jesus this post was dug up from 4 years ago haha... my 2 cents tho, removing the cats will def improve airflow but u r sacrificing plenty of low end torque... if u do a straight pipe and the pipe is pretty large then ur probably not helping ur engine at all and making it wear and tear faster... if u dont have the performance parts for this thing to handle a straight pipe then its probably doing more harm than good... hi flow cats will give u the low end back and still give u plenty of torque on the high end because u dont have the crappy stock muffler in there