oem header make power over a good 4-1 header? :eh:
crush bent exhaust piping? shouldve saved the money and kept the stock one... both will perform the same since both are crush bent.

if youre serious about drag racing, u will want to keep that 4-1 header. lose torque? pshhh. f*ck torque, itll come on its time when we modify the engine for performance. we have 4bangers. a lot of people had told me to get a 4-2-1 header and that with a 4-1 header ill lose the oomph when driving on the streets.. BS. i put on a one piece 4-1 header and i had no problems or lag from driving on the streets.