thinking about buying MMW headers and was wondering if anybody ever had any problems with them?

Ive had mine on for about 20k miles and so far so good. I installed my self in 4-5 hours, advice; put sensor elbow on s-pipe before you install pipe, remove radiator fans, be prepared to tighten and loosen the conections to get a good seel and to keep s-pipe from rubbing axle.

Very noticeable power increase, and mostly around 3-4.5 rpm. Their web site claims 26 hp gain w/ just the header and s-pipe, but that is with mmw sr intake, and magnaflow exaust also.


BTW has anyone ever had the header dynoed besides whats on their web site. 26 hp is kinda hard to believe, i thought around 15-20hp sounds more like it.

26 hp is believable because it's a 4-2-1... More backpressure therefore leading to more torque... Plus, i felt the power.. I beat a ton of hondas.. hahaha

i like it jus install couple days ago . . . load and raspy . . . jus waiting on my promotion tuning cat back

26 hp is believable because it's a 4-2-1... More backpressure therefore leading to more torque... Plus, i felt the power.. I beat a ton of hondas.. hahaha

it is not :no:

i'd say the header alone is 13whp +/-

I think 13 hp would be more like it too, maybe 14-15 TQ, or would it be less? Either way you can deff. tell a differance. I have smoked a lot of hondas myself and i cant get enough :rofl:

You do know that the pro mo cat back is a magnaflow. I thought the same thing until i got it out of the box and it says MAGNAFLOW on the can. Even better since i wanted that one in the first place.