when i rev with my b16, i can see there is no real power with vtec. b16 is in my 95 hb. can it be due to stock headers and stock civic 95 muffler?? i am using a 2 1/4 straight pipe with no cat on it tho. will i feel i big increase in power from jdm itr 4-1 headers?? will the jdm itr header fit a b16 and a gsr??? what will be the best header for a b16 for a very low price??? bang for bucks

 

yes the collecter diff is huge..........you will notice power. but a b16 will only make power up high in the rpm becuase of the displacement......an engine is an airpump the more you can move the better off you are......

 

you should really think about your driving. Where do you drive in the RPM range? if it's the higher end, get a header that will give high end gains, 4-1 is probably best. If you are going to road race and need midrange- 4-2-1 is better. there are lots of options out there, you'll want at least a 2.5" collector. I say go with a custom header.