so i put on the weapon r header. i already have a greddy ti-c. and it sounds like a fart can now, is it suppose to or did i do something wrong. like it has that greddy sound from before i put the header but with a high pitched thing. im thinkin i didnt tighten something all the way. any ideas?

it is faster

 

what car/engine do you have?

I had an 97 LX with the D16Y7 (non Vtec engine) and putting the header on meant i got rid of the stock catalytic converter. this will create some raspiness and buzzing. headers wil do that anyway as the sound wavesstraight from the combustion chambers and all the crazy frequencies of what goes on in there are alot more audible.

I'm soon to be putting on a high flow cat and a resonator to help quiet down the car a little bit. you might have to do the same.

 

so all i should need is a cat?

 

it dpends on what car you have ^ does your stock exhaust manifold have the cat in it? Is there a big bulge in it? If so, then you removed the cat when you installed the header. Installing a new cat or high-flow cat somewhere in the exhaust piping should quiet it down a bit. If you have the header bolted onto the cat itself (like the d16y8), then your raspiness is unknown to me; usually a header doesn't change the exhaust tone too much, and usually not for the worse with the name brand like Weapon

 

oh

 

ya, the cat is on the stock header. so what your saying is if i get a cat welded on some where then that buzzy noise will go away and it will have that greddy sound but louder? and its an 07 civic ex

 

sounds like an exhaust leak to me... you might need a new manifold gasket from the dealership. You could even invest in some APR head studs for that perfect seal.

 

if i took it to a muffler shop or something could they fix that

 

so i was looking at the header and the downpipe and i saw that the round gasket thing that goes between the header and downpipe has a big chip on some of the edge and it doesnt really fit perfectly, could that be the problem?

 

where could i buy an exaust donut