hondacivicnos
Senior Member
Yea whats better 4-2-1 or 4-1?
And I heard that some of 4-1 are for Drag racing use.
But I have a B18C engine and I want 4-1 if it will work better than HEADER 4-2-1
And I heard that some of 4-1 are for Drag racing use.
But I have a B18C engine and I want 4-1 if it will work better than HEADER 4-2-1