I had a DC 4-2-1 header in my B16 90 CRX, I got it for free and poped it in with a little bit of a dent already. I forget what I hit but I knew it was done for. I just installed my new DC 4-1 Header (with skid plate) that I got for next to nothing. After taking the old header out I realized how much of a piece of **** it is. The runners are so small and dinky. unlike the new one I put in. But the major thing is it the dent runner was from cyls. 1 and 4. Do you think they could have been damaged from that massive block in the exhaust? Also how much power do you think it was holding back? Here are some pics:

 

didnt damage anything. just some flow disruption is those two.

 

thank god for new headers that thing is pretty bad

 

looks like my old ones

 

definately hurting power. My roomate had his DC repaired after a similar dent for around $70 at a local race shop; you will feel the power difference.