My questions is about my exhaust for a 99 SVT Contour. I have an off-road y-pipe (no cats) and i have had my resonator taken out. I put on Borla mufflers and whenever i go past 3000 RPMs there is a loud import pinging sound. Does anyone else have this problem? and if so how did you fix it? or does anyone have any advice on how to get rid of it?

99 SVT Contour (Silver Frost) Off-Road Y-Pipe (No Cat) Resonator taken off Borla Exhaust K&N Filter 17" Sacchi S3s Eclipse Head Unit 2 12" W3s Kenwood Excelon Amp.