Hi,
New to posting so hope ive done this right.
Can't find anything about this problem but I am searching on an iphone.
I have the cobra back box and mid pipe fitted. Today i had the stillen y pipe fitted but the exhaust is knocking.
I am abit suspicious of the work quality from my local garage as they fitted the cobra backbox wonky.
Should the cobra back box + mid pipe and stillen y pipe fit with no issues? (Oem cats)
Thanks
Jason