1320 header v2 problem
I'm wondering if anyone is having this issue with v2 headers from 1320 performance. I installed it for the first time with berk HFC. I took the front pipe off and reinstall the stock front pipe same result. It makes the whistle sound like v1. Has anybody tried resolving this? I'm wondering if it could be the o2 spacer the cause. I never had this issue with OFH before it was sold a long time ago when I was living stateside.
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