Tomei Manifold, Sports Car and Cobra Exhaust on - HKS Supercharger

[Dasfubarden 0]

A quick post to share the results of my noise testing on this setup. Thought it might be useful for others. I am planning to replace this exhaust with and HKS unit because it’s too loud for any trackday. As shown from the attached photos (taken in an open area with no echo surfaces etc) using home made (regulation length and angle) test stick and a TFA Soundbee, the reading is 115db. The sound test at Snetterton shew (it’s Norfolk) 111db so it looks like mine differs by roughly 4%. Given the limit at Snetterton is 105db, I definitely have a problem and the drive by test isn’t likely to be any better given hitting the rev limiter results in 121db!

So, time for an new exhaust!!

Hope this is useful to someone. 

Cobra sounds great but perhaps you can have too much of a good thing. 

😡