Tips for lowering dB? (Tomei expreme Ti)

BGTV8

There is a product called a spiral silencer which I use on my race car. I don't have a US reference but you might want to check Spintech Mufflers who are US based. Google should help out

Rusty

If you know what side of car the meter will be on. You can add turn downs that point away from that side. I've seen guys do that.

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Laomatik

Left side coming out of turn 2b onto a straight... I've thought about a turndown to the ground but maybe pointing it away from them will work better?

Laomatik

Is that for a full muffler? I was hoping for something to add to my silencer and be able to take on and off.

BGTV8

These are 15" long "hot-dog" style silencers.

My race car (5-litre V8, 14.2:1 on E85) runs 1.75" primaries into 3" collector into one of these mufflers (3" in and out) each side of the car and that is the ONLY muffler on the car and it is 93 Dba on 30metre drive-by test.

I have a pair of these on each side of my 370Z (one under the seats and the other at the rear) with motorsport cats (100cpi) and it passes the 75Dba drive-by on the track but still sounds "fat".

If you want your car to be "loud" on the street and you are being forced to be "quiet" on the track, the 65 y.o. in me thinks you might be a bit anti-social, but that's just an aside.

Laomatik

It can be loud at some tracks. I was just looking at ways to get to other tracks that have a dB limit. I'm gonna see if some baffles in the silencer and a turn down will be enough