Help, need temp exhaust fix for 103 dB

[Mark 00 RT10]

Were doing an open track event that requires 103 dB or less to run. Our car has headers, no cats, and a borla cat back. I wish there were an insert to put into the tips. Anybody???

 

[LTHL VPR]

Add stock cats (more restrictive than high flows= less noise) first. If still too high, try adding another set of mufflers. You may make it with just the cats.

 

[TorQ Junkie]

Look up Treynor's post regarding the Power Effects mufflers. You can adjust them without raising the car. Downside is, I don't think they don't come in 3 inch.

 

[DanElam]

Actually, the secret that most of the track guys use is just to lift as you go by sound control. In a track event there is no reason to worry about times (I assume this is a school are you are practicing driving the line and gaining control). Even in the races, some of the problem guys lift by sound and get back on it when they are far enough away. They figure the lift isn't worth the cost of changing or the loss in HP from a change in pipes.

If your Viper is stock, I would be stunned if you are actually getting to 103db. Decibel readings have a lot to do with atmospheric conditions, but even John Beazley's loud monster never got much above 95. My race car generally runs around 93-95db and it is always louder than the Viper.

Good luck!

 

[Mark 00 RT10]

Thanks for the help!!

 

[JonB]

Lift / short-shift before the sound station.

103 at 50' is LOUD!! As in hard to stand it

We alse have a device that is truly temporary, inexpensive, and inserted in the system before an event, removed after. LagunaSeca is VERY strict, and this helps meet Laguna regs!