nshanny

Hi there,

I am looking into purchasing the fabspeed muffler bypass pipes for my 997S, and I am wondering if anyone has a Db rating for them? Fabspeed does not. I love the sound emitted, but I am worried that I will not be able to attend DE events with them since there are Db limits. (89 Db for LRP and 99 for NHIS).

Cheers
Nick Shanny

JFScheck

Are they enforcing those rules too?

tagheuer

114 db at wot with only bypass. 115 db with headers and bypass. 120db ++ with headers, cat bypass and headers. This is at wot and at the tips.

The best setup I like is with headers, cat bypass, stock or aftermaker exhaust with v-flow and flash. It's a little louder than stock when driving conservatively but screams at wot...not low growl sound but more mechanical. It's hard to describe but I like it

997driver

hey tag, do you ever got to crystal coves on saturday, i would love to hear those pipes..

997driver

california law is 95dB so hopefully I can get away with running these on my car around here.

tagheuer

I've never been there for the Saturday meets, but I've always wanted to go just to check it out. As a matter of fact, I was thinking of going this Saturday but won't know until that morning since I usually catch up from my sleep deprivation during week.

I've had my car dyno'd with each of those setups and I've had pretty good gains with each progression. I think you can do a search to find my graphs. I still need to dyno with my current setup and take care of the CEL. I got that too.

TT Surgeon

LRP, 89db limit, you will be black flagged .