That chart is somewhat meaningless without data on measurement weighting, range from the pipe, angle from the pipe, humidity, temperature, etc.
It's only value is in comparisons as long as the these variables are consistent.

 

That's what we want it for. Sound level and flow through is probably the most important to every one. No one likes the drowning sound on the highway and no one wants noise tickets. The least backpressure is a concern and fit and finish. Without at least "somewhat" of a comparison, you are buying them blind. Everyones taste is subjective, just like their taste in woman. So would you just take someone else's personal oppinion without knowing their taste?

 

Hey guys,. I'm new on here. I bought my 7 with the Racing Beat exhaust on it, and it's pretty quiet( I know, it's pretty old school). Sometimes I like that it's quiet, and sometimes I want something more aggressive. I'm undecided.

 

do they make "pills" for all exhuast becuase I have a blitz nur-spec with dp, mp and it really sounds like ****.. before I had just mp and cb it sounded awsome...
I take it back ,,i doesnt sound like **** but its to loud !!! all it does is draw attention from cops..
P.S stay away from the apex-i

 

I haven't heard of anyone making pills. Maybe a silencer. The Apex-i comes with a silencer. You lose a lot of power when You use one though. I like aggresive sounding cars but, the Apex-i is too loud for me on the highway.
I never used to think that much about it, but now choosing an exhaust is stressfull. I want more than the Racing Beat has, but less than the Apex-i. Greddy maybe.

 

As an acoustical engineer, I'm curious as to how these measurements were made. How far was the meter from the exhaust? Are these unweighted results or A-weighted? Just trying to get a feel for the results. Also, with all those systems, why no stock results?

 

"restrictor plate"

 

Do you have a downpipe or midpipe yet? Once you throw both those on you'll probably be satisfied.