Exhaust Noise Test For Epa

[Cartman]

exactly what im thinking.

He is saying its a stock exhaust, but i suspect otherwise

go have a read of the manuals, it was an option for quite a few stock exhausts on the skylines.

[R31Nismoid]

Yeah, but to get 98dB - its just unfathomable with a factory pipe/dump/cat when my 3.5" full exhaust is quieter by a massive amount

[Cartman]

i'm not disagreeing with you on that, clearly there microphone is f**ked and the test was carried out wrong,

did you look at what the gauge was reading before the test started... as in back ground noise the meter was already picking up from surroundings?

[GUN_METAL_GTR32]

i'm not disagreeing with you on that, clearly there microphone is f**ked and the test was carried out wrong,

did you look at what the gauge was reading before the test started... as in back ground noise the meter was already picking up from surroundings?

new muffler went on last night at a friends factory, went this morning passed the test with an 85/81

making a new exhaust in the next week or so from turbo back gonna be a custom so hopefully we can keep it toa respectable level.

thanks for all the input

[Brandon]

What are you having now (that did 85/81)? Did you just weld another muffler in?

[R31Nismoid]

I still want pics of this 'factory' 98dB exhaust

Because you dont just knock off nearly 10dB with a muffler change... thats virtually unheard of

[GUN_METAL_GTR32]

What are you having now (that did 85/81)? Did you just weld another muffler in?

yep from the flange between the muffler and the cat. its the same diameter piping as the rest of the exhaust but with the baffled muffler on it.

[GUN_METAL_GTR32]

I still want pics of this 'factory' 98dB exhaust

Because you dont just knock off nearly 10dB with a muffler change... thats virtually unheard of

i dont have a camera but ill go to my parents house on the week end a take a photo for u.

[str00th]

im just about to get my exhuast done

can someone confirm the rev it needs to be 91db or under is 5100rpm???

Location is QLD

Car =

1987 Nissan Z31 Fairlady 200zr

fitted with RB26DETT

PM me if you can someone

thanks in advance

[wallas]

man these guys are good at giving people a hard time, feel sorry for u mate.