A) borrow someone else's exhaust for the day
B) get yours modified with a baffle plate in one of the joins and remove it after
C) if you want to pass and keep your exhaust legal, get another/better resonator
So! 2.5" exhuast is no good apparently. EPA want me to do a noise test on the sri-t. What do i do ? What are my options to pass the test.
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A) borrow someone else's exhaust for the day
B) get yours modified with a baffle plate in one of the joins and remove it after
C) if you want to pass and keep your exhaust legal, get another/better resonator
Last edited by sooty; 13th April 2011 at 05:20 PM.
put the old I(stock) exhaust back on for the test, then install a "hotdog" to the exhaust to quieten it when you put it back on.
'91Alfa Romeo 164Q
'02 Jaguar S-Type 3.0 ~ '98 BMW 740il ~ '02 Saab 9-5 aero ~ '99 Saab 9-3 Viggen Convertible ~'00 Alfa Romeo 166 3.0 ~ '97 Volvo S40 T4 ~ '94 Saab 900s 2.5 ~ '98 Opel Vectra 2.0
It's not the diameter it's the mufflers.
You can get a 3" past EPA noise with the right noise suppression.
Two options:
1) fit another muffler or replace one you have with a larger/better/less straight through one
2) fit a sound baffle in one of the flange joins (which is literally a metal sheet with holes in it). This will drop sound a lot and is then removable after testing.
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Epsilon Renntech
2003 Astra SRi-T - The Phantom
EMTRON ECU
Borg Warner EFR7163 & EFR9180
Tuned by Scott @ Insight Motorsports
got ya. what is the legal db for sri-t?
04 Astra Sri - Silver - Full red leather interior - mk4 888 wheels - Star light roof lining - lowered - ice - exhaust - vxr brakes - quite a few other things.
my ride - no longer faster than qlds sri-t's
OEM+
04 Astra Linea Rossa - Build thread
Use a baffle plate and you can make 1 for $20 with a plate, a drill and a 6-10mm drill bit.
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Last edited by gman; 13th April 2011 at 05:36 PM.
Epsilon Renntech
2003 Astra SRi-T - The Phantom
EMTRON ECU
Borg Warner EFR7163 & EFR9180
Tuned by Scott @ Insight Motorsports
boosted_astra has a spare stock exhaust system. send him a pm and see if he will sell or lend it out.
Last edited by guy 27; 13th April 2011 at 05:33 PM.
04 Astra Sri - Silver - Full red leather interior - mk4 888 wheels - Star light roof lining - lowered - ice - exhaust - vxr brakes - quite a few other things.
my ride - no longer faster than qlds sri-t's
OEM+
04 Astra Linea Rossa - Build thread
If I get a better muffler etc, will this effect my bhp? What I'm after is a solution that:
1. Meets EPA standards
2. Keeps, or at least comes close to the exhuast I have.
Will a baffle plate effect the speed of my car? or just silence it a bit?
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