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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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.
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
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.
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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got ya. what is the legal db for sri-t?
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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boosted_astra has a spare stock exhaust system. send him a pm and see if he will sell or lend it out.
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?