Postby burfadel » Sun Dec 24, 2017 2:44 pm
It's target is noise, but without experience can't comment on volume with load etc. I have a mid size straight through muffler currently and it's a little loud around town, but a decent resonator helped a lot. On the highway I cannot hear it over the road noise, I'll have to see if Nilrust has an installer in SA for when I get back to Adelaide. I won't be able to get that done in Port Lincoln no doubt, especially before 6 Jan or so when I travel back! There are sections of the road between here and Adelaide that are atrociously noisy and others where it isn't so bad. Also might try different tyre pressure etc. Reason why it's relevant is it comes back to noise of exhaust and your tolerance. Unwanted road and exhaust most can increase fatigue, stress, and irritability. Raising the stereo won't help, and external noise can cancel audio fidelity.
Exhaust shops can give bad advice, they think everyone wants noise. Probably the simplest thing you can do is a decent triflow/triple flow/turbo muffler (they're the same thing, but also might be labelled triflo etc), resonator upgrade (stainless straight through with stainless packing), and 200 cell metal with exhaust extension bung on the second O2 sensor. This should give you more power right across the rev range, and not lose the bottom end like you will with a too large of an exhaust. Any money left over can then go towards extractors. They seem to be tuned for the 4B12 engines, and the existing 4B12 manifold seems tuned for the 4B11 which don't use them.
I might add a pic of my car once I style the exterior a bit
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