Not Ranked
G'day MARTROGERS,
Here's a yarn...I got a professional exhaust man to supply me with the appropriate mufflers. I had to tell him several times that it had to pass the stationary noise test that he actually had to do himself. He kept telling me that "these will make it sound good !" I finally got into his head that these mufflers were temporary...remember you built two 3 foot long hot-dog side pipes for me, they will be loud. So he sold me some really quiet mufflers....I built the temporary system and took it up for the stationary test and it failed. So he sold me two more mufflers and said...Don't drive it hard as the excessive back pressure will cause engine damage. The car at that time was untuned & on gas, so was a little hard to start. When the extra back pressure was added the thing wouldn't start. I had to attach a vacuum cleaner to the tail pipe to cold start it ....NO bull****... It passed the stationary test...just ! Then the RTA demanded a drive by test by another tester. At this stage the car was silent except for a loud whistle / gas noise. The drive by test in second gear at 2000 rpm was fine one way but too loud the other (exhaust exit was on one side ) I convinced the tester to take averages of the two results add them together and average them...I passed. Pay the man $200 and shake his hand. He told me later he worked for the RTA and used to pass custom harleys ! ?? Later I found that my 2" system should have been enlarged AFTER the mufflers to make a deeper sound which registers lower on the noise tester. My high pitched exhaust "whistle" freaked the machine out.
Smithy
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