Not sure of the accuracy of the information posted but just here to share.
This is from another forum these guys discussing exhaust muffler relating to Jasma.
read on...
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For those concerned with noise, the type of muffler pan you buy plays a huge part. In Japan they have JASMA, this is the governing body responsible for exhaust systems. The majority of the tuning firms are members and the JASMA plate on the exhaust systems means if conforms to their standards, in terms of noise level, usage, and construction.
NOTE: Why JASMA? The association was formed to keep the Japanese governement from driving tuning companies out of business. By coming together they were able to get governement sactioning for their exhaust products. Meaning during the shaken (Japanese inspection) the car won't be faulted for having an unauthorized part. They also ensure production quality, train/certify exhaust personel, and stop false claims in advertising. Not all exhaust systems are JASMA stamped meaning they are usually circuit systems, however certain circuit systems are JASMA certified.
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For an extractor's case I guess we all are mostly concerned about it's build construction/ material quality...meaning don't crack easily under high tempreture (especially those who wrap the extractor with thermal wrap - as adviced by mechanic dunno true not?)... the best bet for us here to look for one would be something trustworthy....something tested/certified by Jasma.... but the price difference is so just too god damn much!! bleeek!!! I wonder if there's any price difference at all for the same thing/item with and without the JASMA tag in JAPAN?? Malaysia market cut throat like sochai onli...
SIRIM goods are more expensive here in malaysia meh?? hmnnn.....
but i would assume performance, quality, durability is looked at...
