[Jodi_the_g]

any idea what JAMSA is, as the blokes at seven valley loved my exguast but it was on the car when I had it so I don't know what it is, and did not like to ask them

 

[DCD]

JASMA stands for the "Japan Automotive Sports Muffler Association." they don't make exhausts....they just certify them

http://www.jasma.org/

 

[Jodi_the_g]

So is it anygood as ratings go.
And are they expensive to get that spec

 

[DCD]

An exhasut gets jasma ratings if it passes certain emission and sound tests. It has nothing to do with performance or design... What make and model exhaust do you have??

 

[Jodi_the_g]

HKS hiper or something like than, not 100% sure does that make sense to you, I know its a full system with manifolds and downpipes

 

[DCD]

HKS hyper is good. Probably the most widely used exhaust on japanese sports cars

 

[SkylineNewbie]

The JASMA stamp is a usually is a pretty good sign you`ve got a good exhaust.

Steve