please describe the experience more in detail~~

As I say, their mufflers and products are cheapskate from China (so called Taiwanese made). I had the same problem and my muffler leaked just after few weeks of usage and I can't be bothered to return for the 3rd time. They also killed my O2 sensor and I have to replace it for RM1000+ Their representative seller over here is also very irresponsible, saying and promising things but end up never doing.

I suggest you to find another shop to resolve the problem or if you think it's worth to give WAI HENG another chance then return and get it rectified. If they ask you to pay more to get this and that changed, you might as well forget it. Trust me that WAI HENG is a very terrible exhaust shop to go.

any recommended drop in air filter? not so exp one

Thanks for the info, luckily i havent install yet.

and squareballs, may i know the jian hang location? i want to hunt for a better muffler.

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Added on March 13, 2009, 7:01 pmno one ?   

yea, well...not important now
so does anyone know any decent shops that can fit exhaust around PJ?

hi squareballs, got contact of jian Hang? or address.

came back from jian hang ~_~

mid part mod abit, added spoon and midbox.  Totaly plug and weld 3 times, let me test each time. Thing added 1 by 1.

my gen2 now more responsive d.

any campro wanna try long 421 ? xD

My hotbits 4-2-1 long enough? @_@

or do you mean extra long, according "jian hang" someone did add 6 inches longer...