I don't think Wai Heng is reliable At least for me, I'll never return to any of their shops again. They are selling China made mufflers that doesn't last and telling us it's from Taiwan. That's already dishonesty and not only that, the price is not cheap either.

Bro, if you're staying in Ampang then I can recommend you one near the traffic police station. It's very near to LRT Ampang and their mufflers are of better quality, solid and priced cheaper compared to crap WAI HENG products.

You should be thankful and feel lucky that you're one of the satisfied customer.

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.

The thing that leaked was also my center bullet. I could never imagine it could leak only within weeks. Plus even if it's not the center bullet of yours which is having problems, it might be something else and this can potentially mean their workmanship sucks (which I have the same experience).


Thanks bro I've been conned 2 times so I'll make sure I don't fall for the 3rd time. I'm pretty disappointed that after all those trust I've given to this person (product specialist), this is what I get in return.

Actually all exhaust shops are able to help you modify and do recommendations. However some of them are not qualified enough and unable to give you proper advice. For example, the recommendation did by WAI HENG to my ride has caused my top speed to drop to 170km/h (totally unacceptable for a 2.4 litre car). Just be careful and you don't want to screw up your ride Keep the stock mufflers/CAT in case you need to replace it back.

Alternatively you can browse and google around to get some ideas. Also, there's a certain limit you can gain from the exhaust modification. If you're really interested in getting more power, why not consider stuffs like E-Manage, Unichip, lightened crank pulley, etc?

It's actually alright and if you know what you're doing, you can ask them to do according to what you want instead of them recommending. As long as you have the $$$, I'm sure they'll be more than happy to help you out Bigger piping size isn't necessarily better but you can give it a shot. Personally I'll try to stick with stock as much as possible or only a slight increase (I'm on auto transmission).

I'm sorry to hear that bro and looks like both of us got conned badly Their muffler are of cheap quality so it doesn't give enough back pressure to obtain better top speed.

Please be careful while removing the CAT (if you intend to do so). Make sure they take extra precaution as the O2 sensor is very sensitive to air, water, your fingers, etc You don't want to kill it as it's very costly to replace.

If we really believe what he says, we'll be dead. I don't trust him anymore for not honoring what he says and to me it's simple, if you're not honest while doing business, that's the end of it We're talking about customer satisfaction, returning customers and trustworthiness. How can you say something that is made in China be made in Taiwan instead? (that's just one freaking example of lies and I have many more to tell).

I think both our requirements are different. You wanted an exhaust system that'll give you "ganas and bassy" sound the moment you start your engine but I wanted something that is as silent as possible. For "ganas and bassy" setup, I wouldn't know if RM600+ is worth it for your setup because it depends what mufflers/midbox you are using. Many of them would cost cheaper compared to a more silent setup. However despite paying a bomb for my exhaust modification at WAI HENG, the sound output from my exhaust is like a roaring tiger (now that really sucks).

You don't have to go JFA for good exhaust and there are many other capable shops around. The reason why I went to WAI HENG is because I trusted this dishonest chap at the first place which I shouldn't

I went to Setapak and Puchong branch and the Setapak one was horrible. The workmanship and recommendation was totally unacceptable. My mid muffler leaked due to the quality of the part instead of the welding. Nevertheless, it's just a waste of time going to WAI HENG.

I wouldn't bet on WAI HENG anymore. The workmanship and people working there might be ok but their products are NOT OK

I went to 2 WAI HENG's and the first one (Setapak XIN EXHAUST) was totally screwed because their recommendation was totally wrong. The setup was noisy and the car vibrating like mad when you step on the accelerator. The reason is because of the loud humming sound from the mid and rear muffler. After that I changed to a more silent setup in Puchong where I was made to pay RM550. They re-did everything from the front till the rear and the guy also seemed to know what he is doing. However on one fine day, I drove to Cameron Highlands only to know my top speed stays at 170km/h. After that, I went to Genting and came back with a damaged/leaked mid muffler which produces loud humming sound. Not long later, my O2 sensor was broken.

In total, I've spent RM1400+ on WAI HENG but now, I don't use anything from them at all. It's only about 2-3 months and I had everything including piping changed from another shop in Ampang. This new place that I go to have better quality mufflers and are more silent as well.

As I say, what we want is different and mine at 6,500rpm is only some buzzing sound I want a setup that is as silent as possible.

Thanks for sharing shinjite and you have a good point there. The quality of the muffler you've purchased and price you paid for lasted you 2 years but what I got from WAI HENG was totally the opposite.

The sound gets noisier possibly because of the material inside the muffler which absorbs sound was worn off. Well, 2 years plus is pretty good already and even in my previous car, the local made muffler lasted me 2-3 years.

Another XIN Exhaust customer there? Well, I guess we know what it means so another victim of WAI HENG/XIN Exhaust.

If you guys have done it in WAI HENG before then life goes on but for new buyers, my advice is to stay away from them. Kweng might talk like a pro but it isn't necessary true/correct. He told me my first setup would be silent but it sounded like a track car. After that I have to pay extra RM550 to get it fixed.

He also promised me things which he doesn't honour. His concern is only to sell and not to bother about after sales (in my case at least)

I don't like but he has already fixed it so I had to pay. The 2nd time it was alright but I couldn't foresee it would leak so fast and kill my O2 sensor (somehow or rather).

I'm not, can't afford that car for now yet

It looks like you're another victim of WAI HENG The only solution is to get your exhaust re-done somewhere else and don't go back EVER!

These are our Malaysian exhaust shop technique to show customers their mufflers are stainless steel. Well, how many aren't stainless steel anyway (unless we're talking about real cheap ones) It depends on your car and auto transmission normally need some back pressure. The mufflers would also have some fibre in them to reduce sound/vibration. For example the ones from Wai Heng is lousy because the weld of the muffler itself could leak and their fibre doesn't last. After a while you'll notice the sound gets louder.

I have K&N drop in on my car because those paper filter from Honda costs RM120 each It doesn't give a lot of performance difference compared to stock.

Yes, I've tried it before (recommended by WAI HENG and so called "silencer"). Seriously, it's plain bullshit and doesn't reduce the sound. If you want it to be silent then get a proper muffler (with fiber) so that would help to absorb noise.