twin loop muffler suit for auto car or not?how about the performance wise and sound?is it will be very noisy?my car is persona auto..setup is 4-2-1,bullet,midbox and s flow muffler..plan try use twin loop muffler instead of s flow muffler

i'm one of those getting rid of the twin loop....now using everco s flow,it's even better...

Actually bro shinjite is an expert when it comes to cars He will be able to give a better answer. 1.6" is really good enough because even on my old Accord 2.4 K24A, the piping is around 1.7" if I'm not mistaken.

For 4G18, best is to go 1.8" as well with the bullet~~

Even my modded 4G92P using back 1.8" piping

Yes boss, 2" is really a bit too big for that engine I suggest you stay away from Wai Heng, Xin Exhaust or any of their affiliates - all of them are UTTER CRAP!

Finally.     

Same goes for midbox right?  So, seems like i got few shop in mind to finish up my exhaust mods. As i'll just maintain my current piping, then i'll just my parts separately, depends on my needs. Powerzone/hotbits 421 extractor, 2" inlet/outlet matola/everco straight bullet, and probably 2" inlet/outlet magnaflow s-flow muffler. I think it should be fine if i grind and weld it myself isn't it? 

Xie xie Sifus.

How's your exhaust now? Have you changed?

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Added on April 9, 2012, 10:51 am

Bro, I don't think there is a local aftermarket performance exhaust with reasonable price available for your engine....
Probably you can try kweng84's exhaust shop?

Maybe even Marco should be able to cater to your needs

I'm more to low end.

But my extractor would cost too much if it is custom made for 4-1.

Current plan is extractor 4-2-1, muffler (straight flow) and midbox.

Pls do recommend.