QUOTE(xandras @ May 15 2011, 09:47 PM)

which Wei Yip u went? That fella sure dono anything about exhaust. The only thing he knows is welding, sweet talk, and chop ur head off.
RM 170 for that bullet, consider ok lah. Usual price is at RM 160-180. I can understand if they wanna make RM 10 profit from there.
But 4-1 for pick up?? 4-1 systems are usually meant for high-revving race engines. 4-1 gives superb power distribution over high end (more HP), but suffer from low end torque. 4-1 setups are done when the user wants top end power a.K.a top speed. Torque is what u need for acceleration.
U want acceleration, u have to go for tuned length & diameter 4-2-1 manifolds. NOT 4-1.
That 'Pakar Ekzos' said no need take swirling bullet, can take those with filter ones cos japanese cars also using the filtered ones. But 1 question for u my friend; Are u driving a japanese car?

The decision is in ur hands at this point whether u want a normal filtered bullet or swirling one. My advice is, if u dont care bout the metal noise, go for swirling. U wont regret it.

Smart aleck...
I have no comments.

i knw d answer in ur heart
ycchong,i suggets u take hotbits 4-2-1(since it is tuned length & diameter),swirl bullet,midbox then is s flow muffler..then u can gain more on pick up and oso wont lose top speed(xandras car oso tis setup,top speed oso can go 210kmh)..and most important is the sound wont too noisy lo..among three of us(xandras,summerguy and me),my car exhaust sound was most loudest..u can ask zapdos and he will tell u regarding my exhaust sound