z00york145

hey guys,

i was looking around where to get a y-pipe, decided to see what ebay had to offer. Found this deal for headers and y-pipe for $179.99, I know ebay parts don't get such a good wrap, but anyone think i should try it? Let me know-

Here's the link

kzoosho

iTrader: (16)

Im going to but for a whole different reason.

Crusher103

iTrader: (10)

they have been tried before, its the SSautochrome stuff, the y-pipe is just a normal aftermarket y-pipe and are good to use, the headers are underdebate if they do anything useful, some say they do some say they dont its up to u if u want to try them, i would because its there

JSR15

Hey, I was thinking about this for my 98 I30t as well and was wondering if anyone knows what these mods would make my car sound like. Do you know if this will give me a ricer sound?

max ride 41

iTrader: (4)

anytime you alter the exhaust from stock its gonna sound different. and the aftermarket y-pipes dont have the pre-cats so you lose low end power. i have a warpspeed y and magnaflow cat and pacesetter cattback and i dont like the pacestter cattback cause it sounds like crap, otherwise i do get a little added kick when i take her on the highway and open her up.

MOHFpro90

iTrader: (11)

Some body's making turbo up pipes on shorty headers?

kzoosho

iTrader: (16)

SHHHHHH, dont tell anyone.

dkillahster

iTrader: (1)

ok... LOOK AT WHAT HE'S DOING!!! LOOK!! LLOOKK!!!!


LOOK!!!

Crusher103

iTrader: (10)

what? so pre-cats give u more low end power?

its not the pre-cats or else the would be on aftermarket y-pipes, its the velocity of the exhaust gas flow that makes torque, and at low rpm its obviously not high, so what is causing you to lose low end power if any is the physical size of the aftermarket y-pipe not being able to keep the velocity of the flow high at low rpm

just to correct u there

larso1

It's all about exhaust scavenging effect and back pressure, tuning your exhaust system with the right components. Generally, too small and you get too much back pressure at high engine speeds. Too large and unrestricted and you don't get the scavenging effect (vacuum effect) of the exhaust gas pulses, especially at lower engine speeds (but most of you knew that ). If the diameter of your exhaust system could physically increase as the engine speed increased, you'd probably have the perfect system with max torque throughout the engine speed curve. But a compromise has to be made. Some of you older guys probably remember the tuned, long reverse cone megaphone (expansion chamber) exhaust pipes on 2-stroke racing motorcycles. The power was dead until you got it running in a high and narrow rpm band. But then, hold on because it came on like a wild man! Of course, all of the above only applies to NA intake systems.... forced induction overcomes most of these problems... in that case just make the exhaust bigger! Here's a good explanation I found, starting at the section titled Exhaust Science.

http://www.tirereview.com/?type=art&id=3589&