-slow ej-

some guy wants to trade me his apexi n1 exhaust with 4inch pipe from cat to the canister from his si for a si stock exhust and i was just wonderin if the si stock exhaust is a single tip exhaust or is it a dual tip exhaust and would it make a difference if he had a single or dual?

kustomize89

I believe that it was single, but why would you run a 4" exhaust(to big no power)

4door_gsr_ftw

Daul Tips=RICE
Single=PERFECT
And why would you need a 4" exhaust anyway. You want some backpressure.

91civicDXdude

NO YOU DONT WANT BACKPRESSURE.
jesus when will this myth die.

do a websearch for "exhaust gas velocity" or "delta pressure"

back pressure is resistance and is always bad.

blah13

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 91civicDXdude &raquo;</TD></TR><TR><TD CLASS="quote">NO YOU DONT WANT BACKPRESSURE.
jesus when will this myth die.

do a websearch for "exhaust gas velocity" or "delta pressure"

back pressure is resistance and is always bad.</TD></TR></TABLE>
Exactly, what people dont understand is that you cant make the exhaust too big, the velocity then drops too low. People that say "you need backpressure" probably put 3" piping on their stock D series. You will lose power that way. The optimal exhaust will have just enough diameter to flow with no backpressure.

90civichbsi

iTrader: (1)

my stock si exhaust had dual tips comming out of a single muffler exiting on the drivers side. unless your running a huge turbo, dont trade for that exhaust

Hcivic88

most stock Si's had single exhaust back to the muffler. then two tips exiting the muffler. DX's had single all the way

bryant

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Hcivic88 &raquo;</TD></TR><TR><TD CLASS="quote">most stock Si's had single exhaust back to the muffler. then two tips exiting the muffler. DX's had single all the way</TD></TR></TABLE>

Yep

roadrunner

...this would be twin tips, vs dual tips, no? Si had twin tips...