Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum - View Single Post - Free flowing exhaust without the "Ricer" sound

hsitko · 10-23-2010, 07:50 PM

Apexi Noir
there is a video clip of it in a 240 on youtube. Sounds great.
As for the 2.5 to 3 in debate. Wow. So horsepower is made by how much cfm will flow through and engine. Basically. So if you decrease back pressure you increase how much cfm the head can flow. The reason for back pressure is to artificially increase compression since not all the exhaust will escape. By going to 3 in on an na setup you typically see a small loss in low to mid range torque and a small gain in top end power due to increased flow potential. I love how the people who had so much trash to talk about 3in on an na ka are no where to be found no that proof was posted. Lol or should i say roflkoptor.

10-23-2010, 07:50 PM	#32
hsitko Join Date: Jul 2010 Location: wa Posts: 45 Trader Rating: (1)	Apexi Noir there is a video clip of it in a 240 on youtube. Sounds great. As for the 2.5 to 3 in debate. Wow. So horsepower is made by how much cfm will flow through and engine. Basically. So if you decrease back pressure you increase how much cfm the head can flow. The reason for back pressure is to artificially increase compression since not all the exhaust will escape. By going to 3 in on an na setup you typically see a small loss in low to mid range torque and a small gain in top end power due to increased flow potential. I love how the people who had so much trash to talk about 3in on an na ka are no where to be found no that proof was posted. Lol or should i say roflkoptor.