Help me with my abysmal ignorance

BLM · 03-07-2011, 08:15 PM

Well all will surely appreciate the work you put in to amassing such a database. It will certainly benefit us all and hopefully foster competition and competitive pricing amongst vendors. And I'm well aware that the 302 is meaningless without a baseline and the value itself is contingent upon corrective factors. But thank you for pointing that out to those who may not know how many variables go into dyno results. I'm also assuming that the major factor in exhaust power output will be the diameter of the piping and the presence/absence of restrictive elements such as curvature of the piping itself and presence/absence of catalytic converters. I think for most of us the sound and looks play a greater role in deciding if and what brand of aftermarket exhaust to purchase, as the performance increases are likely to be very similar.

PS thanks to your research you have inspired me to save the $300 and go with hoses and K&N drop-ins instead of the Stillen CAI.

Jordo! · 03-07-2011, 08:49 PM

Quote:

Originally Posted by BLM

Well all will surely appreciate the work you put in to amassing such a database. It will certainly benefit us all and hopefully foster competition and competitive pricing amongst vendors. And I'm well aware that the 302 is meaningless without a baseline and the value itself is contingent upon corrective factors. But thank you for pointing that out to those who may not know how many variables go into dyno results. I'm also assuming that the major factor in exhaust power output will be the diameter of the piping and the presence/absence of restrictive elements such as curvature of the piping itself and presence/absence of catalytic converters. I think for most of us the sound and looks play a greater role in deciding if and what brand of aftermarket exhaust to purchase, as the performance increases are likely to be very similar.

PS thanks to your research you have inspired me to save the $300 and go with hoses and K&N drop-ins instead of the Stillen CAI.

Hopefully more people will send me drf files so I can derive better estimates

This is a tentative conclusion, but the biggest restriction (other than the cats) appears to be the OEM Y pipe, which necks down to a smaller diameter than the rest of the exhaust, I believe.

Inspector71 · 03-08-2011, 11:50 AM

Wow, the information here confirms my ignorance. All I wanted was to maximize the performance potential of the car as a daily driver, have fun doing it, and, okay, defend the Nissan brand if a Cayman decided to toy with me. I might be over the hill, but I'm not under it yet.

03-07-2011, 08:15 PM	#1 (permalink)
BLM Enthusiast Member Join Date: Feb 2011 Location: NJ Posts: 342 Drives: 2011 Silver M6 sport Rep Power: 16	Well all will surely appreciate the work you put in to amassing such a database. It will certainly benefit us all and hopefully foster competition and competitive pricing amongst vendors. And I'm well aware that the 302 is meaningless without a baseline and the value itself is contingent upon corrective factors. But thank you for pointing that out to those who may not know how many variables go into dyno results. I'm also assuming that the major factor in exhaust power output will be the diameter of the piping and the presence/absence of restrictive elements such as curvature of the piping itself and presence/absence of catalytic converters. I think for most of us the sound and looks play a greater role in deciding if and what brand of aftermarket exhaust to purchase, as the performance increases are likely to be very similar. PS thanks to your research you have inspired me to save the $300 and go with hoses and K&N drop-ins instead of the Stillen CAI. __________________ K&N // GTM // BERK Last edited by BLM; 03-07-2011 at 08:23 PM.

03-08-2011, 11:50 AM	#3 (permalink)
Inspector71 Enthusiast Member Join Date: Sep 2009 Location: Lee's Summit Missouri Posts: 337 Drives: 2015 Pearl White Z Rep Power: 17	Thanks to all Wow, the information here confirms my ignorance. All I wanted was to maximize the performance potential of the car as a daily driver, have fun doing it, and, okay, defend the Nissan brand if a Cayman decided to toy with me. I might be over the hill, but I'm not under it yet.