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thstone · 07-08-2014, 06:55 AM

To put it simply, without a before and after dyno, there is no way to know if the change added any power.

That is why I dyno tested my new exhaust and if you look at the data, you'll see that the hp increase is very small (7hp) and ONLY at certain RPM's (only above 5800 rpm). This info was different than what some people were reporting based on the good ol' butt dyno. I'm not saying that the butt dyno doesn't work, just saying that it is somewhat subjective.

http://986forum.com/forums/general-discussions/51783-top-speed-pro-1-catback-exhaust-hp-increase.html

Soon, I will also be posting a before and after dyno test of my old 136,000 mile engine and my completely rebuilt engine so we can see what, if any, difference there is in power between an old tired motor and a new rebuild.

07-08-2014, 06:55 AM	#7
thstone Certified Boxster Addict Join Date: Nov 2010 Location: Los Angeles Posts: 7,669	To put it simply, without a before and after dyno, there is no way to know if the change added any power. That is why I dyno tested my new exhaust and if you look at the data, you'll see that the hp increase is very small (7hp) and ONLY at certain RPM's (only above 5800 rpm). This info was different than what some people were reporting based on the good ol' butt dyno. I'm not saying that the butt dyno doesn't work, just saying that it is somewhat subjective. http://986forum.com/forums/general-discussions/51783-top-speed-pro-1-catback-exhaust-hp-increase.html Soon, I will also be posting a before and after dyno test of my old 136,000 mile engine and my completely rebuilt engine so we can see what, if any, difference there is in power between an old tired motor and a new rebuild. __________________ 1999 996 C2 - sold - bought back - sold for more 1997 Spec Boxster BSR #254 1979 911 SC POC Licensed DE/TT Instructor Last edited by thstone; 07-08-2014 at 06:59 AM.