Go Back   986 Forum - The Community for Porsche Boxster & Cayman Owners > Porsche Boxster & Cayman Forums > Boxster Racing Forum

 
 
LinkBack Thread Tools Display Modes
Prev Previous Post   Next Post Next
Old 03-03-2018, 03:52 PM   #11
Registered User
 
Join Date: Jan 2015
Location: San Francisco bay area
Posts: 70
Here's my dyno chart. I used the official NASA dyno provider, MCE Dyno, who uses a mobile one. Looks like you used the same dyno.

I got a peak of 192 HP and 176 ft-lbf of torque. I have the same muffler, but I still have the stock cats (to be street legal).

I see you got 197 and 178. I think I could get those 5 more HP if I replaced the cats with straight pipes.

I wonder how 197 at the wheels translates to HP at the crank. I think one loses about 15% through the gearbox and tires. So 197/.85 = 232 HP at the crank?

Is torque also lost through the gearbox, or only HP? Would it be 178 ft-lbs at the crank or 178/.85 = 209 at the crank?


Last edited by Greg Holmberg; 03-03-2018 at 04:12 PM.
Greg Holmberg is offline   Reply With Quote
 



Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -8. The time now is 08:24 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2025, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0
Copyright 2025 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page