ClubLexus - Lexus Forum Discussion

Performance & Maintenance Engine, forced induction, intakes, exhausts, torque converters, transmissions, etc.

Exhaust back pressure equals ? in hp gain

Thread Tools
 
Search this Thread
 
Old 05-31-07, 12:02 AM
  #1  
JohnEd
Lead Lap
Thread Starter
iTrader: (1)
 
JohnEd's Avatar
 
Join Date: Jun 2006
Location: oregon
Posts: 448
Likes: 0
Received 0 Likes on 0 Posts
Default Exhaust back pressure equals ? in hp gain
I recently measured my back pressure in the center section of my stock exhaust system. I had 1 psi. After replacing my center resonator with a section of 2.5 inch pipe, the back pressure dropped to zero psi. Can anybody tell me how many horse power I should have gained with that back pressure drop of one psi? Techie out there somewhere?

Thanks

John
JohnEd is offline  
Reply Like
Old 05-31-07, 12:09 AM
  #2  
TheMole
Lexus Champion
iTrader: (13)
 
TheMole's Avatar
 
Join Date: Oct 2006
Location: SoCal
Posts: 3,487
Likes: 0
Received 5 Likes on 5 Posts
Default
I always understood you wanted high velocity with zero back pressure. Not sure how to calculate horsepower with it though.
TheMole is offline  
Reply Like
Old 05-31-07, 12:13 AM
  #3  
O. L. T.
Keeper of the light
iTrader: (17)
 
O. L. T.'s Avatar
 
Join Date: Feb 2003
Location: My little world
Posts: 34,097
Received 335 Likes on 221 Posts
Default
moved to proper forum
O. L. T. is offline  
Reply Like
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Electric Exhaust Cutout Back Pressure?
ZAM
RC - 1st Gen (2015-present)
0
01-19-18 08:54 AM
do we need exhaust back pressure or not?
Ltaboso
IS F (2008-2014)
7
02-07-15 09:20 PM
Will De-cating the Exhaust create more power
Triple C
GS - 1st Gen (1993-1997)
7
07-31-08 10:35 AM
Exhaust Sys Back Pressure Measurements
JohnEd
Performance & Maintenance
3
03-21-07 06:25 PM
SC stock exhaust back pressure
JohnEd
SC- 1st Gen (1992-2000)
1
03-19-07 06:41 PM
Tags
Back to Subforum
Performance & Maintenance
View Next Unread
Will an LS400 rear bolt up to an SC?




Advanced Search
Quick Reply: Exhaust back pressure equals ? in hp gain


Reply Closed Thread Share
Forum Jump

All times are GMT -7. The time now is 09:28 AM.