Open dump versus recirculated dump quantified

NYSpeed Automotive
1

Well our tC with a recirc’d dump tube put down 244whp, 255wtq @ 8.5 PSI on a T3/T4. 271whp, 292wtq @ 11 PSI on the same set-up.

Dynos for each:
http://dezod.com/misc_images/TE_tune_10-15.jpg
http://dezod.com/files/11psi%20dyno%20pull.jpg

Now we decided to see how much power we would gain with open dump. Needless to say, we picked up 7whp, 5wtq @ 8.5 PSI & 10whp, 1wtq @ 11 PSI

New Graphs:
http://dezod.com/misc_images/dyno-at-8.5psi.gif
http://dezod.com/misc_images/dyno-at-11-psi.gif

Side by side of 8.5 PSIs:
http://dezod.com/misc_images/TE_tune_10-15.jpg
http://dezod.com/misc_images/dyno-at-8.5psi.gif

Sides of 11:
http://dezod.com/files/11psi%20dyno%20pull.jpg
http://dezod.com/misc_images/dyno-at-11-psi.gif

2

open 4L

3

blah

Pics of recirc downpipe?

4

BTW here is a vid of the open dump at the track w/ a babied launch, and a 106 trap

http://media.putfile.com/dezod-S1-open-dump

5

open dump ftw

6

:word: def…

7

Open dump is great for the track but it sucks toconstantly have to worry about cops.