Official GMPP Stage 3 Dyno Session
#76
Thread Starter
Senior Member
iTrader: (3)
Joined: 04-01-06
Posts: 933
Likes: 24
From: Los Angeles, CA
I'll keep the thread posted once I hit the track. Just gotta get a few more things (slicks and a DP) then I'll hit the track.
Make sure you keep us posted with your results as well! Good luck man
BTW are you running the stock exhaust on that shorty/catless setup?
Last edited by RoelSS; 01-20-2011 at 01:40 AM.
#77
Ok, all went well at Haddad earlier today. I'll add the link from youtube to this post on Monday. I'll also add the Dyno Chart printout I have. Well, Here are the numbers:
On Stage 3 + 100 octane mode + 50 Shot:
Max HP: 274.8 @ 6864 rpm
Max Tq: 306.8 @ 4469 rpm
AFR: 12.459:1
On Stage 2 only:
Max HP: 217.9 @ 7000 rpm
Max Tq: 181.6 @ 5481 rpm
AFR: 11.227:1
Here is the link for the Video:
YouTube - GMPP Stage 3 Cobalt on the Dyno
On Stage 3 + 100 octane mode + 50 Shot:
Max HP: 274.8 @ 6864 rpm
Max Tq: 306.8 @ 4469 rpm
AFR: 12.459:1
On Stage 2 only:
Max HP: 217.9 @ 7000 rpm
Max Tq: 181.6 @ 5481 rpm
AFR: 11.227:1
Here is the link for the Video:
YouTube - GMPP Stage 3 Cobalt on the Dyno
dyno I use reads in the 13s when my wideband reads 11.5...
roel are you stating your afrs based off a wideband reading from the collector, or a nearly always inaccurate tailpipe reading?
#78
Thread Starter
Senior Member
iTrader: (3)
Joined: 04-01-06
Posts: 933
Likes: 24
From: Los Angeles, CA
I really cant recall, it was a while back ago. I think it was a tailpipe sniffer as you state. I just went in there and asked Mike Haddad for 3 runs. This is what I got. I have the print out, but I'm not sure if it states on their how the AFR was read. I'll look when I get home.
#80
most likely at the tail... unless you have a spare bung in your collector or pre cat in the dp... the afrs were read @ the muffler.
willing to bet your afr on a dry 50 shot is low 11s
willing to bet your afr on a dry 50 shot is low 11s
Thread
Thread Starter
Forum
Replies
Last Post