Dyno Results
Thread Starter
Racer
Joined: Jul 2002
Posts: 437
Likes: 0
From: Rancho Santa Margarita Ca
Dyno Results
Dyno Results
Max Power =270
Max Torque=301
107000 Miles
Only thing I am worried about is one run had a A/F of 11 and another of 11.6. Anyone know what could be going on ?
I would post a picture if i knew how
Max Power =270
Max Torque=301
107000 Miles
Only thing I am worried about is one run had a A/F of 11 and another of 11.6. Anyone know what could be going on ?
I would post a picture if i knew how
Race Director
Joined: May 2001
Posts: 14,165
Likes: 9
Re: Dyno Results (keekster)
At least your A/F is safely on the rich side.
BTW, could you contact the dyno shop and get the actual dynojet run files and e-mail them to me? I collect them. I am going to venture a guess however and say 100% bone stock LT1.
BTW, could you contact the dyno shop and get the actual dynojet run files and e-mail them to me? I collect them. I am going to venture a guess however and say 100% bone stock LT1.
Race Director
Joined: May 2001
Posts: 14,165
Likes: 9
Re: Dyno Results (keekster)
I'd be willing to bet that the graph looks a whole lot like this.
If you have a scanner and have scanned the image but don't know how to post it, I'd be more than happy to help out. If you just have a paper copy if you can get me the files from the shop I can make my own graphics and post them as well. :cheers:
If you have a scanner and have scanned the image but don't know how to post it, I'd be more than happy to help out. If you just have a paper copy if you can get me the files from the shop I can make my own graphics and post them as well. :cheers:
Thread Starter
Racer
Joined: Jul 2002
Posts: 437
Likes: 0
From: Rancho Santa Margarita Ca
Re: Dyno Results (Nathan Plemons)
Thanks Nathen,
I will take you up on the posting help tommorow. It is bone stock down to the paper Air filter. :) That is exactly what the graph looks like.
[Modified by keekster, 6:20 AM 10/18/2002]
I will take you up on the posting help tommorow. It is bone stock down to the paper Air filter. :) That is exactly what the graph looks like.
[Modified by keekster, 6:20 AM 10/18/2002]
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
Re: Dyno Results (keekster)
You're running a little rich so a K&N and cut lid will likely lean it out nicely at WOT.
Then a nice cat back should put that A/F ratio just where you want it.
Then a nice cat back should put that A/F ratio just where you want it.
Drifting
Joined: Jun 2001
Posts: 1,997
Likes: 1
From: Lake Ozark MO
Re: Dyno Results (65Z01)
Well, the above would work for about 10 minutes until the computer made some adjustments. Then she'd be right back to where she started.
One thing that may help a bit is new O2 sensors. I've heard that as they degrade they start to return "lean" information (i.e. they send out a lower voltage signal than if they were new... all things being equal). This would cause the engine to run a bit rich as the computer tries to compensate for the perceived lean condition.
One thing that may help a bit is new O2 sensors. I've heard that as they degrade they start to return "lean" information (i.e. they send out a lower voltage signal than if they were new... all things being equal). This would cause the engine to run a bit rich as the computer tries to compensate for the perceived lean condition.
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Team Owner
Joined: Dec 2000
Posts: 90,675
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From: SE NY
Cruise-In II Veteran
Re: Dyno Results (keekster)
What else should I look at ?
Though the ECM ignores O2 sensor data at WOT, to determine injector pulse width it looks at:
-coolant temp
-MAP sensor
-TPS
You can use a scan tool to look at these parameter values at WOT as well as assure that the BLM cell is #15 with a value of 128 and the Integrator value is 128, which says that the ECM is ignoring O2 sensor data.
Though the ECM ignores O2 sensor data at WOT, to determine injector pulse width it looks at:
-coolant temp
-MAP sensor
-TPS
You can use a scan tool to look at these parameter values at WOT as well as assure that the BLM cell is #15 with a value of 128 and the Integrator value is 128, which says that the ECM is ignoring O2 sensor data.