My dyno, running way too rich
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My dyno, running way too rich
Here is my dyno, I could have made a few more hp if the car could have cooled some more. I drove 2.5 hours up and went straight on the dyno.
Look how rich it is running, on the first run (not shown) it was as rich as 10.85:1 a/f ratio on the top.
Inmotion is going to give me a new tune, I sent them my timing datalog and my dyno graph.
dyno.jpg
Temps: 82 degrees
Humidity: 19%
Mods: CAI, Tune, Code3 pulley
I bet I can pick up 15 or 20whp accross the board with a better a/f ratio.
Look how rich it is running, on the first run (not shown) it was as rich as 10.85:1 a/f ratio on the top.
Inmotion is going to give me a new tune, I sent them my timing datalog and my dyno graph.
dyno.jpg
Temps: 82 degrees
Humidity: 19%
Mods: CAI, Tune, Code3 pulley
I bet I can pick up 15 or 20whp accross the board with a better a/f ratio.
Last edited by mrphotoman; 10-03-2008 at 08:56 PM.
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Re: My dyno, running way too rich
Originally Posted by BrianBrave
12.0 is about right!
I was running 10.5 after installing the 185 pulley prior to the tune..after the tune, I now run 12.5-13.0 I don;t think you want to run any leaner then that.
I was running 10.5 after installing the 185 pulley prior to the tune..after the tune, I now run 12.5-13.0 I don;t think you want to run any leaner then that.
afratio.jpg
i think i will shoot for 12.2:1, that should be safe and make more power. WHat do you guys think?
My timing looks really conservative but then again i do not know a lot about this particular motor. does anyone else have their timing graphed?
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Re: My dyno, running way too rich
Originally Posted by Opticon
That is a very short dyno run. I'd be curious to know how the car is doing starting closer to 3000 rpm.
And those wheels DO look pretty good.
And those wheels DO look pretty good.
hopefully i can get some other guys with code3 pulleys to post their dynos so i can compare their a/f ratios.
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Re: My dyno, running way too rich
Here is the same basic set up....I have the Code 3, Needswings, and LET Tune and it was hotter outside. Jerry at LET asked me to send my ECU back so that he could lean it up on the bottom end. I am waiting to to get 240's Manifolds before I send it back to him.
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Re: My dyno, running way too rich
Originally Posted by BLKFIN
Here is the same basic set up....I have the Code 3, Needswings, and LET Tune and it was hotter outside. Jerry at LET asked me to send my ECU back so that he could lean it up on the bottom end. I am waiting to to get 240's Manifolds before I send it back to him.
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Re: My dyno, running way too rich
Originally Posted by mrphotoman
Thanks, so it looks like you made about the same. inmotion is trying to say i am having massive belt slip or something is wrong and that is why my a/f ratios are so rich. my belt is very tight and looks brand new.
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) and then I will get Jerry to tweak mine also.
Re: My dyno, running way too rich
Remember the car is "Drive by wire", meaning you must use a Dynapak or similar dyno that spins all 4 wheels equally otherwise the ABS/ESP will offset throttle, timing fueling etc and your results will be tainted. If you have access to a Star Scan you can defeat this by setting it in "Dyno" mode. Forget pulling Fuse #17 & 18 as this will NOT completely defeat the traction control and can cause an over rich "limp" condition. If you cannot find a proper dyno or Star Scan then it is best to gather your logs via OBD or quality gauges with logging capability.
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Re: My dyno, running way too rich
Originally Posted by BLKFIN
Here is the same basic set up....I have the Code 3, Needswings, and LET Tune and it was hotter outside. Jerry at LET asked me to send my ECU back so that he could lean it up on the bottom end. I am waiting to to get 240's Manifolds before I send it back to him.
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Re: My dyno, running way too rich
Originally Posted by Mimi05SRT6
According to the air/fuel on your dyno sheet, you are already running lean, so why would LET want to make it even leaner? Above 12 should be more than enough without causing any problems.
12.5 is about perfect. I am running less than that on the bottom end. Also, the tailpipe sniffer used on dynos is about .5 off from being so far down from the actual combustion.
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