LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

For those who have been helping me out with my car, DYNO graph

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Old Mar 25, 2005 | 06:48 AM
  #1  
97s10ondubs's Avatar
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For those who have been helping me out with my car, DYNO graph

http://memimage.cardomain.net/member...00_38_full.jpg

Made more than i thought it would, feels like a 300rwhp car to me, maybe its all the breaking up at the end. Plus my AF goes from 12.2 roughly on the first two runs, to under 10 the last run. I think the dyno was retarded, im gonna go to another one. Anyways need suggestions on how to fix it. It has a new coil and opti already. Wires are pretty new, im gonna try some NGK plugs to see if that helps. TR55's sound good?
Old Mar 25, 2005 | 08:37 AM
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Re: For those who have been helping me out with my car, DYNO graph

Originally Posted by 97s10ondubs
http://memimage.cardomain.net/member...00_38_full.jpg

Made more than i thought it would, feels like a 300rwhp car to me, maybe its all the breaking up at the end. Plus my AF goes from 12.2 roughly on the first two runs, to under 10 the last run. I think the dyno was retarded, im gonna go to another one. Anyways need suggestions on how to fix it. It has a new coil and opti already. Wires are pretty new, im gonna try some NGK plugs to see if that helps. TR55's sound good?
Lookin at that pic, if that is your dyno graph, I would agree that its a retarded dyno as that looks to be some bucket of a milky substance. I tried looking on your cardomain site and I didnt see any dyno graphs, so post up a link and maybe you can get some better advice.
Old Mar 25, 2005 | 09:08 AM
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Re: For those who have been helping me out with my car, DYNO graph

works fine for me, ill put it up on cardomain though
Old Mar 25, 2005 | 09:30 AM
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Re: For those who have been helping me out with my car, DYNO graph

Ok, now it changed to the dyno graph, thats really wierd. It looked like a pan of coolant mixed in with the oil.
Old Mar 25, 2005 | 09:34 AM
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Re: For those who have been helping me out with my car, DYNO graph

Dude can you get a better scan of the dyno graph, you can barely read it. Maybe shouldn't shrink it as much.
Old Mar 25, 2005 | 10:30 AM
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Re: For those who have been helping me out with my car, DYNO graph

Originally Posted by TQdrivenws6
Ok, now it changed to the dyno graph, thats really wierd. It looked like a pan of coolant mixed in with the oil.
The link still looks like that to me. NO dyno graph with the above link.
Old Mar 25, 2005 | 10:45 AM
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Re: For those who have been helping me out with my car, DYNO graph

Originally Posted by aintno6
Dude can you get a better scan of the dyno graph, you can barely read it. Maybe shouldn't shrink it as much.
did you click to enlarge it?
Old Mar 25, 2005 | 12:11 PM
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Re: For those who have been helping me out with my car, DYNO graph

Originally Posted by 97s10ondubs
did you click to enlarge it?
I just tried and when you do, you get the yellow bucket.
Old Mar 25, 2005 | 12:37 PM
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Re: For those who have been helping me out with my car, DYNO graph

What are the numbers SAE? You can see the misfire because the AFR goes lean where the graph breaks up.
Old Mar 25, 2005 | 03:42 PM
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Re: For those who have been helping me out with my car, DYNO graph

Originally Posted by turbo_Z
What are the numbers SAE? You can see the misfire because the AFR goes lean where the graph breaks up.
wouldn't a misfire cause it to go rich because it, mised the fire, meaning not buring to fuel? Or am I thinking about it the wrong way?
Old Mar 25, 2005 | 07:06 PM
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Re: For those who have been helping me out with my car, DYNO graph

Originally Posted by turbo_Z
What are the numbers SAE? You can see the misfire because the AFR goes lean where the graph breaks up.
no it says STD on the side of it, also that was one one of the runs the other run held about 12.2 the whole way, and the last run went under 10, i think the dyno operator was a moron
Old Mar 25, 2005 | 09:02 PM
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Re: For those who have been helping me out with my car, DYNO graph

Originally Posted by 97s10ondubs
no it says STD on the side of it, also that was one one of the runs the other run held about 12.2 the whole way, and the last run went under 10, i think the dyno operator was a moron
Yeah i saw it says STD thats why I asked what they were SAE. I dont see how the guy running the dyno can mess up the wideband readings...
Old Mar 26, 2005 | 06:51 AM
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Re: For those who have been helping me out with my car, DYNO graph

^ Thats true, I wonder what would cause it to go that rich on the third run and still make more power. Also can knock retard make the graph look like that on the top end. We had the car on a scanner, at idle it was pulling 4* of timing. Didnt get a chance to get a pull with the scanner hooked up and see if it was pulling it out of the whole RPM range.
Old Mar 26, 2005 | 12:30 PM
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Re: For those who have been helping me out with my car, DYNO graph

I dyno'd at cartek and didn't have any problems with the dyno or wideband 02 readings. And if you go back there make sure to ask for an SAE graph, they like giving out STD #'s for some reason. If you are really set on going to another dyno Street rods and classics wasn't bad + they let my car cool down for 15 minutes and gave me 4 runs instead of 3, but they are up in boca.
Old Mar 26, 2005 | 06:56 PM
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Re: For those who have been helping me out with my car, DYNO graph

yea i was thinking of going to Lujan motorsports in miami, my friend lucas goes there and gets his Srt tuned and dynoed. I trust him considering his car runs 122 traps and runs HARD on stock turbo and spray. But he says they know what their doing. He also had some problems at cartek.
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