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How does this dyno sheet look?

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Old Jul 9, 2007 | 10:04 PM
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Default How does this dyno sheet look?
This is before/after a tune, but i am no expert on reading these things. Obviously the numbers are awesome for just a tune, but does everything else look good as well?
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Old Jul 10, 2007 | 01:17 AM
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It's large...very large!

It looks like it was kind of rich before. Take it to the track and see what it'll do. Enjoy!
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Old Jul 10, 2007 | 09:43 AM
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Personally, it's a little lean for my tastes from about 5200rpm on up. When you put the car on the street, it'll usually lean out a little more than what it reads on the dyno. If I were you, I'd have the tuner increase fueling 2% across the board at WOT to richen you up a tad.
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Old Jul 10, 2007 | 09:46 AM
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Looks very similar to my graph on my 1997 M6 with 228/232 112+4 cam, ported 243's, LS6 intake, Vararam, Lg Lt's. Nice setup, I bet its a blast.
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Old Jul 11, 2007 | 08:18 AM
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As far as the lean part goes. Shouldnt it richen up a tad after I install the Vararam? I have it here in front of me in a box. Right now, I have a blackwing without the fog holes cut.
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Old Jul 11, 2007 | 08:20 AM
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Originally Posted by Will2
As far as the lean part goes. Shouldnt it richen up a tad after I install the Vararam? I have it here in front of me in a box. Right now, I have a blackwing without the fog holes cut.
Probably not.
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Old Jul 11, 2007 | 08:21 AM
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Nice gains from the tune, it was very rich before the tune, thats where you were losing the power from.
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Old Jul 11, 2007 | 10:08 AM
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Originally Posted by Will2
As far as the lean part goes. Shouldnt it richen up a tad after I install the Vararam? I have it here in front of me in a box. Right now, I have a blackwing without the fog holes cut.
Your best bet is to find someone with a portable WB O2 sensor (like an LM1) and take the car out on the street after you install the VR kit. I'd be willing to bet you hit 13.5:1 at WOT - which is too lean IMO.
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Old Jul 11, 2007 | 01:23 PM
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Anyone else want to back him on this?
Where is the ideal A/F ratio?
Should the Vararam richen or lean me?
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Old Jul 11, 2007 | 01:52 PM
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Originally Posted by Will2
Anyone else want to back him on this? anyone?
Where is the ideal A/F ratio? (peak torque) 12.5~13:1 (peak hp)
Should the Vararam richen or lean me? Lean...
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Old Jul 11, 2007 | 01:56 PM
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Thanks a lot buddy. I'll get this worked on.
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Old Jul 11, 2007 | 02:27 PM
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Originally Posted by SSpdDmon
Your best bet is to find someone with a portable WB O2 sensor (like an LM1) and take the car out on the street after you install the VR kit. I'd be willing to bet you hit 13.5:1 at WOT - which is too lean IMO.
LEAN. You're adding additional air to a fix amount of fuel (PE)
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