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What heads and what plugs? Timing most likely. Are there any alum. specs on the plugs? Where is the timing mark on the other plugs?
 

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SOFA KING WHAT?
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What fuel?

How much compression?
 

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SOFA KING WHAT?
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What is your base timing and how much did you remove?
 

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SOFA KING WHAT?
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What's the tune up in the plate? Jetting, fuel pressure, nitrous pressure.
 

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Track heats and a 23 plug? Are you sure? A aluminum track heat would use something more like a 3923. At any rate, both are projected tip plugs and shouldn't be used with nitrous. Also, 31* is too much timing (to start with) for a 150 shot. On a SBF, I normally start around 25* on a 150 and work from there.
 

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Track heats and a 23 plug? Are you sure? A aluminum track heat would use something more like a 3923. At any rate, both are projected tip plugs and shouldn't be used with nitrous. Also, 31* is too much timing (to start with) for a 150 shot. On a SBF, I normally start around 25* on a 150 and work from there.

This is sounding better to me as well.. ;) SJ
 

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Discussion Starter #16
i run the digital 6 should i keep pulling it from the box or pull the base timing, are the 3923 ngk's
 

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EFI/N2O JUNKIE
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I think you can only pull 9.9 with the Digital 6. Why not lower the base timing some? You need enough timing to be able to do a clean burnout and stage, that's it.

Hey Drag Radial, your PM Box is full. Your wheels are on the way. Sorry for the slight thread hi-jack. ;)
 

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Burnt plug is almost always a sign of too much timing.
 
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