Switched plug with and without meth (beware large pictures)
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TECH Enthusiast
Joined: Apr 2008
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From: Dickinson, Tx
Switched plug with and without meth (beware large pictures) Expert opinions on what you think. There is nothing inside the plug, it's just a reflection. I couldn't get traction in 1st, 2nd and some of 3rd.
Longest part at WOT was in 3rd gear from 60-100mph. I went WOT then shut the car off for each plug.
'03 Z06, stock LS6 with BTR springs and pushrods, ECS 1500 blower doing 10 lbs at peak power, TSP 1.75" headers with cats.
Plugs are BR7EF @ 0.035
Meth
AFR: 10.5
Timing: 13*
No knock
Without Meth
AFR: 11.5
Timing: 13*
No knock
Longest part at WOT was in 3rd gear from 60-100mph. I went WOT then shut the car off for each plug.
'03 Z06, stock LS6 with BTR springs and pushrods, ECS 1500 blower doing 10 lbs at peak power, TSP 1.75" headers with cats.
Plugs are BR7EF @ 0.035
Meth
AFR: 10.5
Timing: 13*
No knock
Without Meth
AFR: 11.5
Timing: 13*
No knock
I'd say add some timing and fuel...........I doubt it would hurt it. Have you put a timing light on it to see if the timing in the computer is actually what it says? Take it to the track and try some things and report back.
Meth will change what the AFR will read.....and will look different on plugs
and it looks like you dont have enough time on the plugs to burn off the coating...or not enough timing into it to get it hot
you need a longer WOT pull, 60-100 is really short.
also, add timing to it
10lbs, you should only be 2-4* off from NA timing at the most....and you should be in the neighborhood of 12.5 AFR at WOT before Meth(and at 10psi, meth is really not a necessity, but it will help create a few more ponies and a safety margin)
and it looks like you dont have enough time on the plugs to burn off the coating...or not enough timing into it to get it hot
you need a longer WOT pull, 60-100 is really short.
also, add timing to it
10lbs, you should only be 2-4* off from NA timing at the most....and you should be in the neighborhood of 12.5 AFR at WOT before Meth(and at 10psi, meth is really not a necessity, but it will help create a few more ponies and a safety margin)
