Lean under WOT
Le Mans Master
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https://www.gtrusablog.com/2010/05/r...ark-plugs.html
Thread Starter
Intermediate
Joined: Dec 2024
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These are with E85 though. Heard that changes the coloring and doesn’t read the same as gas. I’ve just put new ones in now though per tuner recommendation as they were hard to read since it was ran with gas + nitrous and now E85. I’ll run them and pull them again to see coloring.
Safety Car
Joined: Feb 1999
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From: Central NJ
Supporting Vendor
Joined: Jan 2013
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From: Mooresville North Carolina
The map sensor scalar/offset are not of any map sensors I know of.
I'd recommend the Cobalt sensor. 12515136 or new part number 19418810 With that sensor you will use 200 and 8 for the scalar and offset.
I recommend reducing timing ASAP since the fueling isn't under control. 19 degrees isn't a ton but it is up there for a boosted LS.
I do not see a wideband in either log posted. Perhaps I missed it. Also heads up 97-98 LS1 have pretty miserable polling rates. Logging too much will slow them down. Only log what is necessary.
Even if you have new parts it's always a good idea to verify fuel pressure under full throttle/heavy load. Because it has 58psi at idle doesn't mean it will have that at 6000 RPM and say 10 psi of boost. The VE table looks like the tuner has been compensating for low fuel pressure.
Not a huge fan of what I'm seeing in the tune honestly. For instance.. PE while not in boost is set richer than PE in boost.. That doesn't make much sense.
I'd recommend the Cobalt sensor. 12515136 or new part number 19418810 With that sensor you will use 200 and 8 for the scalar and offset.
I recommend reducing timing ASAP since the fueling isn't under control. 19 degrees isn't a ton but it is up there for a boosted LS.
I do not see a wideband in either log posted. Perhaps I missed it. Also heads up 97-98 LS1 have pretty miserable polling rates. Logging too much will slow them down. Only log what is necessary.
Even if you have new parts it's always a good idea to verify fuel pressure under full throttle/heavy load. Because it has 58psi at idle doesn't mean it will have that at 6000 RPM and say 10 psi of boost. The VE table looks like the tuner has been compensating for low fuel pressure.
Not a huge fan of what I'm seeing in the tune honestly. For instance.. PE while not in boost is set richer than PE in boost.. That doesn't make much sense.
