The only thing besides the tune, that we have changed are the intake valves. The compression ratio is a bit above stock as well, perhaps close to 11:1
The vehicle overall runs good.
My Dyno guy could not check for NOX, So your saying that NOX is easily checked, can you recommend a sensor...
Working on a project on an LS2 Corvette. (this is our 7th trail vehicle (we have had a few major failures) ).
The new method / design we are using eliminates Exhaust Gas reversion while increasing volumetric efficiency and effective compression ratio. This time it is working really well, so...