Nistune Forums

My engine (VG30DETT) is runing very rich in 4º gear and above!

I run water/meth and i´m tuning my air fuel to compensate that extra fuel, in the first 3º gears, i get my air fuel to around 12 whit water/meth in action.

When i shift to 4º, the engine go rich around 10! this is the same number i get in all gears, before i change some cells in the map for the extra fuel of the meth.

Is this because the ecu change to the upper gear mix? my upper gear is a lot rich that the primary

Tks for any help nistuners!

Sounds like it might be. Set the 'high gear coeff' parameter to 0 to test with just the main fuel maps

Yep thats it!

I Set the 'high gear coeff' parameter to 0 and now i get 12 air fuel ratio in high gears

Tks matt

Its i nice thing the upper gear maps. You can do a more agressiv timing map.
Here are more infos: viewtopic.php?f=8&t=2472

A&M-Motorsport wrote:Its i nice thing the upper gear maps. You can do a more agressiv timing map.
Here are more infos: viewtopic.php?f=8&t=2472

Nice! i must try that tks mate