ran out of range

[stiv]

rb20det s13 200sx time attack track car, running on E85(bioethanol 104ron ) was running 290whp with the standard turbo at 1bar of boost and evo4 510cc injectors. this was all good no running problems and map was fine,

changed the turbo to a gt2871r(a good bit bigger) and the top of the map maxed out still running lean so adjusted K to get it to run right at the top(got it out on track for the day) but the mid range and bottom are very ritch 10.5-11afr and the map is bottomed out,


i set up a lot of cars to run E85, but you need a LOT more fuel at the top then petrol but not much more at the bottom so you need a bigger range, how do i get more range?

[Matt]

To get more range try pulling back the latency when using K to make it more richer up the top. let us know how you go with that. its what others tuners I've spoke to have been doing