Nistune Forums

why is R34 Neo fuel maps 02 feedback flags active across the whole map?
i can't seem to turn them off using 'O' key.

Try lowering the lambda to less then 1.
On most ECU's you can't disable feedback if the cell is leaner than Stoich 14.7 value.

please explain how this is done exactly, i tried to lower the numbers by just 1 point but it goes from 14.7 to 7.38target afr.

make the adjustment from 14.7 to 14.6 on target afr map.
or make adjustment from 1.0 to .9 on lambda map.
then press "o" key on that cell.

tried as you have suggested, that works fine for the low load area's but thats where i would like the 02 feedback to work. i am trying to turn the 02 feedback off in boost transition and higher load/rpm area's which isnt working for me.

Cant turn it off on ECUs which have VE maps. Its on permanently and you use the VE map to trim the O2 feedback based on the alpha learn gauges

Matt wrote:Cant turn it off on ECUs which have VE maps. Its on permanently and you use the VE map to trim the O2 feedback based on the alpha learn gauges

Is there an instruction manual for tuning type 3 ecu's?

I've never dealt with VE maps before

What is puzzling is that my idle is rich, at about 11:0 AFR. Changing the K value does nothing. The narrow band O2 sensors are pegged rich. Not sure how to fix it. This a JWT 740 single pop bin

also, what should the injector multiplier be for a 74occ injecot on a 16 bit ecu for a 1995 300zx?

Thanks

Stock injection mutliplier = 288. Adjusted for 740 = 144 (ie half)

Try disabling O2 feedback temp (set to 205 degC) and then see what AFRs are like and get this right first with any minor adjustments to Injection multiplier (so that it is 14.7 leanest at lowest point on the map)

Matt wrote:Stock injection mutliplier = 288. Adjusted for 740 = 144 (ie half)

Try disabling O2 feedback temp (set to 205 degC) and then see what AFRs are like and get this right first with any minor adjustments to Injection multiplier (so that it is 14.7 leanest at lowest point on the map)

I tried setting the temp to 205, and then tried changing the multiplier, but nothing happens to the AFR. However, if I set it to something extreme like 1 or 500 it stalls, but anything in between and the AFR doesn't change much. Something is clearly wrong here, but I don't know what it could be. I never had these kind of crazy issues with my type 2 board.

The AFR hovers around 11-12 according to both my LC-1 and LM-2. Narrowband inputs are pegged rich

try the latest version 0.10.10 here since K constant had some issues with adjustment of smaller values. I've fixed that up now