nistune injector resize question.

[PorkChopExpress]

i installed and resized 440cc injectors in my rb20 and it will not start unless i adjust the k value 150% . with that done it will idle ok but will go full rich if its under any load but cruising.

its a long shot but any ideas. this problem coupled with the timing that doesnt follow the map and raw values tuning makes this annoying. im purchasing megasquirt as soon as the v3 are in stock.

[Yellow4g63]

440 GTR injectors with resistor box? find the GTR injector latency and input it then turn off the 02 feed back and make sure that auto is ticked in the Kconstant window. If it's too rich slide it to the left till it clears up then watch the A/F raito. When u get it to 14.7ish that should be where ur K should be.

[PorkChopExpress]

440 gtr injectors with 10 ohm resisters. latency is the same per skylines australia . O2 is unpluged. after the resize its way to lean. i have to slide the k about 175% to the right for it to start and idle at 14.7. after that it it will run very rich at anything but idle

i thought the resize should get it to at least start/base tune that i can fine tune. where its at now id need hours on the dyno to run properly.

[Yellow4g63]

Try zeroing out the controlled area (02 controlled) of the map and adjusting the K that way too. The Auto adjuster seems like a blinds man feeling. Also u can lower the K and increase the Latency number and see if that helps at all. What maf are you using?

[PorkChopExpress]

z32 maf

[Yellow4g63]

check out this thread
http://forum.nistune.com/viewtopic.php? ... 11&start=0

[PorkChopExpress]

thanks i will give that a shot