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POWER FC TECH & FAQ for SR20DET

POWER FC TECH & FAQ for SR20DET

"INJECTOR CORRECTION"
- Formula = stock 370cc divided by nismo 555cc = 0.66cc x 100 = 66.6%.
So go into the power fc and change the INJ correction to 66% or 67%
"INJECTOR LATENCY CORRECTION"
From what i have found the latency for the nismo's is 0.71msec and stock is 0.70msec (FOR SR20DET REDTOP)
- Formula = nismo 0.71msec minus stock 0.70msec = 0.01msec
So i would change the INJ Latency numbers for each injector to 0.1msec, correct?
for the people who cannot work it out for them selves:
S13/S14 - stock injector specs - 370cc - 0.7ms Settings for 555cc injectors 370/555 = 0.66 x 100 = 66% 0.71 - 0.7 = + 0.1msec lag
so your setting for 555cc on S13/S14 are: INJ correction = 66% Latency correction = +0.1msec lag
Settings for 740cc injectors 370/740 = 0.5 = 50% 0.66 - 0.7 = -0.04
so your setting for 740cc on S13/14 are: INJ correction = 50% Latency correction = -0.04msec lag
S15 - Stock injector specs - SR20DET (s15) - 480cc - 0.5ms settings for 555cc injectors 480 / 555 = 0.86 x 100 = 86% trim 0.71 - 0.5 = +0.35msec lag
so your setting for S15 are: INJ correction = 86% Latency correction = +0.21msec
RB20DET (silvertop) - stock injectors specs - 260cc - 0.7ms settings for 555cc injectors 260/555 = 0.46 x 100 = 46% 0.71 - 0.7 = + 0.1msec lag
so your setting for RB20DET are: INJ correction = 46% Latency correction = +0.1msec
RB25DET (non Neo) - stock injectors specs - 370cc - 0.52ms settings for 555cc injectors 370/555 = 0.66 x 100 = 66% 0.71 - 0.52 = + 0.19msec lag
so your setting for RB25DET are: INJ correction = 66% Latency correction = 0.19msec
RB25DET (Neo) - stock injectors specs - 380cc - 0.6ms settings for 555cc injectors 380/555 = 0.68 x 100 = 68% 0.71 - 0.6 = + 0.11msec lag
so your setting for RB25DET are: INJ correction = 68% Latency correction = 0.11msec
RB26DETT - stock injectors specs - 440cc - 0.77ms settings for 555cc injectors 440/555 = 0.79 x 100 = 79% 0.71 - 0.77 = - 0.06msec lag
so your setting for RB26DETT are: INJ correction = 79% Latency correction = -0.06msec
IMPORTANT: thats close enough to drive it to your tuner (DO NOT HIT BOOST, dont leave it for 3 weeks untill its tuned)!...no guarantees either if the above settings damage your car! - GOOD LUCK
Stock Injector sizes and Lag times:
RB26DETT - 440cc - 0.77ms
RB25DET NEO - 380cc - 0.6ms
RB25DET - 380cc??? ( i thought it was 370cc) - 0.7ms
RB20DET - 260cc - 0.7ms
SR20DET (s15) - 480cc - 0.5ms
SR20DET (s13) - 370cc - 0.7ms
SR20DET (s14) - 370cc - 0.7ms
CA18DET - 370cc - 0.6ms
 

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