s14-rb20det

the maf is clamp 4.50v now the fuel reg is nissmo i have 21 psi on fuel pressure because I'm using the 440cc inj that is the only way i can drive the car if i raise the fuel pressure to 43 psi the car when hits 4000 rpm my a/f is on 11 then i have fuel cut the car doent pass the 4000

Hi Guys, I really need your help, I have been trying to solve my problem on rb20det silver top I have the emanage ultimate and I used the jump No 8 for 5 volts. I cant make the car pass than 4000 RPM with upgrated injections, I am using 440 inject. I tried using the injector before and after stocking injections 260 cc lag time 0.7 after injector 440 cc lag time 0.86. The modefication that the card had t3t4 turbo after marking intercooler 3 inch pipe q45 trotle body boosting 16psi z32 fuel pump 43psi fuel presure. If I low the fuel presure to 20psi the car run final all the way to 7000 but the settings for the injecors I have to keep 260 cc lag time 0 after 260 cc lag time 0. If you put the stock injection back to set up the fuel presure back to 43 the car drives without any problem but the stock injection max out that is why I tried to go with big injectors but I cannot figure out what is wrong with the emanage I tried hree different tuning guys none of them made the car work. If anybody know please let me know. Thanks