Nistune Forums

Posted: **Fri Jul 04, 2008 9:38 am**

Hi

the problem started when i upgrede my s13 sr20 with
g2871r, z32 maf, 800cc top feed and aftermarket intake manifoild.

so the prob is when change the injectors and maf sensor in nistune the car runs perfect when it's under load i can go for drag racing(12,5 afr), but the car doesn't run at all on low rpm and it's inposible to cruise. the afr is about 28 and the car is deaing i have to hit the gas to keep it runing.

and when i drage the k konstant to have idile around 14.7 then the car goes in reach under load about 9.8 ~ 10.. AFR

what should i change to get it working right!

ps
sorry about english (it's my 3rd language)

Posted: **Fri Jul 04, 2008 12:12 pm**

sounds like injector latency needs to be increased.

the K constant is a mulitplier of injector pulsewidth

whilst the injector latency adds microseonds of extra pulsewidth to the toal injection pulsewidth. this helps improve idle, and may help your cruise conditions also

Posted: **Sat Jul 05, 2008 6:41 pm**

Posted: **Sat Jul 05, 2008 6:42 pm**

thx that helped!

car is runing perfect!

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