Stanlyz

Thank you all for you replies you have led me in to the direction of fixing my problem... fixed the o2 issue further tuning on the car is performed by DVS Performance Tuning

bump... still looking for any info on exhaust temp sensor and the switching module operation on bnr32

with consult cable connected i get a code 55 (no problem found) I have a boost leak tester, i have tested for all the vacuum leaks and boost leaks (nothing to really worry about was found) the engine runs fine up to a certain RPM or boost: it will run fine up 3000rpm (no back fires, no misfires) at that point i am at 7-10psi of boost, when the car gets to any higher rpm it starts backfiring through exhaust (farting) and loosing all the power at that time boost is at 10-16psi. so i am ether overboosting and the ecu is shutting the ignition and fuel off or i am running out of fuel and the car run way to lean (basically need to tune it)

10-1 is at idle 1000 rpm (o2 plugged in) if o2's are unplugged wide-band reads 12.4-1 at idle your logo says you tune cars, want to give it a try???

location is usa state mo i have a wide band, knock detection assuming that the knock sensors work is done through nistune, but dummy me cant use the program cant seem to understand what to do......

the location of the module is under the passenger seat as far as i found (but i cant find any other info on the animal)

Right. that is exactly what i am talking about.. I know that ecu should supply some voltage for oxygen sensors (.4v) then the the ecu will use that voltage for the fuel trims + or - .3v .(with in 0 to 1v) Like i said I dont understand why I have 2.5v (oxygen sensors are new) the cars runs extremly rich 10.1 I dont have the switching module (I dont know what id does, and whats its there for, and what kind of voltage it gives to the ecu) The problem about dyno shop, not a lot of people over here are familiar with nistune (the closest shop that does that, is 8hrs away) and i dont really what to drive the car that far, its going to have to be towed

Hey guys. I need some help with my car. what i have is: s14 with a r32 drive train (engine ,trany,ecu mafs etc) the problem i am having is that both of my o2 sensors are reading more than 2.5v and the car is obviously running rich. (since its a project car and not an original skyline) I do not have all the sensor connected to the ecu, like the exhaust temp sensor, and exhaust switching module that goes to the pin 32 on the ecu so the question is what it does, and what kind of voltage does it send to the ecu, and do i have to have it (switching module)? also i am running on nistune but have no IDEA how to tune the car everything on the engine is stock besides : turbos upgraded to steel exhaust wheel, wastegate actuators are set to 7psi cracking 15 fully open, and hks boost controller set to 15spi please, any help would be appreciated

Hi. I am Stan I got a project car. its s14 with gtr's drive train