Nistune Forums

Start looking at the trims at cruise. So take it out for a run when warm and see where the trims are around 2000rpm light load. They should be near 0% when your mixtures are 14.7:1 If they are not then you need to adjust your K/TIM until they are and then idle AFRs should be better [/quote] Would I ...

Hey guys so just starting to learn how to tune my own map for my s14 rb25det s1 and I'm a bit confused at the moment. I unplugged my o2 sensor and adjusted my fuel map and after taking a log everything looks good in my opinion. I was able to get my idle just around 14.7 and wot around 11.5. Now when...

Hey guys so I've been having this problem with a popping noise at high rpm, it sounds like I'm hitting a cut off of some sort but I cant figure out whats going on. I uploaded my tune and my logs.

Matt wrote:You have transplanted the engine. There is no speed signal to the ECU (always 0). So it's using safety rev/load limits. Increase these to fix the problem

Would I just increase the Speed limit 1 in the limit section or the other limits also?

Hey so I been having problems with my rb25 s1 swapped in a s14. Sometimes when I get into boost its hesitates and seems like the ecu is cutting it off for some reason. I'm currently on the stock tune still, with basic bolt on and using a rb20 maf.

Matt wrote:Well your MAF voltage is stuck on 0.5V all the way through. Might want to check that out first

Turns out it was a maf issue, the wiring harness that came with my swap was pinned for speed density, moving 2 pins solved my problem, now I just have to find out what’s causing my missing issue at idle.

Here is a log i took, at idle its around 10.3 afr and when i try to rev it, it wouldnt go pass 2500(around there).

Hey so this is my first time starting my engine since i performed the swap. I decided to go ahead and flash a stock map and monitor stuff. I tried giving it some throttle and i noticed it was acting weird anything about 2000 rpm. I got a caution warning on nistune saying ecu load maxed reached. Here...