Thread: In Between Shifts Richness

Do you guys know what controls how rich the engine will be in between shifts? K value is one, but that touches the whole map.

My problem is, muffler firing because it's too rich

Are you recircing or venting to atmosphere?

Blow through recircing, Nissan does it on purpose to richen it up between shifts, it supposedly helps the smooth shifts. Trying to find a table for it to turn it down. If I turn down the K value any more then it gets too lean at idle.

i think nistune has a feature for that but im not certain..

I always thought those back fires were caused from the excess fuel left over in the intake manifold being sucking in between shifts. That's what I thought caused those back fires.

It can be, but I run rich, at WOT, below 12, and no muffler fires. Now it mainly muffler fires in first and second gears hehe.

Back fire is when the combustion flame goes back into the intake manifold and explodes in the intake mani. Results in this thread.

Been looking but unfortunately it does not, though there are some other thing that may be useful. The new trial deal only lets it stay open for 5 minutes or so, thus can't even test it out in real life .

look, i've never bought software for anyhing in my life until i ran across nistune.. i figured if i was gonna buy the hardware i might as well get the software also.. but i can understand you not wanting to buy it since you have a calum an can tune it with tunerpro which is free..

anyways i love the nistune program, its so easy to understand.. hella user friendly.. no regrets

Oh no it makes sense to buy it if you are starting fresh. Other then having some newly defined Tables/Functions (which are so far useless), I have no reason for it. If I didn't have Data scan it would help, I see that it support AEM UEGO for data logging!

Since it's such a short trial, I can't even see the benefits of it. Because I can't do a test run to see what it can offer over what I currently use. Which btw I paid for Data Scan and even Tuner Pro. Both pieces of software are exceptional and have helped me a great deal thus far.

Does Nistune knock count actually work? I didn't see any references to the knock sensor in the address files.

well for some older ecus yes.. but not the newer ones as of yet.. its bein worked on tho.. they're always updating software fixing bugs and adding stuff ect.. its pretty cool

the realtime map tracing / datalogging is a must have for anyone tryin to tune they're own ride