Nistune Forums

car: 91 sentra se-r
engine: sr20ve
mods: N1 cams, ssac header, 2.5 mandrel bent exhaust, WAI with velocity stack and ofcourse a nistune ecu an wideband for tuning

this was a 1st 2nd 3rd gear pull, i didnt rev it as hard as i could of heh

Your running rich Try and get your A/F ratio to 13.0-13.3 from 5k to 8k.

ok will do

ok so i've been playin with the pito.bin an i have come up with a few variations, now im very new at this an im just doin what i think is right.. i use a few different bins as references so i stay on track lol..

anyway i dont want to just go run these on my car without havin ya look at em atleast.. let me know what ya think..

thanks

ok so i played around with the file a little more, i dont know how the kconst got out of whack but i set it back to what it should be.. also played with the fuel map a tad more and took some timing out of the timing map in the lower rpms.. lemme know what you think BlueRb240.

tia

made another recording today, this time testing the pitolynch-v4.bin .. runs really smooth an nice not as rough as the pito.. but im just a taaadd lean now, more in 2nd gear then 3rd..

made some more adjustments, hopefully this will bring me down to the sweet spot but we'll see.. i will prolly have to wait till tomorrow to make another recording tho..

well got a chance to take her for another spin so i could make another recording..

im a little closer this time..

when i got home i tryed out the auto adjust AFR feature, then i went through the log an let it adjust my map.. not sure on how thats going to play out but its worth a shot.. i will try that map as well as a few others i did it to tomorrow..

heres the recording from version 5

the latest

here ya go

Well I went turbo, heres my current bin and a log. Obviously not perfect and needs work, but its a start!

Stock sr20ve
Precision GT2871R
STI injectors (520cc)
GTIR manifold ported out
Tial 38mm external waste gate recirc'd
8.7psi spring / no boost controller yet
Ebay bov recirc'd
3" downpipe 3" test pipe 3" exhaust
FMIC / 2.5" pliping
N60 MAF
Denso Supra TT fuel pump
Stock fuel pressure

Looks like you hit 21 deg after the shift from 2nd to 3rd. just for a sec or so. Your A/F isn't too bad looks safe to me.

Yeah, I think if I fix the load scales it will help, as of right now I maxed it out at 90 an it goes to 108. I might also lean it out a tad with the injector multiplier an not touch the load scales, that might help shift the TP unless I'm mistaken.

The reason I might lean it out using the injector multiplier is because its slightly rich everywhere. Then I will adjust the fuel map a little more.

I'm just hoping the timings ok, once I get it to use the last column on the right it should keep it away from the higher timing in the middle of the map.

I think I've got full boost by 4500 rpm @ wot and my cams are switching at 4900. Had them at 4000 an I could feel a noticeable dip.

Did you try and adjust the K with the 02 feed back turned off? I had to kill the 02 feed back switch and change the lower part of my map so it wasn't a flagged area any more before I could get the A/F to match the targets set on the nistune window. I put them back to normal after I was done and my A/F was very very close to the nistune screen. Could be you need to adjust the K and injector latency so more.

i think my narrow band o2 sensors on the fritz so i dont even use it, i actually get better more stable afr's this way. so i leave it ticked off.

for some reason i've always noticed with my car the mid range target afr's always richer then the actual afr while the higher rpm afr is really close to actual afr..

i'll play with it more when i can i post up more results