a few current KA-T issues. Searched. Help Plz.

[Suicide.Veteran]

some issues:

Well, first, the temperature has been fluctuating around here and it gets down to like 30s-40s. When it is cold out, my car dies when I take it out of gear sometimes, unless i take the dec. air settings off. Why?

And, I am running 10w-40 currently, and i get burnt oil in the exhuast at idle randomly on cold nights, but its not continuous. I dont see any leaks and noting is leaking down into the cylinders from bad gaskets. Should I switch oils?

Finally, drivng around, it sounds like i my car is stumbling when I try to hold throttle and cruise the closer the throttle % gets to 21-18%. What can I do to fix it?

[Florida240sx]

List your set-up. What do you have for tuning? SAFC ECU wideband?

[Suicide.Veteran]

ok

fresh rebuilt 97 KA less than 2000 miles

t25 at 7.5 psi for daily driving 10 for track.

reringed 370cc injectors.

new walbro 255 pump

new z32 n60 MAF

stock FPR

ngk bkr7es's and a new 02 sensor

SAFC II tuned on a dyno (supposedly but it doesnt seem that different).

timing at 16 degrees btdc

crushed dsm bov

sr SMIC

friend has a wideband in case of retuning

[Florida240sx]

Check for boost leaks. If none, then get your friends wideband and see what happens at that throttle %. I can make guesses but if your system is ealed and yoru airflow's are correct then we can easily figure it out.As for coming out of gear my car does that...Car goes rich and fouls the plugs....If you are able to downshift it stays smooth right?? Is your BOV recirculated?

[Suicide.Veteran]

vac is at -20 at idle, like -23-25 off throttle in gear. Ive been working at the stumble for a while, but my car hold its AFR's at mid 11 to low 12 if i change my throttle point to 20% it wont stumble cuz it will change when it starts to correct fuel, but i dont wanna do that and run lean.

If I downshift, it's fine, but even recirced it dies out, or comes dangerously close.

[crzycav86]

if your bov is recirculated, you're supposed to turn off the dec air... dec-air is used for atmospheric bov's.

what's your throttle changeover set at now? you might want to change the interpolation between high and low map so that the changeover is more smooth.(make the low throttle map at higher throttle% and/or make high throttle map at lower throttle%) if your changeover is in the 18-21% range, it might be messing up if it's abruptly changing maps...

[Florida240sx]

I have my throttle point low 35% high 65% because Cruisng at 4000rpms I'm at 19% so therfore you don't need to have any extra fuel being pushed in.. change your low to 30/35% high maybe 65% see how that works for ya...If bov is recirc then there should be no dec settings

[Craving4Boost]

I'm recirculated but had to turn on my dec-air settings after I put in my enthalpy tune. But oh well, whatever works...works.

[Biggamehit]

Z32 N62* right??

my car was running a bit stupid when it started getting cold. i just had to up my fuel a bit more. I NEED WIDEBAND

[Suicide.Veteran]

if your bov is recirculated, you're supposed to turn off the dec air... dec-air is used for atmospheric bov's.

what's your throttle changeover set at now? you might want to change the interpolation between high and low map so that the changeover is more smooth.(make the low throttle map at higher throttle% and/or make high throttle map at lower throttle%) if your changeover is in the 18-21% range, it might be messing up if it's abruptly changing maps...

ok, so, my bov was atmosphereic before with dec settings, and it would still die like the dec air wasnt even functioning. then I recirced it and took off the settings and it still came close to and died, but not as often.

So, your saying to chnage the throttle hi and low points to keep my cruising throttle point out of the injector changeover range correct? Will changing the throttle settings lean me out considerably and require a retune?

And no BigGame you're thinking of the n62 which cqame from the 300zxTT. If I am correct, the N60 came in the n/a Z32 and Maxima.