LNFwagonSS

Can't seem to shake the misfires during 2-3 & 3-4 NLS. It does it about 50% of the time. I'm shifting as fast as I possibly can and I don't ever miss the gears. but still I get the occasional multiple misfires and blow black cloud out the exhaust. Plugs are gapped at .30-.31. Could the 300 cell cat have anything to do with it?

cmiller8006

iTrader: (3)

Some of what I used to see was you hit the rev limiter during the shift causing misfires. Might be that. Shift 500 before your limiter.

LNFwagonSS

I usually only rev out to 6000-6300. And I have tried doing it at lower rpm and seems to actually make it worse. When the air is more dense outside is when it's most prevalent.

SSlobalt

Personally, if I only have issues during NLS, I'd just stay away from it.

LNFwagonSS

I was really hoping not to hear this as an option. I plan on doin a lot of drag and roll racing so I need the NLS. It doesn't help 1-2 but it most certainly helps 2-3 and 3-4. It almost seems like the NLS feature is not disengaging in time but I'm not sure.Wonder if I could just get the WOT box and use it's NLS since I will be needing the 2-step when I get slicks.

LNFwagonSS

How were you able to NLS so easily at ~7500+ rpm shifts Chris? I've seen all your vids and looks like you bury the tach when you shift. I'm assuming you always NLS though..

cmiller8006

iTrader: (3)

I only nls to forth most the time with the built set up.

LNFwagonSS

Ok good to know. I should have the f40 installed within a couple months and was hoping to get this figured out before that. It definitely is more of a problem 2-3 anyway but still does it 3-4. This last time I NLS 2-3 it was a pretty severe blowout since the car died right after but still started right back up and ran strong. If it keeps happening though I'm afraid I'll be building an LDK short block sooner than I would like. Is there anything in the tune that could be adjusted to make 3-4 NLS more consistent? Right now I'm trifecta e-47 tuned so I pretty much have to tell him EXACTLY what needs to be changed to fix the issue it seems.

kzak104

iTrader: (1)

Doubt it's spark blowout if it only happens when you nls. Either shifting to fast or not fast enough.

If you screw up a nls it just farts/misfires until you let off the gas. It's done it to me a couple times are even stalled the car out once. Lol. I don't do it anymore. Just wrecks ****.

Sl0wbaltSS

Do you have comp mode on?

kzak104

iTrader: (1)

Doesn't need to be on. You can nls in any mode.

LNFwagonSS

What else could it be if it's not blowout? I thought the NLS feature is active for 1 second after you push in the clutch? Or does the NLS feature become ready with a NLS window when you approach redline before depressing the clutch?

kzak104

iTrader: (1)

I find when I take my time to shift I NLS perfect every time. I'f I sike myself up as I watch the rpm clime I shift to fast get either get locked out of gear or the car farts until I let off the gas. Don't forget the tach lags a little. I've managed to NLS when the tach said 5k rpm. Lol.

LNFwagonSS

Ha, I know exactly what you mean! It's friggin weird how it acts. I now have a N2mb wot box on the way, so well see how that works for 3-4 shifts.

willdrew

Could be in tune I would stay away from trifecta. I'm e47 but hptuners and have no problems nls

user 72239

iTrader: (4)

I used to NLS 2-3 and 3-4 and unless I timed it right at about 6600 RPM's I'd hit the rev limiter and the car would fall on its face.

I've only NLS 2-3 once with the ZFR lol.

ECaulk

iTrader: (6)

Its not in the tune. I'm not a trifecta fan, but it is not in the tune. I'm betting its because he isnt quite NLS perfect, like stated it acts funky when you don't NLS correct.

No *****

user 72239

iTrader: (4)

Me and third gear have become best friends, I dont wan't it to leave yet.

CudaJoe

iTrader: (1)

If I were drag racing, Id just not NLS. Its a fun feature but thats all it is, a feature for selling a car. People shifting normally seem to have just as good ETs as people who NLS.

LNFwagonSS

Ive only NLS 2-3 a few times with this trans since I didn't have much success with it on previous trans. When speedo barely passes 6k mark is when I shift and still have blowout/misfires. If it's severe enough the cel starts flashing at me.

The other day I tried a 3-4 NLS at about ~5800 ( May be closer to 6k with the tach lag) with no problem and that actually felt better than shifting later it seemed. I think cmiller and kzak are right on with this. I just need to shift sooner. I always attempted to shift right before the limiter but I was probably right at the limiter unknowingly, because I was not considering tach lag. Depending in the tune and turbo used, shifting way earlier may actually be more beneficial.


For drag racing I think that's debatable especially with large turbos.

user 72239

iTrader: (4)

yeah my limiter is 7000.

So 6500 is the sweet spot even with speedo lag

LNFwagonSS

I should've mentioned before but my limiter has not been raised. Im still at stock rpm limit.

user 72239

iTrader: (4)

oh yeah, then you want to NLS at 5800 or 5700 if you are still on the stock 6200 Rev limiter.

RyBread761

iTrader: (2)

Yeah, there should only be one pop and a black puff if done right

bland1

My car seems to fall flat on its face when I nls with my tune active (Not blaming trifecta) I also get a weird clicking sound from the front passenger side of the motor when it does. No idea what it is.

I don't nls shift anymore.