rider384

iTrader: (3)

I can't get going into boost; soon as it goes above ambient pressure it just starts to **** itself. My datalogs don't show AFRs, does that mean my LC-1 is shitting itself and it's not getting signal? It shows in tunerstudioms though, it just doesn't include it in the datalog. In tunerstudioms though, it shows running nearly 11:1.. at idle.

I'll post my datalogs; anyone see anything wrong with them?

levnubhin

iTrader: (30)

What plugs, what gap and how much boost?
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rider384

iTrader: (3)

Stock plugs and wires (NGK) and 7 pounds. But I doubt it's that; it was running fine. Turbo blown. Replaced turbo. Now this. And the boost level is irrelevant since it sputters so bad that it can't really gain any boost.

rider384

iTrader: (3)

Could an exhaust leak before the WBO2 cause this? I highly doubt it since it does fine till boost, but it seems like it's worth asking.

Faeflora

iTrader: (2)

I too say change your plugs and wires. It will cost you $20 to eliminate that as the culprit. If you look at the threads here you'll see the same symptoms cured by that fix. Gap lower too.

rider384

iTrader: (3)

I'll try that, but they were replaced about 1k miles ago.

So I just went out and test drove again, I learned something. If I keep it floored through the bumpiness it eventually takes off like it should; it almost seems transition dependent or rpm dependent, haven't decided which. Took a better datalog, I'll get it up in a second.

rider384

iTrader: (3)

Ok, datalogs attached. I'm going down to 0.8AFR (!!!) and 250-some % duty cycle...

EDIT3: That 0.8 wasn't AFRs, they're normal, so this is a spark problem isn't it?

WTF?

EDIT: Ok, looks like MAT is no longer working, could this cause what's happening to me? Like stuck in warmup mode or something?

EDIT2: So could this be caused by having no open loop mode? I just set mine to turn on as soon as it goes above ambient pressure

EDIT4: OK, overboost protection was set to -0.6psi... This could be it, can't wait to testdrive tomorrow. How does overboost protection work? Like I said it hit that, stumbles, and if I keep at it for long enough it'll eventually go. Sound like it's hitting overboost?
EDIT5: Actually, that wouldn't explain the 250% duty cycles yet normal AFRs...

lordrigamus

iTrader: (14)

Whooah, one thing at a time. Yes, fix the ait signal first. If MS thinks it's -40 ait, it will dump a **** ton of fuel in it. My connector vibrated loose on mine and it did the same thing, read -40. I barely made it home(10 miles) and had to change the plugs the next day because they were fouled.

rider384

iTrader: (3)

Forgive the noob question, but where is the MAT sensor? Hmm, that would also explain the duty cycles and richness all over aswell.

lordrigamus

iTrader: (14)

Where did you put it? It should be in the intake pipe or the intake manifold somewhere. I can't see it from here.LOL

rider384

iTrader: (3)

Oh, nevermind, I misunderstood. It's late at night, what can I say

I'll double check, one of the wires fell out and I put it back into a random one hoping it was right

EDIT: Ok, IAT was hooked up wrong, gonna go try again tomorrow. Hopefully it'll cure it, but doubtful since it felt like a park probrem.

rider384

iTrader: (3)

Took some datalogs this morning. Doing all of that last night fixed my messed up AFRs and it does enter boost now, but I get some sort of weird stumble. You can see it in the datalogs; the TP is 100%, pressure is building, but the rpms don't go anywhere. AFRs are normal and duty cycles are normal aswell.

lordrigamus

iTrader: (14)

What size injectors are you running? I'm seeing duty cycle spikes well over 85%. Are your injectors maxed out? 136.5% duty cycle is not normal.