P0171 - again and getting more frequent
- Thread starter Spamby
- Start date
Hahahahaa okay. Got it.
I do think it might be your MAF though.
I do think it might be your MAF though.
Spamby
Meat Product Toy
I kinda gave that feeling.
I dunno if its me but it seems the voltage does not increase fast enough as the turbo spools. Iirc from my last logs, I am seeing 4.10 v well past full spool, like 4200-4400 rpm. I would think I would see the higher voltages lower around 2900-3400 when the turbo is kicking serious spoolage and sucking in a lot of air
Do you know anyone nearby with an STi? Idk how expensive a new MAF is, but I imagine it's not cheap. If you
could just swap MAFs and go for a spin, it might tell you something. You may not see an issue, but his vehicle
would probably throw a code if the MAF is actually bad. Then again, it would suck if you put your MAF is someone
else's car and he runs lean and blows his shit up.
could just swap MAFs and go for a spin, it might tell you something. You may not see an issue, but his vehicle
would probably throw a code if the MAF is actually bad. Then again, it would suck if you put your MAF is someone
else's car and he runs lean and blows his shit up.
Spamby
Meat Product Toy
Keeping fingers crossed!
Sounds good to me.
Ummm....fill up 80-90% of the way with that E80 and then top off with 93, then agitate 
LOL
I'm only half sure that's a good idea, but I think it would enrich your AFR slightly. Do you have
a wideband?
Any other mods help me out here? I'm going to say, if you need a richer mixture, add more 93;
leaner, more ethanol mix.
LOLI'm only half sure that's a good idea, but I think it would enrich your AFR slightly. Do you have
a wideband?
Any other mods help me out here? I'm going to say, if you need a richer mixture, add more 93;
leaner, more ethanol mix.
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Spamby
Meat Product Toy
Ummm....fill up 80-90% of the way with that E80 and then top off with 93, then agitate
I'm only half sure that's a good idea, but I think it would enrich your AFR slightly. Do you have
a wideband?
Any other mods help me out here? I'm going to say, if you need a richer mixture, add more 93;
leaner, more ethanol mix.
I could blend but an going to have to figure out the ratio.
No AFR gauge only going off of the AP.
Cobb did the tune so I will call them tomorrow and catch their advice. Perhaps they can provide a new map via Email... Hell I dunno.
In the short term, I'd throw some 93 in there. It can't hurt, at least until you can get a new tune.
...and of course, as usual, probably advisable to stay out of boost. Let me know what Cobb says,
I am very curious to find out.
...and of course, as usual, probably advisable to stay out of boost. Let me know what Cobb says,
I am very curious to find out.
Spamby
Meat Product Toy
Full tank right now. Lol! Just fruckin filled up.
I do have a 91 map.
The shit part about this is that I was tuned the same time last year and the ethanol was at 70%. Still, no guarantees that they wouldnt change it.
Maybe it's just some minor tweaking they need to do? Will see and definitely report back.
Spamby
Meat Product Toy
Called Cobb. They are closed today. Will try again tomorrow.
Installed stock air box. No CEL since last week. Logs look better with it on. ECU doesn't seem to be dumping as much fuel but it still doesn't look right.
Didn't do an ECU reset since I put the box back on. Wondering if I should ?
Installed stock air box. No CEL since last week. Logs look better with it on. ECU doesn't seem to be dumping as much fuel but it still doesn't look right.
Didn't do an ECU reset since I put the box back on. Wondering if I should ?
HolyCrapItsFast
Drinks beer!
Yes!
Spamby
Meat Product Toy
Confirmed from thou Holiness. Reset being performed.
Spamby
Meat Product Toy
No CEL since air box on.
Fuel trims look a bit weird still. Still hitting that lean spot and then going heavy rich. Noticing this lean to rich anomaly happens in the 2500-3000 ish range under lighter loads and cruising. Can feel the car slightly buck a bit.
I am starting to think this may be the notorious lean stumble.
Still haven't gotten a hold of Cobb yet. Been crazy busy at work. Will keep trying but it may just happen on Saturday.
Fuel trims look a bit weird still. Still hitting that lean spot and then going heavy rich. Noticing this lean to rich anomaly happens in the 2500-3000 ish range under lighter loads and cruising. Can feel the car slightly buck a bit.
I am starting to think this may be the notorious lean stumble.
Still haven't gotten a hold of Cobb yet. Been crazy busy at work. Will keep trying but it may just happen on Saturday.
Spamby
Meat Product Toy
Stock air box still on and pleased to report still no CEL. With the air box off, LTFT was at +25%. With the box on, LTFT was at +17.2%. These were under the highway light throttle cruise scenarios right in the 2500-3000 rpm range.
Today I added 2 feet of fuel hose for the lean stumble fix. I am pleased to report that the LTFT is now at +6.2% in the above scenarios. I am done.
Who knew that a foot or two more of hose was the ultimate fix?
Today I added 2 feet of fuel hose for the lean stumble fix. I am pleased to report that the LTFT is now at +6.2% in the above scenarios. I am done.
Who knew that a foot or two more of hose was the ultimate fix?
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