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Old 12-08-2012, 04:01 PM   #301
Bariga
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could you add more fuel to idle section of fuel map? To me its looking like car goes lean and ecu adds fuel and its going back and worth hunting.
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Old 12-08-2012, 05:54 PM   #302
kellygnsd
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What kind of rails do you have?


Nevermind, I see they are the FIC rails. Is that a side feed conversion rail?

Last edited by kellygnsd; 12-08-2012 at 06:04 PM.
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Old 12-08-2012, 11:33 PM   #303
Layvon
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Quote:
Originally Posted by Bariga View Post
could you add more fuel to idle section of fuel map? To me its looking like car goes lean and ecu adds fuel and its going back and worth hunting.
I would - but the tune was rock solid for 600 miles. I am wondering if it is cold weather?? Before when I was driving it was 45+ most days

Kelly - yes side feed conversion.
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Old 12-09-2012, 12:35 AM   #304
sense of nature
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Wow .. sorry to hear bout your bad luck episodes
I hope you can get things fig out quickly.. new motors don't like to have things a skew..
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Old 12-09-2012, 12:44 AM   #305
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Unfortunately I agree. That is why all it is doing is getting looked over and over started, as soon as it goes into eff you mode I shut it off. I've done that process 4-5 times only.

Bariga I forgot to mention - this occurs at more than just idle. The say I noticed it I was driving, when barely on the throttle (but moving) the car would be pissed. If you are lightly accelerating, fine. Didn't check what open loop was doing.
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Old 12-11-2012, 05:43 AM   #306
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Tore the BOV apart last night and didn't see anything I didn't like, so it went back on, and acted the same.
While apart I compressed the cylinder a couple times to see if maybe it stuck open, but no luck.
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Old 12-11-2012, 07:41 AM   #307
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You said you had fuel leaks. Get that sorted first. Get your injectors out and give them a proper clean if necessary and make sure that the Orings you use fit properly in the Sidefeed conversion rails you got. If you have so much as a fuel leak it will never run fine.

Are you sure Latencies/Scalars, etc. are all fine? Check what the A/F correction is doing when it starts hunting like that. Is the A/F correction going up and down like crazy as well? Do you have an exhaust leak which makes the O2 read AFR values that aren't really there? Did you check all solenoids connected to the Intake Manifold? PCV, etc. all kinds of rubbish that could possible leak?

I might have missed something you answered/found out earlier but didn't have time to read the whole thread.

Just to make sure.... are you still on the OE ECU? If not what are you on?
Did you check all sensor data to make sure there are no crapped out sensors that are supposed to be used for certain compensations like Baro pressure, Charge temps, etc.? I can keep speculating and the list goes on and on and I would like to help you out.

Jasper.
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Old 12-11-2012, 10:38 AM   #308
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any boost/vacuum leaks?
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Old 12-11-2012, 11:59 AM   #309
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Could it be a leak in the charge pipes, I know you had some issues with final fit of the IC piping? Maybe interference caused/ forced a coupler off, cracked a weld or a wear through a tube? I'm sure you did another boost leak check, right?
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Old 12-11-2012, 03:14 PM   #310
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Quote:
Originally Posted by jkopinga View Post
You said you had fuel leaks. Get that sorted first. Get your injectors out and give them a proper clean if necessary and make sure that the Orings you use fit properly in the Sidefeed conversion rails you got. If you have so much as a fuel leak it will never run fine.
I dont have any more fuel leaks. Maybe I didn't update that concisely, but I fixed the leak I did have on Saturday.

Quote:
Originally Posted by jkopinga View Post
Are you sure Latencies/Scalars, etc. are all fine? Check what the A/F correction is doing when it starts hunting like that. Is the A/F correction going up and down like crazy as well? Do you have an exhaust leak which makes the O2 read AFR values that aren't really there? Did you check all solenoids connected to the Intake Manifold? PCV, etc. all kinds of rubbish that could possible leak?
Latencies / Scalars are believed to be correct. When the car first starts up, it is running on what is stored in the computer while the sensors warm up. Once my fuel trims start being adjusted based on the O2 readings is when it starts messing up.

I did not think to check PCV valve, Maybe I will yank that off and see if it shakes around. When I was doing a boost leak test I did hear air coming through that tube going to the Air Oil Separator. . maybe its opened up.

There is no exhaust leaks. I checked that Saturday when I was under the car.

Quote:
Originally Posted by jkopinga View Post
Just to make sure.... are you still on the OE ECU? If not what are you on?
Did you check all sensor data to make sure there are no crapped out sensors that are supposed to be used for certain compensations like Baro pressure, Charge temps, etc.? I can keep speculating and the list goes on and on and I would like to help you out.
Jasper.
I am on the OE computer. Once I find this issue, I'm going to drive 100-200 more miles and start swapping in the Link. Barometric has been confirmed. I haven't logged the MAF for temp, but I probably should / could.

Thank you for the very helpful post, I definitely have some more things to take a look at.

Manitou - I did do another boost leak test, but I think I overlooked the PCV, at least looking at it.

Last edited by Layvon; 12-11-2012 at 08:11 PM.
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Old 12-11-2012, 03:38 PM   #311
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I would delete the PCV valve altogether and plug the intake manifold that it vents to. Collect that vent from the block with the heads or run it to the can separately if you can. Look at the Crawford Crankcase venting diagram. I think there's is the best OTS system and I running one.
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Old 12-11-2012, 04:53 PM   #312
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Quote:
Originally Posted by manitou View Post
I would delete the PCV valve altogether and plug the intake manifold that it vents to. Collect that vent from the block with the heads or run it to the can separately if you can. Look at the Crawford Crankcase venting diagram. I think there's is the best OTS system and I running one.
I dont want to return the oil to the crank case though. I could just delete the PCV and run the line to the catch can and pull through like I am now. I was confused by deleting the PCV system the couple weeks I was doing it, so I said oh well and left it.
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Old 12-11-2012, 06:34 PM   #313
manitou
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Yeah, you don't have to return the oil to the crank case. Just run it to the catch can from that block vent.
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Old 12-11-2012, 08:11 PM   #314
Layvon
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Edit -
Checked the PCV out. I took it off and got the ball moving around nice and freely again, it was indeed a little gummed up. Fired it up. Idled for about 45 seconds this time with out doing the thing, was all but inside when i heard it start to do the 12 - 17 AFR shuffle. My truck is now in my garage also and it is cramped so I couldn't run from the drivers seat to the engine bay quickly. I need two people to listen for noises in the engine bay. The funny thing about all of this, it will sit there and do this and not throw a single code. Not even a misfire.

Levon

double edit

Read a post HERE and his was a bad sensor. Wonder if my brand new sensors **** out already. 500 miles later

Last edited by Layvon; 12-11-2012 at 09:28 PM.
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Old 12-13-2012, 04:57 AM   #315
manitou
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I have an extra good front o2 sensor if you need it. LMK
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Old 12-13-2012, 02:38 PM   #316
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Hey Layvon,

I'd love to see this in person sometime. I met you in Cadillac coming back from the Subaru parade and you saved our group with that coolant swirl tank. I didn't remember the EFR being used. I'm trying to convince my friend to do an EFR build on his '11 STi haha
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Old 12-13-2012, 08:50 PM   #317
Layvon
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Quote:
Originally Posted by manitou View Post
I have an extra good front o2 sensor if you need it. LMK
Thanks! I have a spare from a buddy on the way but another just in case wouldn't be a bad idea.
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Old 12-13-2012, 08:51 PM   #318
Layvon
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Originally Posted by Xcelr8to1320 View Post
Hey Layvon,

I'd love to see this in person sometime. I met you in Cadillac coming back from the Subaru parade and you saved our group with that coolant swirl tank. I didn't remember the EFR being used. I'm trying to convince my friend to do an EFR build on his '11 STi haha
Well I was going to use an EFR but Borg pissed me off ... the 7670s are just now shipping.
I chose a TS 6262 instead
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Old 12-13-2012, 11:10 PM   #319
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Ahhh okay. I only had a chance to skim the thread. Sorry to see you having these mis-haps, but it's just a car. You can beat it.
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Old 12-14-2012, 05:57 AM   #320
Layvon
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Its nothing but a thing. I want it to be fixed but I'm not stressing out about it like I would have 3 months ago.

My next motor build is going to be a lot different than this one. I look at some of the stuff I did and just shake my head.
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Old 12-26-2012, 04:50 AM   #321
Layvon
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Well, a few of you now know, but I replaced the sensor yesterday and it idles much better. Let it sit and idle for 20 min before making this post, and AFRs stayed between 14.0 and 15.5 for the most part. I have to put the fender liner back in and zip tie that into place. (04 Liner with 06 Fender / bumper aka being cheap).

If the snow gives me an opportunity to do so, I'm going to take it for another 100 miles or so and call it good.

Junior has been contacted to get this bitch done.
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Old 12-26-2012, 09:44 AM   #322
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Nice build buddy lovin that fuel setup
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Old 12-26-2012, 10:26 AM   #323
manitou
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Quote:
Originally Posted by Layvon View Post
Well, a few of you now know, but I replaced the sensor yesterday and it idles much better. Let it sit and idle for 20 min before making this post, and AFRs stayed between 14.0 and 15.5 for the most part. I have to put the fender liner back in and zip tie that into place. (04 Liner with 06 Fender / bumper aka being cheap).

If the snow gives me an opportunity to do so, I'm going to take it for another 100 miles or so and call it good.

Junior has been contacted to get this bitch done.
How much snow did you get over there? Hopefully you can get her out and put some miles on it!
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Old 12-26-2012, 10:16 PM   #324
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Quote:
Originally Posted by gtasti View Post
Nice build buddy lovin that fuel setup
Thanks dude - the trans and drive shaft are great! If I ever need another drive shaft I'm going with carbon fiber though

Quote:
Originally Posted by manitou View Post

How much snow did you get over there? Hopefully you can get her out and put some miles on it!
We haven't gotten any today so that's good. Hoping Sunday to get some miles on it. 100 isn't many as long as the AFRs are good. Then its getting oil changed and trailered.
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Old 12-26-2012, 10:41 PM   #325
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Put some miles on that beast. Do you log your brake-in drives?
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