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Old 10-11-2012, 08:27 PM   #1
02nismokiller
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I just moved up a few months ago from Florida and I had my 04 wrx tuned with Jester Tuning at Titan Motorsports and he did an amazing job. But now that I'm in upstate NY and the weather is starting to be pretty cool (40-50*f)... So I went tonight for a fun spirited run and my car is running ridiculously rich at 10.0 flat (reading afr with my aem uego wideband) and when it reaches 5500rpm it bogs really bad and I let off the gas... I'm only running 18psi, bigger fmic, turboxs bov, intake, and 3" tbe

I'm in upstate Patterson NY
Thanks in advance
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Old 10-11-2012, 08:48 PM   #2
quazimoto
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So..........what's the question?
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Old 10-11-2012, 09:15 PM   #3
02nismokiller
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Why was it that when I was in Florida and her tuned she was running awesome and now that I moved up to NY the car is super rich and bogging past 5500rpm... What's wrong? What's causing this?
And no I ain't new to turbo cars as I also have a turbo sentra spec v that I built...
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Old 10-11-2012, 09:29 PM   #4
SpecBlitzed
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No smart ass here. Air becomes thicker (dense) the cooler the air becomes. Your car was tuned in a relative humanity density air point. ( Flordia very high humanity and probably high 80 90 degrees) Now the colder air is thicker meaning there is a lot I say a lot more air being brought into the engine. The ecu thinks the motor is at higher rpms due to more air flow. Turn your boost up to compensate the richness, but don't do this because this = excessive boost pressures. It would help correct you air fuels ratio but will mess with other shiz it.
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Old 10-11-2012, 09:39 PM   #5
the suicidal eggroll
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Quote:
Originally Posted by SpecBlitzed View Post
No smart ass here. Air becomes thicker (dense) the cooler the air becomes. Your car was tuned in a relative humanity density air point. ( Flordia very high humanity and probably high 80 90 degrees) Now the colder air is thicker meaning there is a lot I say a lot more air being brought into the engine. The ecu thinks the motor is at higher rpms due to more air flow. Turn your boost up to compensate the richness, but don't do this because this = excessive boost pressures. It would help correct you air fuels ratio but will mess with other shiz it.
Holy crap that's so incredibly wrong I don't even know where to begin...

No offense, but you should probably stick to the Newbie forum and stay out of Technical for a while.
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Old 10-11-2012, 09:45 PM   #6
BlackEyeII
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oh the relative humanity of it...

I wonder what your temperature compensation table looks like?

Also, has anything else changed with the car? 10/1 ratio doesn't seem like it should cause the car to bog badly, something else may be up. I would check everything and make sure you don't have a boost leak after the turbo. I am no pro but if your using the MAF and you loose air after it has been metered it could theoretically cause a rich condition.

That being said I have blown up two STI's so my name is mud.

Last edited by BlackEyeII; 10-11-2012 at 09:58 PM.
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Old 10-11-2012, 09:55 PM   #7
02nismokiller
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Quote:
Originally Posted by BlackEyeII

+11ty billion
You guys talking to me or specblitzed?
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Old 10-11-2012, 10:02 PM   #8
the suicidal eggroll
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Quote:
Originally Posted by 02nismokiller View Post
You guys talking to me or specblitzed?
Talking to specblitzed


Your issue sounds like a boost leak to me.
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Old 10-11-2012, 10:51 PM   #9
02nismokiller
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I'll do a boost leak later in a bit... Nothing else has been changed nor touched... Lets hope it's just a leak lol
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Old 10-12-2012, 06:28 PM   #10
02nismokiller
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So I have a leak right where the intercooler meets the bov... I sprayed soapy water and saw bubbles
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Old 10-13-2012, 04:11 PM   #11
02nismokiller
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Any other ideas? Now I can't even build boost and its pig rich!! I can email someone my data logs...
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Old 10-13-2012, 04:15 PM   #12
the suicidal eggroll
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Did you fix the leak? Do you have an exhaust leak? Have you taken any logs?
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Old 10-13-2012, 04:33 PM   #13
02nismokiller
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Lol exhaust leaks won't do this... I did find a boost leak where by bov mounts to in my tmic... I can email my logs to someone...
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Old 10-13-2012, 04:46 PM   #14
the suicidal eggroll
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It will if it's between the engine and the uppipe.
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Old 10-13-2012, 07:01 PM   #15
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Originally Posted by the suicidal eggroll View Post
It will if it's between the engine and the uppipe.
Similar thing happened when my old uppipe cracked in half, screwed up fueling all over the place.
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Old 10-14-2012, 10:11 AM   #16
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Quote:
Originally Posted by 02nismokiller View Post
Lol exhaust leaks won't do this... I did find a boost leak where by bov mounts to in my tmic... I can email my logs to someone...
back to the first part, did you fix the boost leak? Logs are pointless, you have a leak, fix it!
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Old 10-14-2012, 07:47 PM   #17
02nismokiller
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Quote:
Originally Posted by rkramer

back to the first part, did you fix the boost leak? Logs are pointless, you have a leak, fix it!
No not yet, I'm waiting for tomorrow that the Subaru dealer is open so I can order new gaskets...
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Old 10-14-2012, 08:01 PM   #18
alexmartynyuk
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a boost leak will do that, also another thing could be that your drawing more air at colder temps and hitting untuned cells of your maf.
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Old 10-15-2012, 05:23 PM   #19
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You could also have a failing sensor for the wideband. So many things could be happening here. Fix the leak and report back, good chance that's the problem.
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