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Old 11-15-2012, 07:23 PM   #51
dmoor AWD
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Default Did this problem get resolved?

Did this problem get resolved? How did you fix it?
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Old 11-15-2012, 08:00 PM   #52
m0nkey
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Quote:
Originally Posted by dmoor AWD View Post
Did this problem get resolved? How did you fix it?
Actually the sputtering was the external wastegate opening and closing due to the unequal length header. This is what my tuner said and in order to get rid of it was to switch to a EL header. I thought i was loosing power but it was a placebo effect.
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Old 07-19-2013, 09:46 AM   #53
aaronlow
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finally after a long while, i found the right workshop which diagnosed the problem correctly.
I changed cyc 1,3 coilpack and it was solved. yippiee.
I could have changed just 1 but since I got 2, the mechanic just put both in.

*high boost high rpm stutters.
if high rpm but no boost - ok
if highboost low rpm - a little stutters.

it is not the fuelpump sock or spark plug or maf or fpr vacuum hose!

the best part - i used non-subaru original coilpack. i bought it off ebay at less than 40usd. (just make them an offer )
http://www.ebay.com/itm/NEW-IGNITION...dbd854&vxp=mtr
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Old 10-12-2013, 10:24 AM   #54
JMlegacy
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those coil packs are not worth it. I bought 4 they only lasted 2 months. The old ones are in again.
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Old 01-12-2014, 02:34 PM   #55
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Is I that connector...... DRL?
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Old 01-17-2014, 08:08 PM   #56
FRC450
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Similar issue.. would get 4 miss fires. Changed out two coil packs with new ones from rock auto. The original OEM coils I never changed started working again. The two new coil packs only throw the errors..
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Old 06-14-2014, 01:35 PM   #57
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Quote:
Originally Posted by JMlegacy View Post
those coil packs are not worth it. I bought 4 they only lasted 2 months. The old ones are in again.
yes u all right. my misfire is back again after 2month !!!
now I am trying to resolve it. borrowed 4 x stock old coilpack and still have issue. gosh!
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Old 06-14-2014, 01:56 PM   #58
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Looks like that random connector might be for the EGT probe, which i imagine if you have an aftermarket DP, you wouldn't be using. At least thats what the EGT connector on mine looks like on an 02 wrx
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Old 06-16-2014, 05:36 PM   #59
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You need to wake up, pull up a chair in front of the car with the hood open.

Don't do anything............just look and think.

You are rattling off countless things that are not installed correctly, or are current issues.

A. Why is your vacuum so high?

B. You already replaced the coil packs with new ones......still get misfires.....so you put the old ones back in.......NO.

C. I bet that oil feed line/ hose to pcv is not the only hosse that is not secure

D. Injectors were leaking....fixed.....how? Did you replace the o rings, are you sure that is the only injector that was leaking?

E. Exactly what bkr7e plug are you using? 11 series......if so it is not going to matter how you gap them as those plugs are for NA subarus.

You need to successfully knock out those questions above.

Also what is that connector leading to....EGT sensor? I hope you have 2.2 khom resistor in the opposite connection because if you don't the ecu is throwing you into limp mode as it is seeing cat deficency.
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Old 06-17-2014, 01:11 AM   #60
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Quote:
Originally Posted by Dr. octagon View Post

Also what is that connector leading to....EGT sensor? I hope you have 2.2 khom resistor in the opposite connection because if you don't the ecu is throwing you into limp mode as it is seeing cat deficiency.
It would take an O2 sensor to see P0420 code (cat efficiency) right?

I understood the EGT signal would set a light but not limp mode. The EGT is not used for tuning and has no effect on it.
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Old 06-17-2014, 07:59 AM   #61
ride5000
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oem egt too high will absolutely limp mode. this is to protect the preturbine cat, the turbo itself, etc.
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Old 10-11-2014, 01:40 AM   #62
ians_wrx
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Just had same issue with my wrx. Yimi sport couldn't figure it out, subaru took 3 days but found one bad coil pack.
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Old 12-02-2014, 07:08 PM   #63
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My wrx is having similar problems out of no where, ever figure out what the problem was?
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Old 12-02-2014, 11:01 PM   #64
EA.Architect
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Default Wrx sputtering hesitation when boosting.

^ looking for any more information on this as well.
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Old 12-03-2014, 01:40 AM   #65
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Just bought a 99 with an 02 WRX swap, and bought it with these boosting/hesitation issues knowing I could track it down... well it turns out it has happened to quite a few of members.

I just cleaned the MAF and replaced the spark plugs with OEM - turns out the plugs in it were gapped .035" or more.... no good. I did a quick reset and went and romped on it - huge improvement but still some hesitation from 3-4000 rpm, then it pushes through, which it wasn't before. Are you truly supposed to let the ECU idle and drive off boost for a while after a reset? (I'm familiar with the GC chassis but new to OBDII turbo motors)

I'm resetting the ECU tonight and am hoping it just needs to relearn the fuel quality to be good to go! I can update in the morning....
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Old 12-29-2014, 08:38 PM   #66
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Quote:
Originally Posted by Natoe View Post
Just bought a 99 with an 02 WRX swap, and bought it with these boosting/hesitation issues knowing I could track it down... well it turns out it has happened to quite a few of members.

I just cleaned the MAF and replaced the spark plugs with OEM - turns out the plugs in it were gapped .035" or more.... no good. I did a quick reset and went and romped on it - huge improvement but still some hesitation from 3-4000 rpm, then it pushes through, which it wasn't before. Are you truly supposed to let the ECU idle and drive off boost for a while after a reset? (I'm familiar with the GC chassis but new to OBDII turbo motors)

I'm resetting the ECU tonight and am hoping it just needs to relearn the fuel quality to be good to go! I can update in the morning....
Resolution anyone?
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Old 12-29-2014, 11:00 PM   #67
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I cleaned the maf and the iacv, replaced the coils, checked the plugs. Nothing worked, but I did notice after cleaning the iacv it sputtered at 5psi instead of 10psi. I'm getting 20hg vac. Next step for me is replacing the turbo, maybe a seal went?
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Old 12-30-2014, 11:05 AM   #68
danger1138
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Quote:
Originally Posted by Natoe View Post
Just bought a 99 with an 02 WRX swap, and bought it with these boosting/hesitation issues knowing I could track it down... well it turns out it has happened to quite a few of members.



I just cleaned the MAF and replaced the spark plugs with OEM - turns out the plugs in it were gapped .035" or more.... no good. I did a quick reset and went and romped on it - huge improvement but still some hesitation from 3-4000 rpm, then it pushes through, which it wasn't before. Are you truly supposed to let the ECU idle and drive off boost for a while after a reset? (I'm familiar with the GC chassis but new to OBDII turbo motors)



I'm resetting the ECU tonight and am hoping it just needs to relearn the fuel quality to be good to go! I can update in the morning....

I would lessen the gap to .025". See if that makes a change.


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Old 12-30-2014, 04:15 PM   #69
spectre153
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Well I talked to a mechanic and he said it sounds like a post turbo boost leak. So I'm searching around that area now...
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Old 12-31-2014, 01:53 PM   #70
Natoe
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Still sputtering issues at 5psi part throttle... seems to be a open to close loop transition issue because full throttle it accelerates perfectly. Need to be able to accelerate without WOT though.... currently no middle ground without hesitation.

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Old 12-31-2014, 01:54 PM   #71
Natoe
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I haven't messed with iacv except for checking for boost leaks, which there were none. Why would the iacv cause this issue at part throttle/closed loop?

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Old 04-26-2015, 10:47 PM   #72
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Hey guys I am having this same problem.

04 wrx.
ELH with meow less upland down pipe. Ewg. Vf39, Sti pink injectors, walbro pump. On the Cobb V3 OTS vfamd pinks map.

Everything was running fine then I went out got on it herd a loud pop and anything after 10 psi makes the ewg opens and close really fast. Car feels smooth but there's no "put you into the seat" anymore. Sent data logs to a few tuners and and log they all say everything looks fine. Randomly my dynamic advance will go off the charts but other than that I'm not getting any feed back knock my pump and injector duty cycles are under 80% I have replaced a lot of hoses smoke tested soapy water tested and I am stumped. Going into changing coil packs and plugs now seeing as how that's what others did.
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Old 04-29-2015, 10:54 AM   #73
WRX WARRIOR
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OK update I changed all the plugs and coil packs. Nothing has changed I'm so lost as to what to do. Can anyone help?
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Old 04-30-2015, 04:17 PM   #74
Natoe
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Do you still have an internal waste gate setup option you could try switching to? You clearly need to diagnose why your ewg is fluttering when it wasn't before. Check the vacuum lines and any solenoids that run to it. Idk why you did coil packs and plugs if your ewg is acting up. I had a loud pop happen when it would spike very lean on a stock tune. Idk what was causing that because with an xpt flash it doesn't happen anymore.
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Old 04-30-2015, 04:19 PM   #75
Natoe
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Something regarding tip in throttle was whack I am guessing... or the CL to OL transition. I don't understand the workings of the ecu very well but yeah....
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