Problem hitting past 4000 rpms

eddyj14 · 01-16-2013, 02:16 PM

Hey guys,

I just picked up my first subie.. It's got a bunch of parts I barely know about.. But my problem is. Whenever I try and hit first gear even second and third past 4000 Rpms it like sputters like the turbo idk if it needs a tune or if the computer has a 2 step or maybe has something to do with turbo timer... Idk
Last owner just replaced the turbo with a new sti turbo.
Any ideas?

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fastblueufo · 01-16-2013, 02:31 PM

Quote:

Originally Posted by eddyj14

Hey guys,

I just picked up my first subie.. It's got a bunch of parts I barely know about.. But my problem is. Whenever I try and hit first gear even second and third past 4000 Rpms it like sputters like the turbo idk if it needs a tune or if the computer has a 2 step or maybe has something to do with turbo timer... Idk
Last owner just replaced the turbo with a new sti turbo.
Any ideas?

Is the engine managed off the stock ecu or a standalone? Could be a number of things. Is there a check engine light? Could be the tgv's are not open. Meed more info.

liltoua · 01-16-2013, 03:15 PM

Two things could be going on, your car is in limb mode. Or you car needs a serious tune if you have lots of upgrades with no tune....ex. upgraded injectors.

eddyj14 · 01-16-2013, 03:30 PM

Yeah there's a check engine light on it...I'm not sure about stock ecu.. It
Might be a stock ecu.. And yeah has new sti turbo pink injectors.. I mean the last owner said it needed a tune to run good it's still drivable but when I try and rev it it sputters so I was just wondering if because of needing a tune or something else... By the way check engine light popped camshaft sensor...knock sensors... And all cylinder misfires... I replaced everything.. It seemed to drive better the spark plugs were bad on it.. But the only thing is reving it hard

liltoua · 01-16-2013, 04:39 PM

If you are running a stock ECU and upgraded injectors, your car is going to break up when reving high, your ECU doesn't know what to do with all that fuel being dumped. Sounds like you need a tune. What year/model do you have?

eddyj14 · 01-16-2013, 05:42 PM

It's a 2004 wrx... The block says ej25 and the heads not sure i think they regular wrx heads

eddyj14 · 01-16-2013, 05:42 PM

And yeah I think I might need a major tune

.. Thanks man hopefully that's what it is

liltoua · 01-17-2013, 01:44 PM

Yea you need to get that thing tuned right away. You are not going to be able to do anything until it gets tuned.

eddyj14 · 01-17-2013, 03:30 PM

Yeah I am.. I'm gonna take it to sti Mickey up in CT

eddyj14 · 01-17-2013, 03:31 PM

Yeah I am.. I'm gonna take it to sti Mickey up in CT thanks for your help man.. I appreciate it ^^^

droned23 · 02-26-2013, 10:56 PM

Hi, I just upgraded to stage 2 cams and cam springs on an 03 wrx that has an intake intercooler race radiator exhaust and rebuilt heads. My engine does the same sputter. I am scheduled for 750ccinj and fuel pump install with a tune. will the tune fix this sputter?

06rexwagon · 03-08-2013, 10:50 PM

Quote:

Originally Posted by droned23

Hi, I just upgraded to stage 2 cams and cam springs on an 03 wrx that has an intake intercooler race radiator exhaust and rebuilt heads. My engine does the same sputter. I am scheduled for 750ccinj and fuel pump install with a tune. will the tune fix this sputter?

Did you set the valve lash on the cams? Sounds like the valves may not be closing fully.

droned23 · 03-12-2013, 04:12 AM

will check but the sputter has stopped for now even under heavier throttle

20BAJA03 · 05-14-2013, 01:50 AM

Check for a vacuum leak... I had a similar problem once and it turned out to be the vacuum hose to the waste gate actuator had become disconnected

01-16-2013, 02:16 PM	#1
eddyj14 Scooby Newbie Member#: 343412 Join Date: Jan 2013	Problem hitting past 4000 rpms Hey guys, I just picked up my first subie.. It's got a bunch of parts I barely know about.. But my problem is. Whenever I try and hit first gear even second and third past 4000 Rpms it like sputters like the turbo idk if it needs a tune or if the computer has a 2 step or maybe has something to do with turbo timer... Idk Last owner just replaced the turbo with a new sti turbo. Any ideas? * Registered users of the site do not see these ads.

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01-16-2013, 03:15 PM	#3
liltoua Scooby Specialist Member#: 206802 Join Date: Mar 2009 Chapter/Region: South East Location: Atlanta Vehicle: 1998 2.5rs Black	Two things could be going on, your car is in limb mode. Or you car needs a serious tune if you have lots of upgrades with no tune....ex. upgraded injectors.

01-16-2013, 03:30 PM	#4
eddyj14 Scooby Newbie Member#: 343412 Join Date: Jan 2013	Yeah there's a check engine light on it...I'm not sure about stock ecu.. It Might be a stock ecu.. And yeah has new sti turbo pink injectors.. I mean the last owner said it needed a tune to run good it's still drivable but when I try and rev it it sputters so I was just wondering if because of needing a tune or something else... By the way check engine light popped camshaft sensor...knock sensors... And all cylinder misfires... I replaced everything.. It seemed to drive better the spark plugs were bad on it.. But the only thing is reving it hard

01-16-2013, 04:39 PM	#5
liltoua Scooby Specialist Member#: 206802 Join Date: Mar 2009 Chapter/Region: South East Location: Atlanta Vehicle: 1998 2.5rs Black	If you are running a stock ECU and upgraded injectors, your car is going to break up when reving high, your ECU doesn't know what to do with all that fuel being dumped. Sounds like you need a tune. What year/model do you have?

01-16-2013, 05:42 PM	#6
eddyj14 Scooby Newbie Member#: 343412 Join Date: Jan 2013	It's a 2004 wrx... The block says ej25 and the heads not sure i think they regular wrx heads

01-17-2013, 01:44 PM	#8
liltoua Scooby Specialist Member#: 206802 Join Date: Mar 2009 Chapter/Region: South East Location: Atlanta Vehicle: 1998 2.5rs Black	Yea you need to get that thing tuned right away. You are not going to be able to do anything until it gets tuned.

01-17-2013, 03:30 PM	#9
eddyj14 Scooby Newbie Member#: 343412 Join Date: Jan 2013	Yeah I am.. I'm gonna take it to sti Mickey up in CT

01-17-2013, 03:31 PM	#10
eddyj14 Scooby Newbie Member#: 343412 Join Date: Jan 2013	Yeah I am.. I'm gonna take it to sti Mickey up in CT thanks for your help man.. I appreciate it ^^^

02-26-2013, 10:56 PM	#11
droned23 Scooby Newbie Member#: 330606 Join Date: Aug 2012 Chapter/Region: SCIC Location: Los Angeles Vehicle: 2003 wrx WRB	Hi, I just upgraded to stage 2 cams and cam springs on an 03 wrx that has an intake intercooler race radiator exhaust and rebuilt heads. My engine does the same sputter. I am scheduled for 750ccinj and fuel pump install with a tune. will the tune fix this sputter?

03-12-2013, 04:12 AM	#13
droned23 Scooby Newbie Member#: 330606 Join Date: Aug 2012 Chapter/Region: SCIC Location: Los Angeles Vehicle: 2003 wrx WRB	will check but the sputter has stopped for now even under heavier throttle

05-14-2013, 01:50 AM	#14
20BAJA03 Scooby Newbie Member#: 340463 Join Date: Dec 2012	Check for a vacuum leak... I had a similar problem once and it turned out to be the vacuum hose to the waste gate actuator had become disconnected