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Old 05-28-2013, 03:01 AM   #1
BeardedShogun
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Default 07' wrx won't rev past 4000

I've done my research on this matter, but I feel like I need more opinions and help on dealing with this.

Problem is, when I try to put my foot down and give it an aggressive amount of throttle, I get hesitation and finally I hit a wall at around 4-4.5k depending on gear.
only started happening after flashing to stage 1

Currently the only mods I have:
Cobb SF intake
Cobb AP stage 1 93

other than that car is bone stock.

At first I believed it was due to the intake, maybe a ratio problem, replaced it with the factory filter and still had the same problem.

Made sure my launch control and flat foot settings on the accessport were well beyond redline, still the problem occurred.

So far the only solution I have to get around this is to return to stock through the AP and uninstall, as the problem seems to go away when I do that.


Any suggestions?
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Last edited by BeardedShogun; 06-06-2013 at 04:19 PM.
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Old 05-28-2013, 03:06 AM   #2
BeefCurtains64
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Try your rev limiter .... just a hint or Stg 1 w/ Cobb intake ... map
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Old 05-28-2013, 03:06 AM   #3
TW0P0INTSL0W
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Does it do it while moving? Or just at a standstill
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Old 05-28-2013, 03:50 AM   #4
BeardedShogun
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Quote:
Originally Posted by TW0P0INTSL0W View Post
Does it do it while moving? Or just at a standstill
Just moving.
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Old 05-28-2013, 03:52 AM   #5
rob1n1
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It could be that your AP is in Valet Mode.

See a related thread here: http://forums.nasioc.com/forums/showthread.php?t=542173

You're going to want to look in the AP manual for instructions on how to turn it off or make sure it's off.
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Old 05-28-2013, 04:01 AM   #6
BeardedShogun
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Quote:
Originally Posted by rob1n1 View Post
It could be that your AP is in Valet Mode.

See a related thread here: http://forums.nasioc.com/forums/showthread.php?t=542173

You're going to want to look in the AP manual for instructions on how to turn it off or make sure it's off.


Will definitely try that.
Thanks for the suggestion.
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Old 05-28-2013, 08:16 AM   #7
Cathexis
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What does your AP say max boost is when you hit the cut at 4000?
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Old 05-28-2013, 08:56 PM   #8
Haelan
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Shot in the dark, but the green test connectors need to be disconnected when you're done flashing with the AP.
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Old 05-28-2013, 09:14 PM   #9
nsbat7
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check your food down shift setting on your AP...
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Old 05-28-2013, 09:17 PM   #10
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Quote:
Originally Posted by nsbat7 View Post
check your food down shift setting on your AP...
if is doing it with the clutch down only...

Last edited by nsbat7; 05-28-2013 at 09:49 PM.
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Old 06-06-2013, 04:18 PM   #11
BeardedShogun
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quick update:

tried cleaning the fuel systems/injectors, no luck there

updated my AP, flashed, and reflashed, no luck

cleaned MAF sensor, still won't let me rev past, and still have hesitation.


next step: replacing and cleaning spark plugs and injectors, anyone who's had this problem it'd be great if you could chime in to let me know I'm on the right track.


Thanks to everyone
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Old 06-06-2013, 06:46 PM   #12
TW0P0INTSL0W
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Quote:
Originally Posted by BeardedShogun View Post
quick update:

tried cleaning the fuel systems/injectors, no luck there

updated my AP, flashed, and reflashed, no luck

cleaned MAF sensor, still won't let me rev past, and still have hesitation.

next step: replacing and cleaning spark plugs and injectors, anyone who's had this problem it'd be great if you could chime in to let me know I'm on the right track.

Thanks to everyone
Check the green test connectors before you do the injectors and spark plugs. Try checking all hoses in the intake tract. I had a tmic hose loose and id cut out at 4000. One day it popped off. Got it back on and never had the problem again.
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Old 06-06-2013, 07:14 PM   #13
s0ber_p
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Quote:
Originally Posted by BeardedShogun View Post
quick update:

tried cleaning the fuel systems/injectors, no luck there

updated my AP, flashed, and reflashed, no luck

cleaned MAF sensor, still won't let me rev past, and still have hesitation.


next step: replacing and cleaning spark plugs and injectors, anyone who's had this problem it'd be great if you could chime in to let me know I'm on the right track.


Thanks to everyone
CEL, flashing or otherwise?
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Old 06-06-2013, 10:26 PM   #14
coalslaw
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only common flashin cruise light wud be p2443 for hwkE
flashing CEL is serious trobel
+1 valet mode
+1 re do green connector test. windows closed doors closed when flashing
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Old 06-07-2013, 09:18 PM   #15
BeardedShogun
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No CEL flashing.
Which only helps to add to the frustration haha.
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Old 06-07-2013, 11:27 PM   #16
VictorOfHavoc
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Quote:
Originally Posted by BeardedShogun View Post
No CEL flashing.
Which only helps to add to the frustration haha.
Did you ever get a chance to check those green test connectors people mentioned? I had an issue and it was related to my flat foot shift rpm being too close to my launch control rpm...try setting lc to 4500 and ffs to 5500 and see what happens. Then again I'm open source so it might be different...But when I did set them both above redline it kept happening...
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Old 06-09-2013, 02:07 AM   #17
BeardedShogun
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I did.

My test connectors are always unplugged when not flashing maps.
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Old 06-09-2013, 02:14 AM   #18
VictorOfHavoc
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Quote:
Originally Posted by BeardedShogun View Post
I did.

My test connectors are always unplugged when not flashing maps.
good good. Did you try what I mentioned with ffs and lc? my car/ecu is newer so it might be different but it might be causing the issue...
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Old 06-09-2013, 08:47 AM   #19
STIBungy
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If its starting to hesitate before 4k, then its not an issue with connectors, ffs, lc, etc. Find someone with a wideband and/or datalogger.
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Old 06-09-2013, 05:22 PM   #20
danger1138
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I got that symptom when my intercooler coupler popped off the throttle body. Check that out if u haven't already.
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Old 06-10-2013, 02:03 AM   #21
BeardedShogun
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Quote:
Originally Posted by VictorOfHavoc View Post
good good. Did you try what I mentioned with ffs and lc? my car/ecu is newer so it might be different but it might be causing the issue...
I did. No luck there.




Tomorrow I'm going to log it with my AP when I get out of class, probably something I should have done in the beginning, hopefully that'll clear up what I need to do.


I appreciate everyone's help again!
Keep the suggestions coming, they may mean more to me than you think
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Old 06-10-2013, 08:22 AM   #22
Cathexis
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Upload log to google docs, make public, and post link here.
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Old 06-12-2013, 01:24 AM   #23
BeardedShogun
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Here it is.
Bear with me, I'm pretty sure log would need more paremeters, etc.

https://docs.google.com/spreadsheet/...EE&usp=sharing
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Old 06-12-2013, 12:50 PM   #24
sc00ter
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According to those logs your RPM's are getting well past 4K (up to like 5800rpm before you let off the throttle). What's really concerning is that you are hitting boost of up to 23psi. If your mod list is correct and you are running a stock or stage 1 tune with the TD04 then you are WAY overboosting.

Are you 100% positive of your current mod list? Especially the turbo?
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Old 06-12-2013, 01:23 PM   #25
BeardedShogun
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Quote:
Originally Posted by sc00ter View Post
According to those logs your RPM's are getting well past 4K (up to like 5800rpm before you let off the throttle). What's really concerning is that you are hitting boost of up to 23psi. If your mod list is correct and you are running a stock or stage 1 tune with the TD04 then you are WAY overboosting.

Are you 100% positive of your current mod list? Especially the turbo?
The RPM wall per say is never one strict number, sometimes I'd hit it at 4k sometimes 5k
But one thing for sure I'd get plenty of hesitation along the way.


And yes. I'm positive on that. The car is completely stock aside from the stage 1 ots map and a Cobb sf intake.

If I'm overboosting that's news to me. :/
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