Help...subie Crisis!!!

[WRX8urVTECH]

Im not sure whats wrong with my 04 wrx...when I get on it subie is fine but around 4000-4500 it feels like there is no power and then once I hit 5000 it goes away....WHAT THE HECK??? Maybe somethin to do with the wastegate??

[tayhadar1]

What kind of engine management are you using?

[Z3RO]

turbo lag?

[WRX8urVTECH]

Ya thats what I thought at first but....if it truly was turbo lag wouldnt it be at the beginning??...i mean it wouldnt lag right in the middle???

[06wrx4me]

You are running a vf39 turbo with no EM thats why your car is goin nutz. Your ECU is probably sensing a knock and retarding your boost. You can't just throw on a huge turbo with no EM! Not to mention god knows if you have the right restrictor pill size. Park the car and buy EM or swap on the stock turbo until the engine management.

[tayhadar1]

+1 to the above, I thought about that when I first read your mods now I think you are crazy. Not changing EM when changing a turbo

Thing probably runs like crap

[302@12psi]

You arent using EM?

[06wrx4me]

You arent using EM?

Date of Birth:
February 17, 1988
Age:
19
Your Vehicle(s):
04 WRX
Location:
Moreno Valley
Estimated HP:
345ish ???
Engine/Transmission mods:
k&n intake, exedy clutch, megan turbo back, swapped STi turbo :-) workin on a few other things right now...
Suspension/Wheels mods:
all stock...have to keep the sleeper status w/ those arrogant ricers
Interior/Exterior/Accessories:
momo wheel...
Future plans:
savin for a chip...200 short so in a week or 2 i should have it, it will be SICK, then tires and wheels...not too sure which i want yet
Gender:
Female
Your Name:
Natassia

[06wrx4me]

2.0l with TBE and VF39 with no EM FTL!

[302@12psi]

2.0l with TBE and VF39 with no EM FTL!

Jesus...well without EM the reason you are feeling the hestatation is probaly due to the OL/CL switch going on. And the vf-39 just exploits it. I wouldnt drive the car in boost (or at all if you can) without getting EM.

[WRX8urVTECH]

Took a while but stock turbo is back in....running ok so far(didnt run like **** to begin with...just the lag at 4500). What would I do without you guys...LOTSA LOVE!!! Strange thing tho...ive had the other turbo in for about 9mo...and when i 1st got it, well we all know how drivin goes w/ new mods...nothin was wrong until now...and i havent even been pushin it like i used to...

[06wrx4me]

Took a while but stock turbo is back in....running ok so far(didnt run like **** to begin with...just the lag at 4500). What would I do without you guys...LOTSA LOVE!!! Strange thing tho...ive had the other turbo in for about 9mo...and when i 1st got it, well we all know how drivin goes w/ new mods...nothin was wrong until now...and i havent even been pushin it like i used to...

I'm scared that you might have caused permanent harm to your engine NAT.

I would pull all the spark plugs and do a compression test. If you were pushing that setup hard with no EM, detonation was almost certainly occuring. I fear we might not have helped you in time.

EDIT:

Did you reset your ECU after reinstalling TD04 turbo? If you didnt do it now.

[WRX8urVTECH]

Spark plugs changed this morning...to be exact it was about 2 hr ago...and it was reset...

Subie wasnt a daily driver until 1mo ago...took it out every once in a while maybe 2x a week at MOST...and it was to go get dinner, around the block kinda bs...

[06wrx4me]

Spark plugs changed this morning...to be exact it was about 2 hr ago...and it was reset...

Subie wasnt a daily driver until 1mo ago...took it out every once in a while maybe 2x a week at MOST...and it was to go get dinner, around the block kinda bs...

Still dying up top 4500RPM's?

Shoulda done a compression test while you were there.

You inspect your IC hoses when they were off?

[WRX8urVTECH]

uh...didnt do that...might need some help as far as that goes, but i got on the freeway to go to school and tested it all out, no weird sounds or sh** and didnt bog out at 4500