Power loss - Subaru WRX Forum
 
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#1 Old 03-18-2006, 09:15 AM
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Power loss

Hey all...

The last couple days I've noticed that my car feels like it's losing power. When I accelerate, I can hear the turbo spool, but it seems like it almost hesitates as if the spooled air isn't getting to where it should be. I'm going to reset the ECU to see if that fixes the problem, but does anyone have any ideas? Could it be that in warmer weather I feel more of a surge from the turbo and I'm just not experiencing that in colder weather? Any ideas/help will be appreciated!

In searching the forums, I found this thread, which could explain things:

Power loss

What's weird though is the weather has only been moderatly cold, whereas a couple weeks ago it was freezing and I don't remember having problems. So any input would help.
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#2 Old 03-18-2006, 11:32 AM
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Cold weather should ACTUALLY HELP LIKE THE OTHER POST SAYS. When its cold out my car pulls like a beast. On a really hot day it doesn't quite have the same ummmf.

Big Jae -
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#3 Old 03-18-2006, 02:59 PM
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I agree with bigbadbuddha, the colder, more dense air should give you more power.
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#4 Old 03-18-2006, 05:41 PM
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I know colder weather helps...I was referring to this piece of the post:

Quote:
Originally Posted by jwtarbaj
I could see where it might pull timing in the cold weather.
Could the timing be a factor of what I'm experiencing?
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#5 Old 03-18-2006, 07:25 PM
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I doubt that you're pulling timing in colder weather, it's more than likely happening in warmer conditions. This is why you'd feel the difference in power output. When it comes to turbo engines especially, colder is better.

My car is well, it's like 10 lbs of shit in a 5 lb bag...

<------ Click to see what I'm workin' with. ;)
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#6 Old 03-28-2006, 09:15 AM
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Slightly off topic, but you car actually produces more power on a cold start. It will level out as your engine warms to operating temperature. I just remember reading about that when a car was being dyno'ed or something like that.

Jon
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#7 Old 03-29-2006, 11:06 AM
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I am having the same problem with my 04 WRX. It spools fine early in the revs but as it gets higher in the revs the boot goes down and gets as low as 8lbs near redline. My car is still under warranty it is at the dealership here in Flagstaff, AZ. If they can't find the problem then I am going to take it to Forced Air Technologies in Pheonix, AZ. Check out their web site. www.forcedairtech.com
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#8 Old 03-30-2006, 09:04 AM
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Simple "I lost power" fixes:

Oil Change - Trust me, after a fresh oil change your car just feels better
Premium Gas - Get the good stuff, your car will love you for it
Air Filter - Believe it or not, your car breaths oxygen just like a human being

And if you've done all that and it still feels like you've lost power, then get an EM + TBE and go Stage 2

And to answer the quote below, It's normal for your boost to drop back down near redline.
Quote:
I am having the same problem with my 04 WRX. It spools fine early in the revs but as it gets higher in the revs the boot goes down and gets as low as 8lbs near redline.
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#9 Old 03-31-2006, 11:14 AM
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As i just posted in a nother thread.
The stock turbo does not have enough power at higher rpms. That is why it tapers of at those rpms...
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#10 Old 03-31-2006, 11:56 AM
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do you use a UTEC? I have heard one critisism of piggyback systems is they do not adjust well to temperatures different than they were tuned at.
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#11 Old 04-03-2006, 07:25 PM
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Quote:
Originally Posted by dlh1999
I know colder weather helps...I was referring to this piece of the post:



Could the timing be a factor of what I'm experiencing?
If anything the timing will ramp up uring cold weather and hard driving

"Life's a bowl of punch so go ahead and Spike it!" -311
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