Subaru WRX Forum

Subaru WRX Forum (http://www.wrxtuners.com/forums/)
-   Problem Diagnosis (http://www.wrxtuners.com/forums/f72/)
-   -   Power problems (http://www.wrxtuners.com/forums/f72/power-problems-24979/)

TurboRyan 12-23-2008 12:01 PM

Power problems
 
i have an 02' wrx that is having trouble making power. The car idles fine and drives decent with out boost. When i try getting on it the car bucks at about 2.9k and builds about 8psi to around 4.6k. then any thing after 4.7k rpm's the car doesn't want to accelerate, the rpm's don't climb any higher and it won't build any more boost. It makes a weird sound that is hard to describe, its not healthy sounding to say the least... When the car is in nuetral it revs up to redline no problem and sounds normal. I have no CEL. I have tripled checked all my connections. I replaced all the plugs (old ones looked fine), i replaced the fuel filter, the fuel pump, injectors, restrictor pill (drilled out to #55). Any suggestions of where else to look would be great!
Mods- Big 16g turbo, silicone turbo inlet pipe, STi pink injectors, walbro fuel pump, AEM CAI, 4" catless down pipe, 3" catless TBE, TurboXS-RFL BOV, PDX e-tune w/cobb AP v2.

When a clutch is getting ready to crap out, does it make strange sounds? Could my clutch be slipping?

newtothegame 12-23-2008 06:26 PM

Have you emailed PDX about this also? Are you able to log the car? How long have you had the tune before this started happening?

TurboRyan 12-23-2008 06:32 PM

I have been in touch with PDX, they told me to change the plugs and fuel filter. After that they have been telling me its a boost leak, but if it is i have no clue where it is.... When i try to data log it doesn't work well, because when i try the pull in 3rd from 2k- redline i make it from 2k to about 4.7k before it quits going any higher or faster. Since i don't have a WB 02 sensor the data log doesn't really tell ME much... I have had this problem going on for almost a year now. The tune is only about 3 weeks old....

TurboRyan 12-23-2008 07:49 PM

Would a broken/bad up-pipe cause these symptoms? I have been told it is the cat in my up-pipe causing these problems, BUT i don't want to replace the up-pipe to find out its actually something else.....

turmic 12-23-2008 09:24 PM

What's with the double posts tonight?

But, if you sucked up the cat in the up-pipe. The turbo might be damaged from the shards of cat. Probably should've changed out the UP before the turbo upgrade or did that at the same time.

TurboRyan 12-23-2008 09:47 PM

My bad........
Wouldn't i know if the turbo has been damaged? It seems like the car would drive poorly all the time, rather than just running poor under boost.

awdturb 12-24-2008 12:32 PM

my car was doing the same thing and it ate the up pipe. i got luckey and it was just a huge chunk that clogged up in the up pipe and dident frag up in the turbo.

TurboRyan 12-24-2008 03:57 PM

Did you replace it yourself? What kind of up pipe did you go for? i'm looking at a megan racing flex uppipe, but i'm not sure if its gonna last as long before it starts leaking....

sfelix818 12-25-2008 05:35 PM

Try to clean the MAF. Might just be the MAF acting up from the CAI.

isd_intrepid 12-25-2008 05:43 PM

[QUOTE=TurboRyan;211783] i'm looking at a megan racing flex uppipe, but i'm not sure if its gonna last as long before it starts leaking....[/QUOTE]

I'm running a megan uppipe and haven't had a problem. and the flex makes installation a little easier.

TurboRyan 12-26-2008 10:50 AM

I tried cleaning the MAF, but the previous owner managed to completely strip both screws holding it on. I'm a little afraid to try and drill them out... I plan on ordering a megan catless up pipe, hopefully that will take car of my problem. Should i use the gaskets that come with it or should i order oem from subaru?

tfsa 12-26-2008 11:28 AM

Yeah i have to say sounds like it ate up the cat, my 04 ate the cat as well i had alot of the same promblems you are having u need to check the impeller of your turbo

TurboRyan 12-26-2008 11:40 AM

The lame part is the car is my daily driver so i can't park it and just wait for the up pipe to come in. Hopefully i'm lucky and the turbo hasn't been damaged yet....

isd_intrepid 12-27-2008 11:38 AM

looks like you have a weekend project. when you do replace the uppipe. take the extra steps and pull the turbo and give it a look over just incase. better you find the problem now when your working on it. not when you need the power. also i'd look into getting the MAF replaced. if the screws are stripped. maybe there is damage that is not so obvious.

My megan pipe came with a plug for the EGT sensor bung. its up to you if you put it in. but remember if you take out the EGT sensor your going to throw the CEL code. (if your tuner hasn't disabled the code ). As for the gaskets. the ones you get should be fine.

TurboRyan 12-27-2008 11:44 AM

I ordered the megan flex up pipe yesterday, and also went ahead and bought oem gaskets from subaru. I'm tired of dealing with leaks so i spent extra just to be on the safe side. The only part of the install i'm worried about is lifting the engine the 2". Is that part really necassary? I don't have an air box or heat shields to worry about so that part should be smooth, along with the IC i have taken on and off a thousand times....


All times are GMT -5. The time now is 01:09 AM.

Powered by vBulletin®. Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.

User Alert System provided by Advanced User Tagging v3.0.8pl1 (Lite) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.