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10-13-2017, 01:33 PM | #1 |
Scooby Newbie
Member#: 468478
Join Date: May 2017
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Help, Low Boost problem stock 02wrx
My boost is getting stuck a little under .05 (7lb) on my boost gauge; it should be going up to .1 (14lb).
Completely stock 2002 Wrx, have a k&n square air intake. 197k on engine. I did a boost leak pressure test and couldn't find any leaks, and already replaced the boost solenoid. The actuator is still good. No codes or engine lights before or after replacing the solenoid. Pill is on the right side. I unplugged the car battery and it kind of fixed the problem for a week. I get full boost when I take the hose off the boost actuator, so the turbo works. I bought a cobb and put a stage 1 tune on it and it still didn't fix the underboosting. I'd say about 75% of the time my boost is stuck at .5 and 25% of the time my boost randomly starts working properly again. So I'm thinking my ECU is limiting my boost for some reason and not giving me any information on it. What data should I be monitoring with my Cobb AP? Also the engine sounds fine, no hard knocking, I check the oil twice a week. Just cleaned the mass airflow sensor. Any help would be appreciated, thanks!
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Last edited by frickgarrett; 10-22-2017 at 04:48 AM. |
11-02-2017, 09:52 PM | #2 |
Scooby Newbie
Member#: 468478
Join Date: May 2017
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SOLVED - dirty oil filter
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12-01-2017, 11:49 PM | #3 |
Scooby Newbie
Member#: 468478
Join Date: May 2017
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12-16-2017, 04:04 AM | #4 |
Scooby Specialist
Member#: 29292
Join Date: Nov 2002
Chapter/Region:
SCIC
Location: Orange County CA
Vehicle:2004 WRX wagon silver |
if you have e85 near you I would put a few gallons in and see if the knock goes away
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