inconsistent acceleration - Subaru WRX Forum
 
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post #1 of 8 Old 03-08-2010, 10:13 PM Thread Starter
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inconsistent acceleration

hey fellas, i have a stock 04 wrx. i know outside temperature has alot to do with boost, but somedays the car feels amazingly strong and fast, the next day similar weather it will feel sluggish....night and day in the difference. my boost gage is ALWAYS reading the same at WOT. any ideas??
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post #2 of 8 Old 03-08-2010, 10:27 PM
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Gas can make a huge difference, but you didn't mention if you had filled up in between. I had to stop getting fuel from a local station that had 93. I found that every time I filled up there I had issues. Even 91 station nearby had better results. Other wise, all I can think of is maybe a bad ground or boos/exhaust leak that gets better when warmed up?

Brad

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post #3 of 8 Old 03-08-2010, 10:35 PM Thread Starter
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i certainly agree with the fuel but i fill up once a week, and the change in acceleration is daily...and i only hit boost when its completely warmed up. had it on a hoist at work, didnt hear or see any exhaust leaks either. the boost leak makes sense but if a had a leak, my boost gage wouldnt be reading the same every day, which it does. im completely stumped....maybe the e.c.u needs a reflash? its temping to just go stage 1 with the access port.
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post #4 of 8 Old 03-08-2010, 10:45 PM
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What kind of gauge, manual or electric? Some aren't accurate enough to see a 1 pound difference.

Brad

AEM CAI, Perrin ELH wrapped, Catted Downpipe, Stage II XPT tune, K4RT30Y STS, lip, shark fin
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post #5 of 8 Old 03-08-2010, 10:49 PM Thread Starter
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mechanical...which technically isnt the highest level of accuracy. the difference really is night and day, so its gotta be more then 1lb of boost...if thats the issue. does the e.c.u reflash make any sense?
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post #6 of 8 Old 03-08-2010, 10:54 PM
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Honestly, I have no idea on this. Remember humidity can be just as effective as temperature in changing power levels.

Brad

AEM CAI, Perrin ELH wrapped, Catted Downpipe, Stage II XPT tune, K4RT30Y STS, lip, shark fin
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post #7 of 8 Old 03-08-2010, 11:01 PM Thread Starter
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your quite right...im not sure how much the humididity fluctuates here....i live about 500 feet from the atlantic ocean lol. i have a friend who works at subaru i will talk to a little more in depth with tomorrow. ill keep you posted, somedays that car puts a great big smile on my face, the next day...not so much lol.
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post #8 of 8 Old 03-08-2010, 11:13 PM
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Hope you get it figured out.

Brad

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