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Old 11-28-2005, 01:50 AM   #1
Blown95ImpalaSS
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Default Weird boost gauge readings or too much boost in the cold?

Ok, so I hit it in 4th gear at about 50 miles per hour. The revs climb and the boost guage (stock) reads over .12 bar at then backs doown quickly to ~.8 bar then rises again to ~.1 bar. I tried it again in 4th and 5th gears, the boost gauge did the exact same thing. When this happens it feels like the car hits brick wall and does not accelerate normally until boost has finally fallen. This only happens in the cold weather and in the upper gears...what the hell is it? How do I get rid of it and hold boost smoothly in the upper gears?

Thanks,
ben

p.s. can anyone give me a whp range for my car as it sits with these mods?

02 wrx wagon
uppipe, tbe/high flow cat, k&N typhoon intake, ecutek tune.
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Old 11-28-2005, 11:44 AM   #2
BoostinEJ20
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whp id guess around 230-240 with that setup.
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Old 11-28-2005, 12:09 PM   #3
KingOfSiam
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That much boost on stage II isn't too much, I'd just be worried about the that it's not steady.
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Old 11-28-2005, 06:34 PM   #4
Blown95ImpalaSS
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There is definitely something wrong. Just tried it again (4th gear) on my way back from class and boost rises then falls sharply then peaks again. *** is going on? Help?

ben
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Old 11-28-2005, 11:24 PM   #5
Blown95ImpalaSS
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Anybody out there? Should I take the car back to my tuner or something? Am I hitting fuel cut??

ben
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Old 11-29-2005, 11:52 AM   #6
ride5000
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take it back to the "tuner" and tell them their boost control tuning isn't worth crap.

i just love all these posts that pop up when the winter comes. i feel sorry for you, ben, cuz it isn't your fault. how much did you pay for that tune, i have to ask?
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Old 11-29-2005, 12:56 PM   #7
REX8
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My boost started fluxing too when it got cold out. Stock EM and with both a TXS and Vishnu Unichip. Not really wure what it is, but I'm trying to work it out.
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Old 11-29-2005, 01:14 PM   #8
dgp2003wrx
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the cold will do that...when it was summer mine would sometime peak at 17-18 psi, with stock turbo(which i know is not good) but now that its winter it peaks at about 20, but i dont get on it enough to see that kinda boost when the snow hits so it doesnt bother me too much, and if the turbo blows oh well...
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Old 11-29-2005, 04:05 PM   #9
Blown95ImpalaSS
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So this is an issue that is not an isolated incident. I payed for my Ecutek license and the tune which came to about $700, but I am afraid a new tune will cost about $200. It only happens when temps reach below 40 degrees, I guess I'll just keep out of the throttle until it warms up. Anyway, if I blow the turbo its a valid excuse to do a vf30 swap

Thanks for all the help,

ben
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Old 11-29-2005, 04:26 PM   #10
neversatisfied
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Lower temperatures might have something to do with it. I know some car's ECUs allow for more boost with cooler intake temps like my SRT-4 does. It definitely sounds like you are hitting fuel cut though. Its not a good idea to put a load on your car in higher gears just for future reference. When you do that your EGTs have got to be going through the roof.
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Old 11-29-2005, 07:12 PM   #11
rugbywrx03
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Denser air = more boost. Cold air is gonna make your ecu have to adjust a lil more than usual. Mine does the same thing but its not a big deal. Be happy the air is cold, your turbo is.
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Old 11-29-2005, 07:15 PM   #12
ride5000
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it is not "isolated," but that doesn't make it right, or normal.
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