Engine/Power - EJ25T (STI and 2006+ WRX) Discussions about the USDM 2006+ WRX and WRX STi 2.5 liter turbo flat-four.

White Smoke during heavy acceleration

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Old 06-27-2011, 03:51 PM
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Car Info: 2011 Subaru STI Hatch
White Smoke during heavy acceleration

so i just just put on the Perrin catback exhaust on my '11 STi and attempted to install an older model STi DP but was too short. after re-installing everything i noticed i was getting turbo whine and a white hazy smoke under hard acceleration and pulled over to check it out and noticed the wastegate wasnt tightened down. i retightened that and got rid of the turbo whine but still have smoke. i thought it was a coolant problem but i dont have that sweet smell you normally get when burning coolant.

Does anyone have an idea what my problem might be i would really appreciate the help.


Mods: Perrin catback and Stage 1 Tune(Cobb)
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Old 06-28-2011, 10:03 AM
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Is the catback brand new or used? If its brand new, its likely just the packing material breaking in.

-- Ed
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Old 06-28-2011, 03:28 PM
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yeah thats what i thought i found out that the v-clamp holding the s pipe to the mid pipe snapped the clamp on the left rear boot for the differential and dumped a bunch of grease/ oil on the exhaust so thats all fixed now. thanks for the suggestion though
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