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Old 06-20-2012, 07:18 PM   #72
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Join Date: Nov 2006
Location: SC
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WRX VF39+E85 12.0, 121mph


Originally Posted by C J View Post
You think I should ditch the bigger pump and put the 255 back in? When you say mod it what do you mean?

Checked the MAF o ring quite a few times and it appears to be ok.

What are some symptoms of the front o2 failing?

Maybe someday I would like to switch over and go SD but right now I would like to just get it running on the MAF. Hopefully once we move the MAF down into the fender it will fix any MAF problems.
By modding the pump I mean crushing the pressure relief valve. It would be like trying a third pump since it will flow more than a stock 255lph; I would do this just to rule out the pump without having to buying a new pump.
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