Is it absolutely necessary to remove TMIC to install boost gauge?
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10-26-2012, 10:39 AM
2011 WRX STI
Satin White Pearl
I didnt even touch the TMIC. I just "T"d the vac line by the BPV. Rest of wires went through the drivers fender then down by the ECU with fuse taps. I did use a coat hanger thought and a buddy.
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