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Old 04-07-2009, 11:55 PM   #1
Scooby Guru
Member#: 70710
Join Date: Sep 2004
Chapter/Region: Tri-State
Location: Quakertown/AREA1320 391whp
2002 04STi Swaped RS
w/PPGS & 02 Wagon w/PPGs

Default What coil to use?? 04 Impreza -i or 91 Legacy SS

Im in the final stages of my 91 Legacy SS rebuild/Frankenstein conversion and I have a question on coil packs.

To explain quickly the build consists of a 91 Leg SS short block-ECU-harness with 04 Impreza-i heads. I know I need 04 Impreza-i wires to get down to the spark plugs, but the spark plug wires are not compatible to the 91 Leg coil pack. Do I go with a new 91 leg coil and convert the wires "plug side" or the 04 Impreza-i coil pack and convert the wires "coil side"? I am under the impression the older subaru's have an igniter system and the newer ones do not. I have thought of a 3rd possibility of creating some sort of connection adaptor for the 91 coil to 04 wire but would rather do it right than rigged.

link to 91 Legacy SS build

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