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Actually, you can contact Donaldson, and they will email the instructions to you. The install is easier without the instructions. I also believe SLP has instructions on their website for the Blackwing. The hardest part is pulling the connector from the MAF.
If you need instructions, IM me and I have a few different ones I can email you. I actually had 6 different ones when I installed mine, but determined the were more complicated than just doing it.
Make sure all of the air ducts are on tight and without any gaps or you will get a rough idle and possible some codes.