it is a mark d. 93 octane chip for a 1991 318, i used it for a month or 2. reason for selling, i have gone FI and this chip is way too agressive for what ive got going on. i bought it for $200 shipped from a group buy that is no longer open. i will sell for $190 shipped (firm) nothings wrong with it and it did make a huge difference.
thanks
Adam
thanks
Adam

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