When you are talking flush, do you drill and dump the converter & use special blind pop rivet or just dump the 5-7 qts out of pan and refill? Not a full flush & fill. Mine is good, occasional hard shift. But not bad. I would like a 2 inch tecoever as a backup or light duty as compared to the Duramax.

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01Evolve M5 86k silver over black, 02 M5 indi, Dinan, white over caramel 106k. 1991 850i with 66k ttint 72 TA # matching 455HO, with a few tweaks, 06 CCSB 2500 Duramax LBZ with 120 hp efilive tune, 03 CCDRW,LB7 with a 120hp efi live tune 140k. 99 FLHT. 03 FXDWG with 103 in it. 1981 yamaha 850 3cyl. Piped and carbed, cafe in progress. 1997 26' Eliminator eagle, 548 cid BBC built by me. 93mph. Lastly the reason why i am here, 05 x5 4.4. Purchased for pocket change and trailered home.