Too much smoke. DD2's max, DD1's are a good compromise. IMO.
I have DD1's + VA and can make pretty good smoke, but it runs great. Actually seems better every day. Sometimes I think I could have gone w/ 2's but would have to use alot of care driving it or youll poof out the person behind ya.
There were some pics posted a few months back of DD3's+VA, and a BIG smoke cloud coming out of the pipe. Was way too much.
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2k, 30k miles, QC, SB, 4x, 6sp, 3. 54, 285/75r16 bfg/at, stock air cleaner (reliable), silencer ring "in" (runs better), Sunnybrook 28' fiver, 16,780 lbs. 18mpg (unloaded), 12-14 mpg (loaded). VA, DD1's, PS Boost module & elbow, BD brake... also, Nitrous Oxide piped direct into the block (stealth - to keep the warranty), 10 gallon per minute fuel pump, ECM right out of Don Garlit's Top Fueler (he gave it to me) (for letting him ride in my truck), Super Modified DD1 Injectors ("Hand Honed" with a 1/4" reamer & my 12v Makita).

More BOMBING to come. .