DDP 50's are wonderful. I had great mileage and performance with them. I hit 560rwhp with them. They drove great, idled good and no smoke. I just went with the DDP 90's and love them too. Some smoke but great all around. Stay 50's for what you are doing.
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03 SO,BD R-700 TWINS,SMARTY TNT/MP-8,QUAD RPG,ARP STUDS,BANKS COOLER,WATER/METH,CFM+,GRID DELETE,II STAGE 2,II DUAL FEED,DDP 90's,FASS,SUN COAST EXT TRANS KIT,BD FLEX,BD VB,TCS TQ,LOCK-UP, 37's 4:10's, 9/27/08 649RWHP @ LCD.
http://www.youtube.com/watch?v=OecTURtRsEI