HPS, Kennedy is absolutely someone you can trust to get you the tune your vehicle needs. He's never steared me wrong. As far as the glow plugs, this has been the warmest winter on record so I look at it this way. The money you save on fuel with JK's tune can go for new glow plugs next fall. Fuel prices aren't going down anytime soon.
02 2500HD LT D/A SB CC 4X4 BLACK, Westin stainless nerf bars, BW GN Hitch,Racor 60S post oem fuel filter, Oil Guard bypass engine oil Filter. All synthetic fluids. Kennedy boost valve, edge, Modified air intake,EGT & Boost digital gauge,TransferFlow combo fuel & tool box, Air Lift Suspesion Bags Rear & compressor with remote, Bilsteins front & rear, Frontier front replacement bumper.