Duramax Lifetime Supporter
Join Date: Aug 2008
Location: Fargo, ND
if its an LB7 you got to ge a high idle kit. the Dmax is the wort heat building machine at idle out there. cold in winter. high indle my pick will sit aroung 185 temp at idle, with out it it baily made it above 160
03 EC/LB LB7: EFI LIVE, S&B intake, 5" DE, ATS manifolds and up pipes, Stock turbo (for 1 more weeks), airdog 150, pieced together trans, sleeve (trac bars and centerlink soon), 8" rear air bags-overload springs+2" blocks, bilstein 5100 shocks, leveled, nitto 285/75/17's and BFG KM2 255/85/16's for winter.