RCD 99.5-03 7.3L 66/88 6+6 GTP38 TURBOCHARGER WITH PORTED MAP GROOVERCD 99. 5 03 7. 3L 66 88 6+6 GTP38 TURBOCHARGER WITH PORTED MAP GROOVE We at RCD have always been 7. 3L enthusiasts and this turbo pairs great with a set of Stock injectors all the way up to 238`s This turbo spools close to stock while continuing to breathe up top. Will lower high EGT`s when running a stock turbo with oversize injectors. Will wake up your 7. 3L and unlock the hidden potential it's had. 12 Month no questions asked replacement warranty.