In as few words as possible, I installed a RIPP SC in my 2013 JKR last Feb and am getting check engine light codes P..171 and P..174 codes when in 4L and crawling. The new software tune which came from RIPP with my unit and Diablo tuner was installed and since then in attempts to address the issue I have had three additional tunes custom made by an Alabama speed shop and at least one more from RIPP. None have corrected my issue, so we recently looked into possible mechanical issues, principally exhaust leaks. None found and even replaced upper plenum gaskets.
On a typical off-road ride the codes will throw three or four times, sometimes immediately, sometimes an hour later. I clear them and continue without trouble but they always reappear with no apparent reason. When thrown, the 171 code always appears, sometimes alone, but 90% of the time with the additional 174 code. I realize these indicate two different cylinder banks but my shop and I are kind of at wits-end. Hate to start just replacing parts and sensors like the O-2 etc with no reason. No engine code issues before RIPP installed. Both RIPP, Diablo and the speed shop consulted multiple times with no relief.
So do any of you have experience that might help me get a handle on this? I'm mechanically "challenged" so hoping to generate something to get the shop to explore. I feel the issue is mechanical rather than related to re-tune software; just a hunch based on the many attempts to re-tune.
2013 JKR, Auto, Yukon 4.56, Goodyear MTR/K 35/12.5/17 on XD222 KMC Enduro Beadlocks,Teraflex Big Brakes & Spare Carrier, Warn RC Winch, Metalcloak Front & Rear Bumpers, Metalcloak Overliner Flares & Front Inner Fenders w/ Corner Guards/Tail Lamps, Metalcloak Game Changer 2.5" w/6-Pac's, ARB Diff Covers & Onboard Air, AFE High Tuck Muffler, Front Lower Control Arm Skids, Artec Aluminum Skid System, Poison Spyder Hood Vents, Ripp SC.
There are no winners here; just beguiled participants
Last edited by ratchettt; 12-17-2017 at 11:59 AM.