I have an re tune dyno appointment April 9th because I am adding 2.395 BP pulley, 127 JLT and duel BAP to my 08 Shelby with a 13 TVS. Recently I only swapped the JLT from a 110 to the larger 127 mm. The filter is all the way out as far as possible as others have suggested. At fire up the idle is poor and rough. After an easy test drive (no boost) it runs great but still has a poor idle. The small pulley and BAP will be installed next weekend.
Is this poor idle issue normal when going to a larger CAI? I'm sure it is correct to assume the 127 needs tuning when moving up from the 110.
My concern is that I have a 45 min drive to the tuner and the original JLT 110 is already sold. Off idle it seems to drive normal as before. Am I OK to drive it easy to the tuner on the 9th?
Is this poor idle issue normal when going to a larger CAI? I'm sure it is correct to assume the 127 needs tuning when moving up from the 110.
My concern is that I have a 45 min drive to the tuner and the original JLT 110 is already sold. Off idle it seems to drive normal as before. Am I OK to drive it easy to the tuner on the 9th?