Info on C&L MAF w/ inlet tube and Predator Tuner...
I have the C & L kit and when running the Predator "Performance" tune I was pinging some at 3800 - 4200 rpms in third gear (just after the 2-3 shift). I have been running the stock tune (with the timing advanced) to prevent it but recently added 3.73 gears. Because it was only occuring in 3rd through that rpm range I thought it might have been due to the load under those particular circumstances with the MAF / Predator combination. Last night I re-loaded the performance tune and maxed the timing to test it out (hoping the gears have changed the load). No more pinging under WOT up through redline in 1 - 3 and up to 5k in 4th.
I don't know if my theory was proven or if it is just due to other variables beyond me, but it seems to be running well. Now I just need to get it dyno'd again.