Diablosport Forums

My U7135 Predator will be in on Monday. My 2010 Challenger 5.7 is an automatic with the only mods being a Flowmaster catback, an oem replacement K&N air filter and a stock SRT8 intake elbow. I plan to use the 91 octane tune. Should I use the regular 91 tune or the 91 CAI tune since I got the filter and non-restricted intake elbow?

Personally, I'd go with the 91 CAI tune. The difference between the two is the CAI tune adds a little more fuel over the non-CAI.

I have the o9 5.7 auto 306 rear, ours are clost to same I did the following and my results are as follows. C & L cai, super 44 flowmaster mid way and went with 12in straight through glasspack out back. All is 2.25inch even mufflers. Kept the X pipe in place. Little loud for me without the 12in packs out back. Catch can, and D S 91 tune with 4 to 8 % fuel added. using 94 oct sunnco fuel. Have No timing issues. I logg data alot also. Follow D S instructions carfully. I do have some mds smooth problems. I know what to do just havent done it. Its shut off for now.
Last week put the car on the drums, dynojet,, and I pulled 338hp rw and 387ftpd tq. (wish i dynoed, before the mods, dahhh)
At the track when it was stock car would run 13.70ssz good tires. at the track after slight mods end summer track ran 13.38
Problem at track I hold key to the start when moving, to shut off, total esp traction control. some times canot get moving fast enough though...good luck

Thanks for the input!