Who sells a tuner for 2005 SRT10 that does NOT have cats?

Ive got plenty of oil in my Evans coolant. I havent dived into the fiche, yet. Im anxious and thought I would ask the forum what I should look for first. I dont find any oil anywhere on the block. Any chance its water pump seal or something? 😢

I’ve seen or read members using different tuners they have purchased for our trucks. Anyone got a favorite? thz

All parts have 5 to10,000 miles on them..... AirBox, Front Springs, Rear Shocks, Coils with wires and plugs, New Air Control Valve, Shifter, 2 New Viper Oil Filters, Complete Stock Exhaust with Cats, Stock Cam, 4.10 Gears, Damper Pulley and Belt, Front License Plate Holder still in the bag and a...

2005 QC Recently changed to forged pistons, new rods, rockers etc. plus changed thermostat to 170. I feel it needs to be tuned. Don’t know anything about tuning and how to find someone who does. Are there “tuners” for these cards. Bottom line I need to learn the ins and outs of tuning our...