Thanks to all that have replied. Sounds like it should be fine for my street driven 340 challenger and the 440 in my truck. Nothing radical in either. One more question- is the Holley system capable of having multiple tunes- say one for cruising in the truck, and another if I am towing something?
The Holley Sniper will allow you to store a bunch of different tunes on the SD card but you have to cycle the key to switch between tunes. You can't switch tunes while driving down the road, you have to turn the engine off, select the tune, load it, cycle the key and then start the engine.
