I normally run the spartan 250 but since the new update I've been getting the P401 code (fix from spartan on the way I'm told). I bought the whole package deal from Spartan with an AFE intake , delete pipe and their level three tuning so I have the 300/ 310 / 350 tunes. My question is what is the biggest tune I can run on an otherwise stock truck without breaking stuff?? I'm pretty sure my stock tranny wouldn't like the 350 tune but thats just a guess. Any insight would be appreciated. Thanks
The 310 can tear your tranny up pretty good and you run an increased risk of blowing a head gasket, even though its still not likely. For a daily driver tune I wouldnt use anything more then the 275 or 300, use the 310 for occasional fun and dont use the 350 other then maybe trying it out.. it will eat your tranny and its a good idea to have headstuds for that tune.
the 250 tune is a great DD tune. I cant speak for how many people dd this tune, but from reading on here, it appears as if it is one of the most used tunes.
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