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I am new to the 6.4 world and I am wanting to delete the DPF and EGR. I know that you have to tune it but I am seeing everywhere that they are only race tuners and that you have to run racing fuel on them, how true is this? Also has anyone had a problem with cops or inspections for not having a DPF or EGR tuned etc..thanks
 

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A race tuner is only a race tuner if you use the highest HP tune, unless it IS a race-only tuner (don't know of any). You can run it on the lower HP tunes--and no need for racing fuel.
Do you live in a state that has emissions checks on diesel vehicles? If so, the the tuner won't pass an emissions test.
From the sound of your questions, you really need to read up on the tuner postings on the section just above this one you posted in--6.4L Upgrades and Aftermarket-Engine---before you do ANYthing in the way of adding a tuner.
If you go ahead and put a tuner on it and run it hard, I will just about guarantee a large repair bill in the future...
Joe
 
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