The old aggressive tune fueled like an on/off switch. I couldn't leave from a stop light without spinning my tires. I think the new aggressive tune is a lot smoother and has a lot stronger mid range. It just seems to really keep pulling now and doesn't want to stop. Mine seems to smoke a lot more with the new aggressive tune too if I'm not careful.

 

Yeah I am running a stack also and with the new aggressive tune I have no bucking anymore but we are talking about the fact the new aggr. tune is much tamer than the old.

 

Hey GFB, what HP rating is your Ottomind? I have a stage 5 Big Hoss (the old style) rated at 160 hp and it really works great in conjunction with the XZT+ but man this new tune is bumming me out.

 

Not sure as the ottomind was sold as part of their package deals. Mine came with the "power pack" which was good for "145 hp"--the reason 145 is in quotes is because they measure the biggest increase on the dyno curve, not the actual peak to peak difference. With the ottomind turned off the dyno dropped 30 hp and 110 ft/lbs.

My truck was not driveable with the old aggressive tune. It was just way too jumpy with these injectors. I think the new tune is stronger overall, but it doesn't have the kung-fu-shred-my-tires response the old one had from a stop.