due to the flatter torque curve, when discussing RPM ranges that we actually USE
ie: towing / crawlingat certain RPMs the increase due to those flatter curves was substantial, however
Often this means absolutely nothing at all to people who can't get past the thing called max or peak, which changed minimally as the B&G is not intended to provide dramatic peak increases, i want to say the peak increases was something like 8hp and 13 ft/lbs, increases post curve level at some ranges were over 40-50ft/lbs, the torque ramp is also about 28 degrees steeper so you get to the mean peak quicker
however it does unleash the beast when performance add-ons are installed
depending on the year KJ, according to my understanding of the newer ones you may have a combined ecm/tcm, some are separate, but then again my brain does NOT function at 7am
You can achieve increases with Jet2's, you can get increases from aftermarket performance items, however, stock electronics will choke it back and make the vehicle run less efficiently than it did before in most cases, ie: aftermarket throttlebody with stock electronics = runs great, idles like dirt and knocks off (for some), B&G corrects issues like that and actually allows them to provide their intended and unchoked benefit
I can not speak for B&G's performance for towing, I've never towed anything in my KJ other than it's on lead sled.
I've had plenty of regrets in life, buying B&Gs flash wasn't one of them
