Well, did the DYNO, unfortunately the guy wasn't able to hook up the lead to the #1 spark plug due to the coil pack, so he did it just on the tumbler, I'm gonna try calling dynojet to see if thats legit.
But for now here are the numbers completely stock at the rear wheels on a DYNOJET 424x...
1st run = 170.11 HP w/air filter box
2nd run = 190.07 HP w/ air filter box
3rd run = 184.30 HP -factory air box removed, straight air
4th run = 191.27 HP -factory air box removed, straight air
5th run = 198.32 HP -air box reconnected
6th run = 187.21 HP -air box reconnected
186.43 avg HP with air filter box
187. 79 avg HP without air filter box
but the huge diff between 170 and 198 is strange, guy stated that it didn't shift right the first time so ruling out the first run equates to...
191.87 avg HP with air filter box
187. 79 avg HP without air filter box
Either way these numbers are well over what I expected out of a 190 HP stock engine with 25% drive terrain loss, or something is very wrong with the test.
Vehicle info:
2000 XJ Classic
4.0L (synthetic oil), 0331 head-newer, without Precats and with Coil-on-Plug
2wd AW4
113,900 miles
VIDEO of the 5th pull
LINK