I haven't read the entire thread yet, but what I want to know about the XR6T from WSID is the barometric... When I raced a 100% straight from the factory floor BF GT it was at 983, best ET was 14.000 @ 104.26 with a poor 2.12 sixty (driver hesitated on acceleration) and recorded a 1.97 sixty on another run, theoretically all things being equal, let's say that car had a 13.85 in it at that temp.
Two days later at Bluepower we got 248 kw at 986 barometric, which backed up all three drag sectionals mentioned.
Getting back to running it at the drags, I found that:
1- It spun the tyres hard when stalled up beyond 1600 on the startline (have an 18 second slip to prove that)
2- It went a full two tenths slower without the air filter
3- By slamming my right foot down from idle on the line it spun the tyres considerably
4- By launching from idle and feathering the right foot to a certain extent it got off the line much better
5- By trying to stall it beyond 2200 it automatically cut back it's revs and died in the ???? (that is in the
ECU programming)
6- With a 105kg driver and 110 kg passenger it went 14.19 @ 102.7 (2.17 sixty), so hauling 2200+ kgs is still as easy as pie for the BOSS engine.
7- It ran it's best ET's in PERF mode... Shifting sequentially it was a full two tenths slower (but that could be driver's fault).
As for the BF XR6T, I hit the base of a very steep hill in one at 100 km/h in sixth gear (manual) and hit the top of the hill at the same speed, which is an indication that these things have got plenty of torque as well.