Thread: No power!?!

Get tuned man or find someone that can do it.

Depending on where that 870 reading was taken. Should be WOT, then 870 would be considered...about to pop a piston lean. 870 isn't rich at all. And yet.. I may be lying to you, because a narrow band reading is darn near the most inaccurate reading our cars can give us. A wideband is the only real way to know what your fueling is doing.