hi,i install the msd chip,lambda sensor,TPS(PF09) in 2wd car and wiring loom(L6),now i have L8 ecu,all perfect expect the idle speed valve,when i connect the idle valve plug then the rpm's is under 4000rpm maybe more,what's happen?
do you know anybody?
thanks a lot.

 

your question isnt as clear as it could be , do u mean the engine wont rev past 4000rpm ? also if your loo m is level 6 ,does it mate up too a l8 tps ?

 

have you swapped the wiring on the loom? Top and bottom wires on tps plug must be swapped when going from l6 to l8, as above question isnt 100% clear