Timing Issues Rb25det S1

[GT500_Racer]

Hey guys so i finally had time to put a timing gun onto the engine after 20000kms of use since i last did a timing belt swap, wen i last did it, every thing aligned perfectly, even after spinning the crank by hand 3-6 times the alignment is spot on, back than i was lazy to put a timing light on after the belt

So heres where the problem starts, Ive never touched the CAS till today, besides pulling it out to remove it for a t-belt swap..... When i put the gun on the Timing marks on the crank read 0 - 5, jumping... which to me isnt right.... BUT the car is boosting good at 12 psi... runs fine, feels like 200rwkw should feel

The original CAS settings was maxed out to the left from the previous owner, im not sure why.. but maybe has something to do with this lol

Im getting the timing by using a spark plug lead, going from coilpack to spark plug to get the signal

when i change the timing to 15 degrees as per the manual, TPS unplugged and idling @ 850rpm, on boost it feels like it has zero power, almost like it doesnt wanna boost at all, but my boost gauge tells me it is, im at a lost here....

Im gonna pull the timing cover off again an double check again... everything....

[89CAL]

Is this with standard ECU? It will not like 12psi at all

[GT500_Racer]

Car came with a K's Rom chipped ecu, so its fine to handle higher boost

[Duncan]

it sounds to me like it's been a tooth out all along. if you have the belt off now time to double check it all.