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I measured on mine and it was around 165 psi but with throttle body open so possibly 120 about right but haven't tried with closed throttle.

Yeah I can't hear any noise from my V6 airbox either,I think the plastic housing dampens the noise quite a bit, fiberglass or carbon would be much better.

Was it fine before? If so probably left something unplugged.

Quite strange,i believe if the orange check engine light doesnt come on at all that means the ecu has no power to it. There is a fuse for the obd port,number 4,just make sure to check it just in case. Also fuse 1 for the ecu. Also double check the relevant fuses in the uch in the engine...

no shouldn't need to,just inspect it (you'll only see the top one) visually and make sure there is no breaks or crumbling apart.

yeah done that before myself,easy to take the manifold out,(just the top part) wouldn't certainly risk it for the sake of 10 minutes it takes to do it

What reader are you using? Even if immobilized it shouldn't prevent you from reading codes.

Are you sure the obd port is not working? Is it keyless? Put it in first gear,foot on the brake,press start button and obd should work,then once connected if you can see any rpm when you crank the crankshaft sensor is working and you don't waste your money.

Any fault codes? engine light on? is it stock?

By the way the throttle body does indeed open all the way so can exclude that.

I came across one of your replies to an old thread and seems like whats happening with mine to be honest lol,did you figure out how the CLiP diag fixed the downstream sensor in the end? I did try running catalyst test with mine but it failed for some reason,will try again anyway. Those fault...

No problem, meanwhile I've tested the 4 wires to the downstream oxygen sensor to ECU and nothing came up

and now i am also getting this fault code in the UPC: (DF008 1 DEF) On my system it comes up as Accelerator pedal position sensor 1 circuit/open,not sure if thats correct.

Yes it is 120 ohm exactly just checked,no changes.

Do you have the wiring diagram for the plug of the downstream oxygen sensor please? This is what the plug looks like:

Spark plugs are actually two years old and maybe 5k miles old,inspected and they visually looked okay, I'll change them soon anyway. There's actually no immobilizer light coming on,only the eml comes on together with the traction control light and it cuts the revs out. I cannot use live data...

Oh I didn't know the second oxygen sensor could affect fueling,I thought it was only there to monitor if the catalyst is working. Yeah Im not sure why the wiring was repaired, previous owner told me they replaced the uch don't why,if I had to bet all they have done was repair these 4 wires and...

Yes indeed,about 4 wires have had a repair on them, although they all feel solid and can't see any breaks.

Yeah I would agree with just fitting another 197 engine in,much easier and cheaper.

I can see on my UPC on the white CT connector there is been previous repairs on both track 4 and 11 wire grey and orange,ABS CAN high signal and Low signal,I will inspect these hopefully will find the problem there,thank you.