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Well guys, we finally found the problem, it was two problems. This PCM and this car did not belong together, we tried a new PCM and that didn't work either as you have heard, so I took a stock file...

Thanks for your help, we've tried this file and have discovered that it is doing the same thing,
so we installed a new PCM and a new operating system and tried to write entire, same issue.
we will...

Wow, that's incredible, when I get back to the shop I'll do it, I'll post here the results, thank you so much!

That's what I would think too, however, I looked at the tables, and I am lowering the values, as you can see in the tune files, and then I make a run or just driving on the dyno at part throttle and...

I know I cannot believe the ignition timing is still taking it, I don't get any knock and I have knocked it before so I know the knock sensor is working, it only knocked and tip in at low idle and...

also, I just let the IAT cool down as it is one of these DIY cold air intakes behind the radiator,
I did a log with a WOT pull again. the correction factors are pretty close here. except at WOT. I'm...

I am sure it is a user error.
That's why I asked if someone could do a remote tune for me and this customer.
attached are the file that is in the PCM now
and the last three logs so you can see the...

OK, guys, this is seriously crazy,
1st
I never mentioned that I did not need a license to edit this file
yes, most of the changes I make stick, and the feedback is correct, such as ignition timing...

Shazam, finally

I searched 12 vehicles to find one with Flex-enabled

does this look correct?

139567

also, just found this tidbit

states that the 33lbs is at 50psi or there about because the flex fuel trucks have a return fuel system and we are at 58psi with a returnless, apparently there is an...

YES I AM, I was looking for a PID that might point to a solution, it's funny if I log one more PID the entire trace slows way down. LOL.
just learning this stuff on HP tuners. I wanted to see what...

yes sir, it is at 60psi, steady through all loads

Well, I received this 1967 GTO with what was supposed to be a built 5.3 ls, headers cam and I have no info from the customer as he bought the car as is and the engine builder/tuner will not respond...

This is the pin 45 I was referencing.
see image(attached pdf)
again, this is a PSI harness that is not supplied with the pin 17 ac request wire, or the associated pressure sensor/relay wiring, I...

this is the pin 45 I mentioned
see image (attached)

139170


139169

sorry for the long delay.
yes, I tested with resistors
no the PID does not read in the scanner as you can see in the log file
the wiring harness is from PSI, they do not share wiring diagrams,...

copy
what I meant to say was
I did not try a relay,
I checked the output of the pin and it is always ground ( with a Multimeter)

yes sir, however, pin 45 C1 does not have reference voltage of 5v, and the pin 14 C2 does? coming put of the ECU,

question does the ecu actually hac=ve to see the resistance from the AC relay, I...

can someone please look at my files and see if I have something set incorrectly

no luck, just tried that
I am getting no;
ac pressure volts
ac clutch engaged = no
ac active = no

thanks guys, I'm not giving up and I will post the answer, once we find it!

PSI says that 1000's of customers have had no issue?
however, there are hundreds of threads about this, and no one post the answer

I did not log pressure as I do not have a pressure switch in this PSI harness, they say "you don't need it" however it looks like you do?

also, I logged clutch engaged signal and it never shows yes

yes, the ac request comes on in the scanner when I add voltage to pin 17
and clutch signal to 18
but the target idle does not change and the car suffers rpm's

I have a 2000 Camaro tune in a LS Swap Jaguar XJS.
The AC request comes in on pin 17 C2
the clutch signal comes in on pin 18 C2
The AC request shows in the scanner
no change in target idle
ac...