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View Full Version : Where's mah A/C Pressure Sensor


[ion] C2
07-29-2008, 07:35 AM
I don't feel like looking for it and guessing. Any A/C system or electrical diagrams showing where this thing is? I gotta tap my wideband into it in order to get a reading using standard HPTuners (which doesn't have a designated input for wideband, so you have to use an existing useless 0-5v sensor wire and trick it.)

Much appreciated.

BTW HPTuners is awesome. On a WOT pull 0-50 I get:

Fuel Economy: 1-2 MPG (Custom PID, pretty sweet gives you real time MPG)
Shift point: 6200 RPM (for those who thought it was 6250, 6400, etc.)
Boost: 7.3 PSI (likely around 8 in a higher gear, don't really want to push it)
Injector Duty Cycle: 93% (O_O gotta get those LSJ 378cc ones in there soon)

[ion] C2
07-29-2008, 09:34 AM
Answer from a guy on j-body: "It is on the passenger side under the radiator support brace."

Cliff8928
07-30-2008, 01:58 AM
You couldn't use the '99 EGR wires? too bad.

Did you get that problem resolved with the HPT support?

[ion] C2
07-30-2008, 06:30 AM
I don't feel like finding the ECU and getting a connector to connect to a pin on there. I'd rather simply use a tap splice into the A/C line like most do, I have HPTuners all set up for it already, just gotta tap it. Heheh.

They told me they'll include it in the next compile, probably next week. I've been editing things though, raised the speed limiter to 255MPH, changed the target AFR under PE to 11.8 rather than 13.0. Once I put the LSJ injectors in I know what number to put in for the constant to make things run exactly the same but with far less duty cycle (93% atm, bad).

w00t

01silveralero
07-30-2008, 09:00 AM
C2;375012']I've been editing things though, raised the speed limiter to 255MPH

w00t

255mph :emotlol: :emotlol:

[ion] C2
07-30-2008, 09:13 AM
it's the max value lol, in reverse it's defaulted at 26MPH, not sure why anyone would go that fast backwards

01silveralero
07-30-2008, 09:32 AM
C2;375043']it's the max value lol, in reverse it's defaulted at 26MPH, not sure why anyone would go that fast backwards

should be 256 since everything is usually based of 2^8 which is 256. but i guess they consider 0-255 so whatever.

cherrington17
07-30-2008, 09:43 AM
C2;375043']it's the max value lol, in reverse it's defaulted at 26MPH, not sure why anyone would go that fast backwards


you mean you DON'T go that fast backwards??

[ion] C2
07-30-2008, 10:11 AM
should be 256 since everything is usually based of 2^8 which is 256. but i guess they consider 0-255 so whatever.
256 does something weird, it's used to like reset the values or something in most tables

255 is the max value in RGB codes too

Cliff8928
07-30-2008, 12:50 PM
Geez, there's 256 vaules, but 0 is included so it only goes to 255.

Oh, I have some pins and wire for the PCM connectors in the garage. The PCM is right above the kick panel on the drivers side.

[ion] C2
07-30-2008, 12:52 PM
Hm... I'll have to see if this A/C way works first since I nearly have it completely set up.

01silveralero
07-30-2008, 03:50 PM
Geez, there's 256 vaules, but 0 is included so it only goes to 255.

Oh, I have some pins and wire for the PCM connectors in the garage. The PCM is right above the kick panel on the drivers side.

thats exactly what i was saying..........