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2016 Suburban
OS 12672612

P012B, P0101 and P1101 are all enabled to set on 2nd error. None are triggering.

Very cool discovery!

I haven't had any codes pop up with the SCIAP retrofitted in, and the PID reads correctly in the scanner, but I'm interested to dig in further.

No, nothing different that may affect SCIAP performance. All the main settings are correct.

Under Engine Diag->Airflow->Supercharger Inlet Air Pressure, your High Volt Test & Low Volt Test are both correctly set to Enable.

I missed this initially when I did the install and it wasn't...

After installing the SCIAP sensor I had to run Repoll For Supported Parameters in the scanner for it to display.

Sorry for the late reply, Alvin. Please see attached. Quick log of idle and into some boost.

2016 Suburban, L83, SCIAP pressure and voltage recorded in the log.

I used the stock MAP sensor from my Suburban.

GM 12644226

I hit up a local junkyard and clipped off an ECM connector from a wrecked '16 Impala. De-pinned the connector and had 6"-8" of wire to solder to.

I'm running a Whipple on a 5.3L, so not totally apples to apples as this thread is about a Magnusson.

My SCIAP sensor is plumbed into one of the ports on the supercharger housing just past the...

Just buttoned this up over the weekend. This is on a 2016 Suburban, L83 5.3L. SCIAP sensor is in and functioning as expected.

I can echo castorjames results. The addition of an SCIAP sensor and...

Just re-read previous posts, and I think I got it.

TIAP moves from Pin 4, X1 plug into Pin 45, X2 plug. SCIAP goes into Pin 4, X1 plug.

Correct?

5V power and ground for the SCIAP?

I'd like confirmation before I open up the ECM harness.

On an L83 ECM, does the added SCIAP sensor signal wire replace Pin 4, X1 plug (where the TIAP sensor signal currently resides) or insert...

Ground straps on the back of the cylinder heads connected?

Which pins on the ECM are you using for SCIAP and MAP?

And now you DEFINITELY have my attention!

Whipple PD blower on an L83.

I've been chasing an annoying issue at 30%-40% accelerator pedal position during steady state cruise. A light load will...

Sorry you had to go through all that just to end up where so many of us have already been: a failed DOD lifter.

I'm running the Gwatney Performance Stg 1 truck cam and absolutely love it. Super...

I used the Linginfelter injector calibration files as a template for which LT4 injector tables to copy over.

Be aware there's a HPFP pressure difference too, which affects certain tables, unless...

I have the same GPI STG 1 cam in a '16 Suburban and absolutely love it. With a Whipple, NW103 throttle body, LT4 injectors and long-tube headers I have it idling rock-steady at 720 RPM.

I can't...

Excellent point, Ben.

I had to really work on PE parameters quite a bit to trigger properly & cover the increased airflow with this supercharger. Boost certainly does comes in fast and hard.

Thank you for the guidance. This definitely gives me a starting point.

Mostly seeing KR in low RPM, high load situations when the bypass valve shuts and the PD blower throws boost at the engine....

Would you mind expanding on this a bit more?

I've been wrestling with inconsistent/erratic KR for months now and nothing seems to help.

2016 Suburban
-L83/6L80E
-Whipple
-GPI Stg 1 cam, no...

I assume your EVAP solenoid is hooked up and functional?

I've seen EVAP cycles throw STFT way out of whack temporarily.

The low-side pump is definitely suspect. Dropping pressure at high load and high RPM will only continue to get worse as the pump degrades.

Joshinator99 is spot-on. The HPFP can't feed the...

I always assumed the low side actual pressure fluctuates +/- 15 PSI from commanded, similar to a sine wave. Mine has done this for as long as I can recall. Is this not normal? Should low side actual...

Copy the Zero Pedal Torque values from the histogram and directly replace in the tune. No special paste adders or multipliers needed on this.

Depending on the mods and current tune, the values...