FPCM Module removal - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Marko.P · 12-24-2025, 08:05 AM

Hi, I need some help and advice, I would be very grateful.
I have built a custom return-style fuel system and I am removing the FPCM (Fuel Pump Control Module) due to aftermarket fuel pumps. What exact settings/tables do I need to adjust or disable in HP Tuners to avoid error codes and limp mode after removing the module?
I’ve tried searching for a specific guide but haven't found a definitive one yet. The car is a supercharged 2010 Chevrolet Camaro SS.

Any help would be much appreciated!

larry_g · 12-25-2025, 10:07 AM

I kept the FPCM in place and used the power output for my fuel pump relays. This allows the pump to prime with turning the key on. But more importantly it keeps the safeties in place that cut power in case of an accident.

I attached a sketch of how I laid out the relays for a triple pump setup with two Hobbs switches. I'd have to see if I can find the posts here, but I want to say the signal was the green with white stripe wire.

Sent from my Pixel 8 Pro using Tapatalk

HOJO · 12-26-2025, 02:34 PM

Quote:

Originally Posted by larry_g

I kept the FPCM in place and used the power output for my fuel pump relays. This allows the pump to prime with turning the key on. But more importantly it keeps the safeties in place that cut power in case of an accident.

I attached a sketch of how I laid out the relays for a triple pump setup with two Hobbs switches. I'd have to see if I can find the posts here, but I want to say the signal was the green with white stripe wire.

Sent from my Pixel 8 Pro using Tapatalk

Green and White wire is correct. Here’s a couple links that will help a bit.
https://www.camaro5.com/forums/showt...is%20old%20hat

https://www.camaro5.com/forums/showt...wer%2C%20brown

Marko.P · 12-27-2025, 11:48 AM

Quote:

Originally Posted by larry_g

I kept the FPCM in place and used the power output for my fuel pump relays. This allows the pump to prime with turning the key on. But more importantly it keeps the safeties in place that cut power in case of an accident.

I attached a sketch of how I laid out the relays for a triple pump setup with two Hobbs switches. I'd have to see if I can find the posts here, but I want to say the signal was the green with white stripe wire.

Sent from my Pixel 8 Pro using Tapatalk

Thank you, the connection is not a problem for me, but rather how to configure the ECM controller so that it understands how to read the FPCM controller even if it has been removed. I understand that I can remove certain settings from the fuel controller and save, for example, the original fuel pressure data using the hp tuners program.

12-24-2025, 08:05 AM	#1
Marko.P Drives: Chervolet camaro gen5 6.2l v8 Join Date: Nov 2025 Location: Finland Posts: 2	FPCM Module removal Hi, I need some help and advice, I would be very grateful. I have built a custom return-style fuel system and I am removing the FPCM (Fuel Pump Control Module) due to aftermarket fuel pumps. What exact settings/tables do I need to adjust or disable in HP Tuners to avoid error codes and limp mode after removing the module? I’ve tried searching for a specific guide but haven't found a definitive one yet. The car is a supercharged 2010 Chevrolet Camaro SS. Any help would be much appreciated!

12-25-2025, 10:07 AM	#2
larry_g Drives: 2014 1SS/1LE Join Date: Nov 2015 Location: Louisville, KY Posts: 886	I kept the FPCM in place and used the power output for my fuel pump relays. This allows the pump to prime with turning the key on. But more importantly it keeps the safeties in place that cut power in case of an accident. I attached a sketch of how I laid out the relays for a triple pump setup with two Hobbs switches. I'd have to see if I can find the posts here, but I want to say the signal was the green with white stripe wire. Sent from my Pixel 8 Pro using Tapatalk __________________ 830 WHP 700 WTQ, Whipple 2.9 @ 13lbs Boost, Flex Fuel Tune by Blevins Tuning, LSA SBE, 3.5 GripTec, ATI LS3 Damper, AFR 260cc Mongoose, ARP Studs, Yella Terra Ultralites, Johnson 2110R, BTR PDS Stage 3, Melling 10355, Improved Racing Baffle, ID1050X, DSX Triple Fuel Pump, RotoFab CAI, NW 103mm TB, Stainless Works 1-7/8" LTH to 3" Speed Eng w/ X-pipe to NPP, Powermaster 9509 XS, Detroit Speed Motor Mounts, MGW, Monster LT1-S, ZL1 Calipers, DBA Rotors & Pads, Bilstein B6 Struts & Shocks, BMR 1.25" Drop Springs & Adj Rear Bar, Pegasus Solid Bushings, Z/28 Wheels, other misc parts.