Aux pump + zl1 pump, no FPCM tune - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

RupertPupkin · 03-19-2023, 08:55 PM

As some you all know my car is done after an 18 month hiatus. Before I take delivery I want to make sure the tune is 100%. The hp being put down is not anywhere near what others have put down in similar builds. My assumption is that the fpcm is not adjusted to demand the fuel that is needs. I was told the duty cycle is 96% on the pumps, but still have a lot of injector left. Could that be the cause of having low power?

Power 700/597

larry_g · 03-20-2023, 07:17 AM

IIRC, the stock FPCM will fight the aux pump by pulling back on the main pump if it hasn't been told otherwise.

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RupertPupkin · 03-20-2023, 08:28 AM

Quote:

Originally Posted by larry_g

IIRC, the stock FPCM will fight the aux pump by pulling back on the main pump if it hasn't been told otherwise.

Sent from my Pixel 5 using Tapatalk

Ty.

eLeSthree · 03-21-2023, 11:18 AM

If you have plenty of injector, and a repeatable 65+psi of fuel pressure (ask tuner), then the reason for the low power would be the lack of airflow. That small blower is already blowing hot air and you're only getting 9-10psi. That means the motor is ready for more, and the blower is spent. I think this was Ted's point earlier about the small blower being a governor on the larger cube motor. #ITNEEDSAYSI

Surfdog SS · 03-26-2023, 03:57 PM

Seems low to me since your built, but I don't know much. I'm currently at 600 on 93, cam, zl1 pump and bap, 1000cc injectors @ 50%, my fpcm is programmed. I loose some pressure at e50, time for an aux pump and take the restrictor plate out. I'm hoping to be around 700 on e85 next go around

RupertPupkin · 03-26-2023, 05:31 PM

Everything checked out. Final number 730/630. Blower was maxxed. Definitely feels just as fast if not faster.

Surfdog SS · 03-26-2023, 06:07 PM

Quote:

Originally Posted by RupertPupkin

Everything checked out. Final number 730/630. Blower was maxxed. Definitely feels just as fast if not faster.

That's awesome man glad you got it back on the road

RupertPupkin · 03-26-2023, 10:26 PM

Ty. Already want to go bigger.

Surfdog SS · 03-27-2023, 06:32 PM

Quote:

Originally Posted by RupertPupkin

Ty. Already want to go bigger.

I'm in the market for an aux pump kit if you do

03-19-2023, 08:55 PM	#1
RupertPupkin Drives: 2014 Camaro SS 1Le Join Date: Feb 2016 Location: IL Posts: 1,606	Aux pump + zl1 pump, no FPCM tune As some you all know my car is done after an 18 month hiatus. Before I take delivery I want to make sure the tune is 100%. The hp being put down is not anywhere near what others have put down in similar builds. My assumption is that the fpcm is not adjusted to demand the fuel that is needs. I was told the duty cycle is 96% on the pumps, but still have a lot of injector left. Could that be the cause of having low power? Power 700/597 __________________ 2014 SS 1LE Money Pit/ Forged 402 CAM 22X/24X, .619/.617, 113 LSA/ LS9 Heads FIC 1200cc/DSX Aux Pump//McLeod RXT Clutch 730whp: 630Trq

03-20-2023, 07:17 AM	#2
larry_g Drives: 2014 1SS/1LE Join Date: Nov 2015 Location: Louisville, KY Posts: 826	IIRC, the stock FPCM will fight the aux pump by pulling back on the main pump if it hasn't been told otherwise. Sent from my Pixel 5 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.

03-21-2023, 11:18 AM	#4
eLeSthree Drives: 2011 Camaro SS 6sp Join Date: Nov 2016 Location: Drivers Seat Posts: 1,904	If you have plenty of injector, and a repeatable 65+psi of fuel pressure (ask tuner), then the reason for the low power would be the lack of airflow. That small blower is already blowing hot air and you're only getting 9-10psi. That means the motor is ready for more, and the blower is spent. I think this was Ted's point earlier about the small blower being a governor on the larger cube motor. #ITNEEDSAYSI __________________ 2011 Camaro SS---SOLD TMS Dart 427 FED M311s, ESS Tuning G4 Blower, DSX Triple FP Assembly, DSX FF, FIC1300, Mcleod RXT 1200HD, Edlebrock Pro Flo XT 1158whp 1017wtq. 2010 CTS-V A6 - "Stock" SOLD 630whp 658wtq 2024 F-150 RCSB 5.0 4x4 waiting for tunes...

03-26-2023, 03:57 PM	#5
Surfdog SS Drives: 2015 SS Black/Black Join Date: Jun 2016 Location: Florida Posts: 158	Seems low to me since your built, but I don't know much. I'm currently at 600 on 93, cam, zl1 pump and bap, 1000cc injectors @ 50%, my fpcm is programmed. I loose some pressure at e50, time for an aux pump and take the restrictor plate out. I'm hoping to be around 700 on e85 next go around __________________ 2015 2SS M6 Stainless Power LT header w/ hf cats, NPP axle backs, ECS Novi 1500 SC, ATI 10% UD, BMR 1.25 springs, trailing arms, and bushings, short thow shifter, Z28 replica rims, BTR stage 2 centrifugal cam, zl1 pump, FIC 1000, and flex fuel

03-26-2023, 05:31 PM	#6
RupertPupkin Drives: 2014 Camaro SS 1Le Join Date: Feb 2016 Location: IL Posts: 1,606	Everything checked out. Final number 730/630. Blower was maxxed. Definitely feels just as fast if not faster. __________________ 2014 SS 1LE Money Pit/ Forged 402 CAM 22X/24X, .619/.617, 113 LSA/ LS9 Heads FIC 1200cc/DSX Aux Pump//McLeod RXT Clutch 730whp: 630Trq

03-26-2023, 10:26 PM	#8
RupertPupkin Drives: 2014 Camaro SS 1Le Join Date: Feb 2016 Location: IL Posts: 1,606	Ty. Already want to go bigger. __________________ 2014 SS 1LE Money Pit/ Forged 402 CAM 22X/24X, .619/.617, 113 LSA/ LS9 Heads FIC 1200cc/DSX Aux Pump//McLeod RXT Clutch 730whp: 630Trq