Can a PWM compatable pump be swapped in place of stock pump? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

ecreps · 02-20-2018, 01:53 PM

https://www.full-race.com/store/fabr...e85-fuel-pump/

Walbro makes a 450lph PWM compatible pump; is there any reason it wouldn't work as a drop in replacement?

I believe the stock FPCM can deliver 20A; so that should be fine.

Physical size maybe?

Seems like a possile solution to get an extra 150HP over the stock ZL1 255.

racesloth · 02-20-2018, 02:51 PM

subscibing

Bottledbird68 · 02-22-2018, 10:00 AM

In for answers as well

scv_guy · 02-22-2018, 10:28 AM

Quote:

Originally Posted by ecreps

https://www.full-race.com/store/fabr...e85-fuel-pump/

Walbro makes a 450lph PWM compatible pump; is there any reason it wouldn't work as a drop in replacement?

I believe the stock FPCM can deliver 20A; so that should be fine.

Physical size maybe?

Seems like a possile solution to get an extra 150HP over the stock ZL1 255.

The simple answer is yes, however the pump may draw more than 20A and if that happens you will get a MIL. I had it happen to me when I upgraded my Livernois dual pump with the DW drop in pumps. worked great but got a MIL anytime I went WOT.

ecreps · 02-22-2018, 06:32 PM

Quote:

Originally Posted by scv_guy

The simple answer is yes, however the pump may draw more than 20A and if that happens you will get a MIL. I had it happen to me when I upgraded my Livernois dual pump with the DW drop in pumps. worked great but got a MIL anytime I went WOT.

It looks like it draws a max of like 18 amps at 70 psi and 13.5 volts. I think I'll give it a try.

It should flow 355 liters/hour at those settings. I think it will do roughly 800whp on 93, maybe 850 or so with meth.

Bottledbird68 · 02-23-2018, 08:06 AM

Keep us updated!
Even if it does set an MIL couldn’t you just turn that code off in the tune and call it a day?
Adding a small wet shot to my car in the next month or so and planning some sort of fuel pump upgrade at the same time so I’m very interested how this turns out.

Daoust58 · 09-16-2019, 11:13 PM

How did this work out?

SQUEEGIO · 11-18-2019, 05:21 PM

Any updates on this? I'm very interested in trying this as well and maybe even going with a vaporworks PWM controller which is good to 60a I think. Either way, should be able to just turn off the CEL if using the stock FPCM.

I know the stock bucket has a pressure relief/regulator at 58psi so that may make things difficult to achieve higher psi. I found that VaporWorks sells an adapter and 60psi "regulator" for the stock SS pump module but still not enough for boosted and/or e85 applications. I believe I've read of people blocking that off but since VaporWorks sells an adapter, maybe there's an adjustable regulator that can be made to fit.

It would be nice to be able to buy these inexpensive pumps and have a decent setup without spending thousands of dollars. Technically one could run a VaporWorks controller (or stock flashed FPCM if current draw isn't an issue), mod the stock bucket, find a solution to the pressure relief deal and be on their way with a reliable setup.

eLeSthree · 11-19-2019, 03:02 PM

Quote:

Originally Posted by Daoust58

How did this work out?

I’m pretty sure (if i am thinking of the right username) that he ended up with a dual pump solution in aftermarket bucket. He did use the fpcm to control the primary pump by turning the FP duty cycle up to max. The pwm signal at 99% kept the non pwm pump happy.

Search by his username.

02-20-2018, 01:53 PM	#1
ecreps Drives: 2014 1LE, 1996 z28 Join Date: May 2015 Location: United States Posts: 172	Can a PWM compatable pump be swapped in place of stock pump? https://www.full-race.com/store/fabr...e85-fuel-pump/ Walbro makes a 450lph PWM compatible pump; is there any reason it wouldn't work as a drop in replacement? I believe the stock FPCM can deliver 20A; so that should be fine. Physical size maybe? Seems like a possile solution to get an extra 150HP over the stock ZL1 255.

02-20-2018, 02:51 PM	#2
racesloth Dan Drives: 2010 Camaro 2SS IOM Join Date: Nov 2013 Location: Georgia, USA not the other one Posts: 1,041	subscibing __________________ Dan 2010 IOM SS YSI-B, Pat G Cam, Ported CTS-V Heads, ARH LTs MBRP 3" exhaust http://www.camaro5.com/forums/showth...&highlight=ysi

02-22-2018, 10:00 AM	#3
Bottledbird68 Drives: 2011 2ss convertible, 68 firebird Join Date: Aug 2016 Location: Athol ma Posts: 142	In for answers as well

02-23-2018, 08:06 AM	#6
Bottledbird68 Drives: 2011 2ss convertible, 68 firebird Join Date: Aug 2016 Location: Athol ma Posts: 142	Keep us updated! Even if it does set an MIL couldn’t you just turn that code off in the tune and call it a day? Adding a small wet shot to my car in the next month or so and planning some sort of fuel pump upgrade at the same time so I’m very interested how this turns out.

09-16-2019, 11:13 PM	#7
Daoust58 Drives: 2010 camaro 2ss/rs Join Date: Jan 2016 Location: toledo Posts: 41	How did this work out?

11-18-2019, 05:21 PM	#8
SQUEEGIO Drives: 2011 LS3 Camaro 2SS/RS Join Date: Aug 2015 Location: Colorado Posts: 32	Any updates on this? I'm very interested in trying this as well and maybe even going with a vaporworks PWM controller which is good to 60a I think. Either way, should be able to just turn off the CEL if using the stock FPCM. I know the stock bucket has a pressure relief/regulator at 58psi so that may make things difficult to achieve higher psi. I found that VaporWorks sells an adapter and 60psi "regulator" for the stock SS pump module but still not enough for boosted and/or e85 applications. I believe I've read of people blocking that off but since VaporWorks sells an adapter, maybe there's an adjustable regulator that can be made to fit. It would be nice to be able to buy these inexpensive pumps and have a decent setup without spending thousands of dollars. Technically one could run a VaporWorks controller (or stock flashed FPCM if current draw isn't an issue), mod the stock bucket, find a solution to the pressure relief deal and be on their way with a reliable setup.