Stock fuel rail and fuel line limits - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

madmikeismad · 07-30-2020, 03:11 PM

Anyone have a decent number for stock rail and line limits? I'm trying to figure out if I'm out of pump or if the lines just can't support any more flow. I'm running the stock in pump with the dsx/walbro 255 auxillary, and draining down to 40psi up top. I'm debating going up to a 400+ pump for the auxillary, or running 2 aux pumps, but I know it wouldn't be worth it if the lines and rails just can't support it. If they won't, then I'll go just eat it and go return setup with an aeromotive in tank, a big pump in the aux spot, and new lines and rails.

RobZL1 · 07-30-2020, 03:37 PM

In my opinion, your setup should be good as listed in your mods. Is your tune set up properly to take advantage of the aux pump? I wouldn't expect a drop down to 40.

madmikeismad · 07-30-2020, 04:47 PM

I should mention this is 30% E in the tank.

As far as I can tell it's set up right. I added the aux pump after running out of fuel with 10% lower, intake and headers/exhaust. It worked great, even with 50% E, usually keeping around 50% IDC with the 1050's, and pressure would drop to 60ish with commanded 70 (which I thought was kind of odd at the time). Then I did the porting and 2.38 upper and now pressure is dropping to 40psi with 125% IDC. So no more runs until I get this sorted out lol I'll attach the tune file in another post from the laptop.

madmikeismad · 07-30-2020, 04:51 PM

won't let me upload hpt files.

https://drive.google.com/file/d/1ujB...ew?usp=sharing

RobZL1 · 07-30-2020, 10:03 PM

I posted in your thread over at hpt.

madmikeismad · 07-30-2020, 11:12 PM

Quote:

Originally Posted by RobZL1

I posted in your thread over at hpt.

Yeah I'm going to retire this thread now that I know it's a different issue lol

Vegas Bound · 07-30-2020, 11:15 PM

I did 659 whp with stock rails and lines.

madmikeismad · 07-30-2020, 11:44 PM

Quote:

Originally Posted by Vegas Bound

I did 659 whp with stock rails and lines.

What all is done? E?

Vegas Bound · 07-30-2020, 11:53 PM

Quote:

Originally Posted by madmikeismad

What all is done? E?

FIC1300 injectors (I could have done 1050), DSX aux pump. ZL1 pump and ADM FPCM.

Vegas Bound · 07-30-2020, 11:58 PM

Quote:

Originally Posted by madmikeismad

What all is done? E?

When I was just 659, I didn't have e85 or the aux pump or meth..

Just 2.55 upper pulley, cam, LSA, ZL1 pump and ADM FPCM.

Many changes since then. Currently 750+ whp.

madmikeismad · 07-31-2020, 12:04 AM

Now I'm really curious what power I'm really at if I was actually maxing out the stock pump. I really need to get my own dyno lol

Vegas Bound · 07-31-2020, 12:17 AM

Quote:

Originally Posted by madmikeismad

Now I'm really curious what power I'm really at if I was actually maxing out the stock pump. I really need to get my own dyno lol

Swap out to a 2.55 upper and 9.5 lower.

madmikeismad · 07-31-2020, 12:22 AM

Quote:

Originally Posted by Vegas Bound

Swap out to a 2.55 upper and 9.5 lower.

What for? I'm not having any belt slip issues right now and it would only get me 4% more rpm. I'm at 16-17psi now depending on the weather.

mrvenicess · 07-31-2020, 06:56 AM

I ran out of fuel with the stock rails around 800 whp. Destroyed a piston and my block.

07-30-2020, 03:11 PM	#1
madmikeismad Drives: 2012 ZL1 Join Date: Mar 2020 Location: Oklahoma City Posts: 66	Stock fuel rail and fuel line limits Anyone have a decent number for stock rail and line limits? I'm trying to figure out if I'm out of pump or if the lines just can't support any more flow. I'm running the stock in pump with the dsx/walbro 255 auxillary, and draining down to 40psi up top. I'm debating going up to a 400+ pump for the auxillary, or running 2 aux pumps, but I know it wouldn't be worth it if the lines and rails just can't support it. If they won't, then I'll go just eat it and go return setup with an aeromotive in tank, a big pump in the aux spot, and new lines and rails. __________________ '12 ZL1 - RPM 5", TSP 2" headers, Speed Engineering 3" header back, Dayco 8.66 lower/LPE 2.38 upper with solid isolator and 10 bolt hub, hand ported blower and snout and went way too far, ID1050x's, DSX aux harness with a summit 400lph pump on E, NGK TR8's with Taylor wires, 160* tstat, NW 102, UPR catch cans, HP Tuners, Stock unopened long block

07-30-2020, 03:37 PM	#2
RobZL1 fo'shizZL1 Drives: 2017 ZL1 Join Date: Aug 2017 Location: ATL Posts: 1,281	In my opinion, your setup should be good as listed in your mods. Is your tune set up properly to take advantage of the aux pump? I wouldn't expect a drop down to 40. __________________ 2017 ZL1 M6 Black \| Maggie 2650 // 103TB // Big Gulp Past Rides- 2014 ZL1 M6 Red Hot \| Tons of mods 2004 CTS-V M6 Silver \| Many mods 1995 Corvette M6 Torch Red \| A few more mods 1992 Camaro M5 White \| A few mods

07-30-2020, 04:47 PM	#3
madmikeismad Drives: 2012 ZL1 Join Date: Mar 2020 Location: Oklahoma City Posts: 66	I should mention this is 30% E in the tank. As far as I can tell it's set up right. I added the aux pump after running out of fuel with 10% lower, intake and headers/exhaust. It worked great, even with 50% E, usually keeping around 50% IDC with the 1050's, and pressure would drop to 60ish with commanded 70 (which I thought was kind of odd at the time). Then I did the porting and 2.38 upper and now pressure is dropping to 40psi with 125% IDC. So no more runs until I get this sorted out lol I'll attach the tune file in another post from the laptop. __________________ '12 ZL1 - RPM 5", TSP 2" headers, Speed Engineering 3" header back, Dayco 8.66 lower/LPE 2.38 upper with solid isolator and 10 bolt hub, hand ported blower and snout and went way too far, ID1050x's, DSX aux harness with a summit 400lph pump on E, NGK TR8's with Taylor wires, 160* tstat, NW 102, UPR catch cans, HP Tuners, Stock unopened long block

07-30-2020, 04:51 PM	#4
madmikeismad Drives: 2012 ZL1 Join Date: Mar 2020 Location: Oklahoma City Posts: 66	won't let me upload hpt files. https://drive.google.com/file/d/1ujB...ew?usp=sharing __________________ '12 ZL1 - RPM 5", TSP 2" headers, Speed Engineering 3" header back, Dayco 8.66 lower/LPE 2.38 upper with solid isolator and 10 bolt hub, hand ported blower and snout and went way too far, ID1050x's, DSX aux harness with a summit 400lph pump on E, NGK TR8's with Taylor wires, 160* tstat, NW 102, UPR catch cans, HP Tuners, Stock unopened long block

07-30-2020, 10:03 PM	#5
RobZL1 fo'shizZL1 Drives: 2017 ZL1 Join Date: Aug 2017 Location: ATL Posts: 1,281	I posted in your thread over at hpt. __________________ 2017 ZL1 M6 Black \| Maggie 2650 // 103TB // Big Gulp Past Rides- 2014 ZL1 M6 Red Hot \| Tons of mods 2004 CTS-V M6 Silver \| Many mods 1995 Corvette M6 Torch Red \| A few more mods 1992 Camaro M5 White \| A few mods

07-30-2020, 11:15 PM	#7
Vegas Bound Account Suspended Drives: 2013 Sparkly Red One Join Date: Dec 2018 Location: Hospitality State Posts: 2,558	I did 659 whp with stock rails and lines.

07-31-2020, 12:04 AM	#11
madmikeismad Drives: 2012 ZL1 Join Date: Mar 2020 Location: Oklahoma City Posts: 66	Now I'm really curious what power I'm really at if I was actually maxing out the stock pump. I really need to get my own dyno lol __________________ '12 ZL1 - RPM 5", TSP 2" headers, Speed Engineering 3" header back, Dayco 8.66 lower/LPE 2.38 upper with solid isolator and 10 bolt hub, hand ported blower and snout and went way too far, ID1050x's, DSX aux harness with a summit 400lph pump on E, NGK TR8's with Taylor wires, 160* tstat, NW 102, UPR catch cans, HP Tuners, Stock unopened long block

07-31-2020, 06:56 AM	#14
mrvenicess Drives: 2013 CRT ZL1 auto Join Date: May 2010 Location: Venice Fl Posts: 1,443 View My Garage	I ran out of fuel with the stock rails around 800 whp. Destroyed a piston and my block.