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  #21  
Old 03-17-2022, 08:47 AM
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Originally Posted by JKnight View Post
Pulled the trigger on the Holley Terminator X Max Stealth and all the Holley ignition components. Paired with the restomod tank, ZL1 pump and vaporworx controller, Iím hoping my foray into fuel injection will go smoothly! Iíll be calling Andrew for tuning help once I get it all plumbed, wired and fired.
Not that he needs it but I will vouch for Andrews knowledge and ability to remote tune.. and his patience with EFI challenged people like myself.
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  #22  
Old 03-19-2022, 12:57 AM
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I see the Vaporworx materials say that no post-pump filter is needed, but Holley prescribes a 10 micron filter post pump, anyone feel itís necessary? I donít want to add the restriction if the pump moduleís filter is sufficientÖ
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  #23  
Old 03-19-2022, 02:01 AM
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I have a 10 micron inline filter on mine with Carls Vaporworx controller. Carl did recommend the filter being as far back towards the tank as practical, but he didn't have a problem with me running one. I've always had them, and been in the 900-950 rwhp range without issue.
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Old 03-19-2022, 01:39 PM
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Same I have a 10micron in-line close to the tank. No issues at all beyond making sure compatible with e85.
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Old 03-19-2022, 05:35 PM
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Quote:
Originally Posted by camcojb View Post
I have a 10 micron inline filter on mine with Carls Vaporworx controller. Carl did recommend the filter being as far back towards the tank as practical, but he didn't have a problem with me running one. I've always had them, and been in the 900-950 rwhp range without issue.
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Originally Posted by will69camaro View Post
Same I have a 10micron in-line close to the tank. No issues at all beyond making sure compatible with e85.
Same as the above guys...I have a 10 micron filter as well with my Vaporworx too.
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Old 03-19-2022, 11:06 PM
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Perfect! Thanks for the input gents!
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  #27  
Old 03-24-2022, 12:51 AM
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A bit of clarification.......

When using an OEM fuel module like the Gen5 SS, ZL1, CTS-V, etc., no inline filter is needed or recommended.

Most all modern OEM fuel modules have pre and post pump filters. There are no inline filters present in most modern chassis. The Gen3 Coyote GT500 is an exception.

The problem with using an inline filter is that some have an internal check valve. At key-off, heat soak will cause the fuel pressure in the line to go up. If there is a check valve in the filter there is no pressure release mechanism. That's what the 85psi pressure regulator/safety valve in the fuel module is for, heat soak pressure release. Once the line pressure goes over about 100psi the injectors will not work. Just a few weeks ago a customer had this exact problem and was measuring 190psi in the fuel line, hence leaving him stranded since the car would not start. If this happens the simplest way to get the car started is to release a bit of pressure through the fuel rail diagnostics port/Schrader valve. But, many aftermarket fuel rails lack this feature. I recommend to everyone to install one in an easily accessible location since it will also tell you if there is no fuel pressure.

There is no drawback to putting a filter in, but it's redundant. I've not run an inline filter in the Camaro since starting VaporWorx back in 2010.

For other pump types, where essentially the pumps are hung on a stick inside of the tank (Aeromotive, Tanks Inc., etc.) an inline fine element filter is mandatory. However, if a pressure regulator is plumbed upstream of the filter, the same heat soak overpressure condition will occur if a check valve is inside the filter body.
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Last edited by CarlC; 03-24-2022 at 12:58 AM.
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  #28  
Old 05-13-2022, 04:53 PM
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Carl, if we do have an in-line filter after a GM (CTS-V2) pump, should your vaporworx fuel pressure sensor be before or after that filter?
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