[HWYSTR455]

Originally Posted by Formulajones

... I also deadhead the Sniper Stealth units as that is how they are advertised to install so you can keep a "stealth" single fuel line coming up to the Sniper. I simply have my regulator hidden low behind the engine with a return line from there, keeping a stock appearance up top...

I missed where Holley instructions show to deadhead the Snipers/Stealth?

https://documents.holley.com/199r11971.pdf

Instructions and pic clearly show a bypass regulator.

Regular Sniper instructions:

https://documents.holley.com/199r11031r.pdf

Internal bypass regulator is used, return line comes directly from the throttlebody.

Many have had issues with the internal regulator, and the common corrective action is to install an external bypass regulator.

The psi issue has been addressed in numerous posts on the Holley EFI forums.

Just to say, in other non-holley installations, and in general, it is not recommended to run 2 dampers in series.



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