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Originally Posted by camcojb
I'm all for any return other than after the rails; grab ahold of the fuel rails after the engine is completely up to temp and been driven for a while. The gas is in there much longer than if the exhaust pipe gets close at a small point in the line. Neither are good however, but I think insulating the fuel line near the exhaust will definitely help, but if you're going through the rails to bypass you still may have issues.
By the way, many of the new oem cars are regulated in the tank (Vettes, GTO's, etc.) or do not have a bypass from the fuel rails back to the tank (Lightning, etc.). I ran a couple cars regulated back by the tank and they worked flawlessly.
Jody
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I may be mistaken, but I believe the vette LS7 fuel system is set up just as you describe. Regulated at the tank, or somewhere way back aft, with no return from the engine compartment.