Is there any downsides to mounting the Aeromotive Fuel filter directly onto the fuel rail (Before the entry point).


Im running a ramhorn manifold, and this is what I did. After driving for a while, I noticed cylinders 3 and 4 runners (close to the half sized radiator) on the manifold are discoloured (dark blue-ish). And cylinders 1 and 2 are still bright gold. The wideband and plugs are all reading the same (Rich). Maybe Im just paranoid, but thought I would get some feedback anyways.

 

If your plugs look fine, Id say you are good. Could be just the ran fan blowing debris onto the manifold and it burning onto it.

 

No effect on performance. Most people just mount them on the firewall but I had a min in-line filter mounted on the feed side of the rail on one of my old drag cars. Pressure is the same where ever you put it.

Infred thermometers come in handy in cases like this. Just point the lazer at each runner and compare temp readouts. I'd say the old spit on the finger test will give you the answer your looking for.

 

typically, #3 cyl will be the "hottest"

compare the plugs just ot be 100% sure that everything is OK. Im pretty sure its just the manifold or contaminants.