Some people do that so they can run a shorter pressure line and not have it so so choppy......he probably had a good one on the fuel side and is keeping it for another RC.......or he's a dingus and I wouldn't buy an RC that he was running w/ no fuel filter
Yes and no... Some people put them in-line with the exhaust to keep debris from entering the fuel tank... I dont know if it actually does anything, because the exhaust always blows stuff out... i guess you can't be too safe... :shrug:
Do you get the ashtray and cigarette butts too? Yum, yum! He porbably put it in there instead of running a longer line. I put longer line on my pressure side and it helped with the temps as the fuel load burned off.
For you guys with the moron comments it just shows how little you really know. Putting a filter on the pressure line helps smooth out how much pressure is getting to the tank. This way you don't have to run a foot of line you can run 1/2 of that or less. Pressure line tuning is a big part of engine tuning. If your pressure line is way off you tune will be too!