Return lines in a question & whats this ?

[d41]

Hey all, replaced my return lines yesterday, easy but ******* my bad back, anyway after all was done it fired right up and ran perfect no cranking needed ? So what is the thing (looks like brass) between the metal fuel line and return cap on the pass side front injector ? Also why don't I get any fluid water or fuel when I try and drain my filter ?
Will replacing the return lines make the truck run better at hwy speeds ? It sure does seem to, feels like more power & smoother.
Thanks,
Bill

 

[d41]

Sorry about that ,Another question What is that big thick piece of foam underneith the air cleaner ? Looks to me like it would limit a lot of air flow, Is it needed, Don't live or drive in dusty conditions. Can I ditch it ?
Thanks,

 

[towcat]

The brass thingie you're talking about is to help the piezo sensor when timing the truck. Eliminating air in the feul system is always a good thing to do and you're feeling the effects.
the foam thing tells me you have a wastegated ATS system...right? If so, you can ditch it but do watch the air filter condition. Imho, its too small for the turbo and clogs up too easily.

 

[d41]

Re:

Thanks,
The turbo says Garret on it, I change the filter maybe 5000 miles ago and it is pretty dirty, Would removing the foam from underneith the filter give me a noticable differance in air flow, What are the chances if I do remove it that I would get a lot of dirt/debris through the turbo, I have read of folks putting in cowl air or cold air intake but I don't know if I want to cut the truck.
Thanks,