i put a fuel psi guage in my truck and it is jittery and all over the place intill i bleed the air out, that will last 2 days then i gotta do it again. is there any way to keep the air from getting up there? and if i get a stc tuner is it going to make my truck smoke. i just replaced the turbo because of soot build up and i dont want any smoke but i would like a little more power? any ideas would really help. thank you

 

only time mine smokes is on a hard take off with the extreme race tune and 5 inch supertruck exhaust. just give her alittle hell every once and awhile to keep it clean.
are you running a mechanical gauge or do you have an electric sending unit that goes to an electronic fuel gauge?

 

With the SCT, you'll want to get custom tunes. You can get a street tune that will almost never smoke, unless you really work at it (ie, like standing still at a stop sign and flat footing it right away, it will smoke a little), but it's really a clean tune. The xtreme tunes will haze just ever so slightly at WOT, but are really clean considering the power they add.

As for your fuel pressure gauge, what gauge are you using, and where did you tap into for the readings? You should not have any jitter to it, and you definitely shouldn't have to keep bleeding air... something is definitely wrong.

 

You could be getting combustion gasses into the fuel system from a bad injector or leaking copper washer. This can ruin other injectors around it. Another source of air in the fuel system is a leaking cap on the primary fuel filter.

 

its a mechanical auto meter guage taped into the seconary fulrl filter bowl off the bottom side. i dont have an isolater because is mounted under the hood. but yesterday i bled it and this morrning it was fine, after work all i could do is . when driving i let off the throttle and it is fine right at 55 psi. when i touch the petal it bounces between 40 and 60 psi and in 1st gear 900 rpm really chuggin its ape ****. its allways the little stuff that eats a guy

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oh and im not a racing guy (no thanks to the 6 speed) i pull a 30 ft flat bed 120 miles a day would a street tune be ok for that or do i want somthing else?

 

Get a towing tune. They say you can tow up to 10,000lbs with the street, but personally I like the towing tunes for any amount of towing. Do you have other guages in there?

I'm not really familiar with the mechanical fuel pressure gauges, maybe you do need the isolator?

 

i got a pyro guage as well but its all electric. had to put the stinger on the turbo outlet, i couldnt bring my self to put it befor the turbo ....fear of burning up another turbine

 

Stinger? I'm not sure what you're talking about...

 

oops, slang for exhaust temp probe sorry

 

Why did you put it post turbo? That doesn't really give an accurate reading... Mine is right in my drivers side manifold. Even if you did get a few chips in there, I'm sure they'd pass right through the turbo...

I just drilled mine in small increments, no lube, no grease, nothing, then just put a shop vac up there and sucked the crap out of there. No issues in the 60k miles or so since I've done that... I'm at almost 90k on the same stock turbo and I've run it up and past 35psi more than a few times.