Two Questions: Fuel & Boost

[theswoleguy]

First question is:
Anyone have any weird issues when doing the BB fuel spring mod?
I did this and my fuel pressure came up to constant 65 but now unless the truck is fully warmed ( and i mean fully warm) she seems to like ping/det or that of over fueling and you can see when it does this puffs of black smoke out the back. Should i have my tune adjusted?

Also what boost are you guys running on your tunes? Here is mine rolling down the hwy with a quick roll on in 5th. 34psi.


ive done all bolt ons it seems only thing now is all the expensive crap...

[Newman]

I've never had the ping from the raised FP but I could see 36 psi on my race tune...

[PGreenSVT]

I've never seen more than 31psi out of my 03 turbo.

[Evil Eye]

Originally Posted by Newman

I've never had the ping from the raised FP but I could see 36 psi on my race tune...

Didn't you also have some ongoing issues with your head gaskets... I'm thinking you had some drive pressure that was leaking off due to the HG's, which allowed you to boost that high. If they do boost that high, I don't imagine they last very long... I know a certain 06 turbo that blew up last night that the driver indicated 34psi towing 6k lbs up a decent grade. BTW, we got the turbo replaced and got back on the road just after midnight.

I haven't heard of any 6.0L stock turbos, particularly the 03 and 04 turbos getting much higher than 30psi. My 05 stocker at full boost with any tune won't get higher than 28psi.

[theswoleguy]

well i guess the trucks running good then. im on erics studded insanity tune.

[Wojo]

i saw 34lbs just last week. i was on the freeway with a terrible headwind. truck got bogged way down and when i romped on it to get it to downshift the boost jumped to 34lbs before it downshifted for me

[Newman]

Originally Posted by Evil Eye

Didn't you also have some ongoing issues with your head gaskets... I'm thinking you had some drive pressure that was leaking off due to the HG's, which allowed you to boost that high. If they do boost that high, I don't imagine they last very long... I know a certain 06 turbo that blew up last night that the driver indicated 34psi towing 6k lbs up a decent grade. BTW, we got the turbo replaced and got back on the road just after midnight.

I haven't heard of any 6.0L stock turbos, particularly the 03 and 04 turbos getting much higher than 30psi. My 05 stocker at full boost with any tune won't get higher than 28psi.

My truck would do over 30psi boost the day I drove it off the lot

[theswoleguy]

im just sad that theres nothing left to do now but real expensive stuff...
Injectors, Turbo(s), Transmission work... hell i dont think i have any fuel left to put on a small bottle. Any smoke i do get is quickly cleared.

[Evil Eye]

So are these sustained boost pressures or just spikes? I can get mine to spike above 30psi for a moment, but that's not the actual number.

[theswoleguy]

im 5th mine will hold this for a while till around 100+ then the revs and engine is sucking in more and it will taper down. Ive spiked 38psi but will only hold around 28 in lower gears, just runs through them too fast