Low Boost question

[TNRGreene]

1st & 2nd hook 38.1psi, ran awesome....3rd hook 9.6psi . No holes in boots or anywhere we can find. No noises, no nothing. Guess I need to pressure test everything.

 

[IOWA LLY]

Still running a variable vane turbo or no?

 

[bullfrogjohnson]

You can build a ghetto tester out of pvc pipe caps and test the system for leaks

 

[TNRGreene]

Still running a variable vane turbo or no?

Yes, VVT

 

[TNRGreene]

You can build a ghetto tester out of pvc pipe caps and test the system for leaks

Ya I know but it's weird that it just happened the way it did

 

[TNRGreene]

Here are the 2 pulls, The first is good & then the 2nd was right after. NO changes were made
[YOUTUBE]CYSaZkhOAjU[/YOUTUBE]
[YOUTUBE]x0ZIAgh5JWo[/YOUTUBE]

 

[duratothemax]

it must be one of those "LLY things" that people claim dont exist/can be tuned out.

ben

 

[beach_33]

mine did this same thing. i'm not sure what it was. i just assumed it was something in the tune. i changed tunes to ine that i knew was a good pulling tune as i had used it before

 

[TNRGreene]

mine did this same thing. i'm not sure what it was. i just assumed it was something in the tune. i changed tunes to ine that i knew was a good pulling tune as i had used it before

This tune has 4 great hooks on it & the tune before had 6 hooks on it. The only difference between the 2 are a little more PW up top

 

[bonescarolfi]

I had something odd like this happen today on my LB7 but it was fuel and not boost. They had me test the sled setup and i somehow lost fuel but when they pulled me back and i tried again everything was fine with no fault codes or anything. Made me wish i was logging the run but i got lazy.

 

[TNRGreene]

it must be one of those "LLY things" that people claim dont exist/can be tuned out.

ben

I remember you talking about this. Do I remember you saying it was pulling fuel when it was happening?

 

[TNRGreene]

I had something odd like this happen today on my LB7 but it was fuel and not boost. They had me test the sled setup and i somehow lost fuel but when they pulled me back and i tried again everything was fine with no fault codes or anything. Made me wish i was logging the run but i got lazy.

I have a log of a good run & the screwed up run. The only difference is the boost, fuel looks the same

 

[duratothemax]

vane position?

 

[TNRGreene]

I'll post the logs but I need a different computer

 

[TNRGreene]

OK, how do I post a log?

 

[racinmike77]

first put it into a compressed file then post using the manage attachments like you are posting a picture

 

[Fingers]

Check the vane position. If it isn't constantly changing, you probably cracked the unison ring in the turbo and it is jamming. Very common, especially for people who heat up fast and cool em down fast like sled pullers. Mine is cracked now and hangs once in a while. PITA. I need to pull it some day soon and fix it.

 

[TNRGreene]

Check the vane position. If it isn't constantly changing, you probably cracked the unison ring in the turbo and it is jamming. Very common, especially for people who heat up fast and cool em down fast like sled pullers. Mine is cracked now and hangs once in a while. PITA. I need to pull it some day soon and fix it.

Does it clear it self up? I wasn't logging VP until today

 

[Fingers]

It can. Or at least it has on mine. As it gets worse, it will stick, and stay that way till you agitate the turbo. (hit it with a hammer )

 

[TNRGreene]

It can. Or at least it has on mine. As it gets worse, it will stick, and stay that way till you agitate the turbo. (hit it with a hammer )

Would now be the time to put some finger vanes in it?