Running 25psi solid.
06-20-2010, 06:30 PM
#4
Yep, long hard pulls at >24 psi generates too much heat for the piston ring end gap. The rings expand, gouge into the cyl walls and pop the ring lands off of #1 or #4 piston.
I spike 25, hold 24 to 4500 and taper to 16 psi @ 7k.
The HPT over TF tune will let you boost that long and hard if you wish. I prefer not to overspool the turbo drastically at higher rpms.
I spike 25, hold 24 to 4500 and taper to 16 psi @ 7k.
The HPT over TF tune will let you boost that long and hard if you wish. I prefer not to overspool the turbo drastically at higher rpms.
06-20-2010, 08:05 PM
#9
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sheldon im tuned with trifecta, vince is awsome.. at 25 psi it runs strong and holds 25psi all day through every gear and no problems.. ive nvr heard of any kinds of piston failure.
06-20-2010, 08:21 PM
#11
Ya, I just made it up. :-\
Here's one thread, there are others.
https://www.cobaltss.net/forums/show...t=blown+piston
>24 psi is asking for it over time. A GM Engineer posted info here several months ago.
Doesn't matter if it's HP Tuned or Trifecta or whoever. Too much heat in the cyl will blow the ring lands as I described. Use the search function.
Here's one thread, there are others.
https://www.cobaltss.net/forums/show...t=blown+piston
>24 psi is asking for it over time. A GM Engineer posted info here several months ago.
Doesn't matter if it's HP Tuned or Trifecta or whoever. Too much heat in the cyl will blow the ring lands as I described. Use the search function.
06-20-2010, 11:05 PM
#17
Just run 22 PSI. Its like screwing a pretty hot girl that doesnt have AIDS, versus 25+ PSI which is like screwing a hot ass sketchy girl that u are unsure what she has and once you have AIDS your fucked and wished you would have settled for the other less sketchy chick.
06-20-2010, 11:07 PM
#18
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how are people not getting owned by infiniboost lol. isnt that **** like 30psi. my 22.5 psi tune is more then enough to make me happy. but seriously get a turbo that flows more cfm and you wont have to worry about it
06-20-2010, 11:50 PM
#19
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boost isnt everything i have seen alot of balts on 22psi butt rape the crap out of infiniboost balts
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