How much boost?

[esoteric18]

How much boost can a stock 3.8 handle safetly. 120k miles so not really hoping for too much out of it. jw

[ssms5411]

Re: How much boost?

10 PSI is safe, aslong as you have supporting mods ,like Hptuners, wideband , 255 fuel pump , and injectors.

[esoteric18]

Re: How much boost?

really 10, wow thats alot more then i thought i was thinking like 5 with the mileage

[ssms5411]

Re: How much boost?

Aslong as the tune is good and air/ fuel ratio is good with no KR , you should be good with 10 PSI. Your current motor being in good condtion with no leaks. Theres people running more than 10 PSI but I would say 10 PSI is safe.

[jughead]

Re: How much boost?

My Bird is currently at Fbody Central, near Ft Meade. Shes got only 31,000. Im gunna say 12PSI be good for now. I have all those mods plus 36lbs injectors. Maybe more, suggestions?

[ssms5411]

Re: How much boost?

10+PSI aslong as you can tune it. I maxed my maf and PE at 10lbs.

[g9m1c]

Re: How much boost?

Agree with the 10psi..I wouldn't go over that on a stock motor if it's a dd

[travis brackett]

Re: How much boost?

my car has 175,000... I run 14psi...

[Blizzard242]

Re: How much boost?

A lot of it depends on the turbo size. 10psi on one turbo isn't the same as 10psi on another. I still have trouble grasping this concept myself but I've heard it a lot.

[ssms5411]

Re: How much boost?

A lot of it depends on the turbo size. 10psi on one turbo isn't the same as 10psi on another. I still have trouble grasping this concept myself but I've heard it a lot.

Its because of the A/R for the turbo ,lets say a .63 A/R compared to a .68 A/R, the .63 will spool quicker than the .68 A/R but when the same PSI is reached the bigger A/R .68 will be pushing more air since its bigger but takes longer to spool thsn than the .63 A/R. Thats the way I look at it. Or it just depends on how effiecent the turbo is journal BB or ceramic BB.

[esoteric18]

Re: How much boost?

Idk which i have, its the 10 psi one for a ls1 car. besides that i dont know much about it

[esoteric18]

Re: How much boost?

its the upgraded one so i am guessing a t67?

[ssms5411]

Re: How much boost?

the bigger one would be a T70, I'm using a GT35R which has really quick boost response.

[esoteric18]

Re: How much boost?

I was just gna rear mount for a lil while thats why i have the sts. If i end up liking the boost ill invest into a front mount

[Docta]

Re: How much boost?

Let me know if you drop that rear mount... I've been looking into one for a while.