How much boost should a stock setup make?

[strokenred97]

I am running whats in my sig. And have my boost gauge in the MAP line. Have a slight up pipe leak but not audible. With the edge on 100 HP setting boost shoots straight up to 20 lbs and then stops or surges (I think thats what i hear).
Does this sound right? Can't find a def. answer on what stock injectors and turbo make for boost.

[Tj Krawler]

Originally Posted by strokenred97

I am running whats in my sig. And have my boost gauge in the MAP line. Have a slight up pipe leak but not audible. With the edge on 100 HP setting boost shoots straight up to 20 lbs and then stops or surges (I think thats what i hear).
Does this sound right? Can't find a def. answer on what stock injectors and turbo make for boost.

With leaky up pipes and canned tunes, 20 PSI isn't bad at all. A good custom tune will usually be in the 24-28 PSI. Maybe 30 PSI+. Depends on a lot of things... Condition of the injectors and HPOP.

[strokenred97]

thats kinda what I was thinking, but just wanted to make sure. I will be ordering the PHP Hydra soon along with bellowed up pipes and maybe WW2. Wanted to make sure I was making ok boost with what I have so far

[dannanw]

In our altitude (I'm in Colorado Springs) 20-24 is all a 7.3 will make... With stock turbo

[Im_Strokin_ur_Cummins]

I have a leak in my up pipes as well and on the tuner i get 23psi before the needle wiggles up and down i went up from 19psi to 23psi by unpluging the waste gate actuator. Sad thing is the old mans 7.3 gets 18psi stock and i get around 11psi when i run stock.

[350 ONE TON]

with the mods in my sig, with the superchip on the milage xs tune, what should I be running with the 38r? I dont have my boost gauge in yet Ive been pretty busy plus its cold here and Im a sissy Just wondered what numbers I should be seeing once i get the gauges in.

[Young-SC-Owner]

22-30 PSI .

[350 ONE TON]

Thanks!


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[Cduff]

dont mean to steal your thread or anything but how much boost is safe for the engine with out effecting reliability too much?

[Tj Krawler]

No real answer for that.

Over 40 PSI and you start pushing the limits of the stock valve springs. Over 35-40 PSI and the stock turbo life will be shortened. WW G2 might be the exception to this. I'd seriously think about studs around 40 PSI as well.