Honda and Acura Car Forums banner

1 - 3 of 3 Posts

·
Registered
Joined
·
48 Posts
Discussion Starter #1
How much PSI can a stock LS take. ive been told the stock map will only accept 10.5 PSI. My buddy stuck a really big turbo on it with a 5 LB spring BOV. He was getting it tuned and the guy said he told it to stop at 8 PSI but it continued to spool till 9 PSI so he stopped cause he wasnt sure where it would stop spooling.
 

·
Registered
Joined
·
3,077 Posts
PSI is virtually meaningless. What you should know is Lbs/min, which is the actual flow the turbocharger is capable of providing, after that you can decide what "PSI" you should be running at.

There is also no set "hp/tq" ANY stock engine can handle. Everyones engine will behave a bit differently, parts will usually be different, and most importantly the efficency of the engine will vary. The more efficient the engine is at evacuating exhaust the more power it can make with the same ammount of air and fuel.

A tuner is the key to unlocking the most power out of a build without causing lonjevity issues, the better the tuner is the more reliable your engine should run under its new modifications. Don't expect too much more than a stock turbocharged engine of equivelant displacement.

You should read this. http://www.sdsefi.com/meltdown.htm

Also if theres a rather large turbo on it the waste gate/BOV combo may not be large enough to control the air flow the turbocharger is producing.
 

·
Registered
Joined
·
11 Posts
Not sure how much boost your LS block itself can handle, but stock Honda MAP sensors read up to exactly 10.66 PSI. I wouldn't recommend even tuning for 10 PSI using the stock MAP.. You are too much at risk for overboosting your MAP and blowing up your setup.

The amount of "PSI" your block can handle all depends on the size turbo... If you use a small turbo you can push more PSI than with a bigger one.
 
1 - 3 of 3 Posts
Top