Normally the stock turbo will naturally fall off from peak boost in a gradual taper to red line

With a nice MBC like the Hallman it will taper about 1 - 1.5 psi to red line

 

I boost to 27 psi to redline and taper all the way to 21 at redline. Could I have a slight boost leak?

Shane

 

I heard the stock turbo is good for about 28psi max and the stock block can handle 32psi max.

 

The capacity of the stock block is very dependant on the state of tune and type of turbo used

 

hey Al, i dynoflashed, other than that basically my car is stock, if i boost up to 21 psi, what would be my whp on estimate???

 

I would suggest you try two things

1 - a boost leak test

2 - tighten up the wate gate actuator a bit and see if it holds boost better

I am actually working on a upgraded wastegate actuator piston set up fo rthe evo. Few people realize the amazing boost the stock turbos can make if they are set up the right way.

 

Average range is 250 - 260 on stock evos with just the Dyno Flash and K & N

Stock is 210 - 240 on our dyno

 

cool

 

What type of dyno do you run?

 

Dynojet

 

AL, when i get the MBC and set @ 21 psi, do i need a walbro fuel pump and a reflash??

 

Need - NO

Suggested - yes

 

wow.. SOMEBODY knows their stuff!

 

Hell yea, Al's the man!

 

Al what is the max boost level one can run with a mail in flash stock block, stock studs and c16. I was hoping for 25psi for the track is this attainable?