max safe boost for ihi turbo

[Scarface]

I know this probably a repeat question? working with a 03 lb7 with a zf6 first time this truck is tuned. did the normal injector replacement. went 20% now the truck is hitting 33 psi on street tune I built for it? now I am wondering if I need to pull back the tune some more. Setuping a day to hit the dyno this week. truck has exhaust downpipe and intake horn and ppe boost valve. I was running my mechanical boost gauge on truck

[IdahoRob]

30 is somewhat safe, 32psi and you are on borrowed time, over 32psi and it will blow up. Remove the boost valve and see how it does.

[Scarface]

thanks rob I will remove it shortly and go on a road test.

[Scarface]

I am commanding 2194 injector pulse with 170mpa of rail pressure. I can post up the tunes in a lil bit.

[THEFERMANATOR]

Get a KENNEDY boost valve and put in it. The PPE is fine for mildly modified trucks, but anything more than that and it will overboost as it is just a poor non adjusteable design. And I concur with the above numbers, hence why I capped mine at 28-29 to play it safe.

[Scarface]

I have the same feeling the stock ihi turbos are only good for about 28n psi then they become ticking time bombs. I removed the boost valve last night but the hose was brittle. so getting new hose today and go on road test to see. what psi I am going to hit with out it. thanks for the help guys.

[Scarface]

well I removed the ppe boost valve and she is hitting 26 psi now on the street tune

[Scarface]

well dynod that lb7 made 464rwhp at 25psi of boost