Nature of boost delivery

[Dave]

In reality your motor being a DHY wont make a bit of difference, as your only pushing a few HP more than stock. If you gutted your exchaust/had it straight through, removed the cat, removed stock filter housing and put a decent filter on intake, and fitted a bosch pump, wound your wastegate right in, you still shouldnt be concerned unless you were pushing 24-28psi, which without doing that stuff will not let you reach that kind of boost, you will just smoke everywhere and choke.

What i'm trying to say is, have at her she's not going to snap with a little tickle like that go nuts. These engines are strong, especially if you're just getting into it, the gains are massive before issues hit. Remember people have ran these at +50% stock power, and not had an issue for 15k+ miles (I did 20k on a 28psi boosted DHY, before pulling the block and the rods/shells and everthing were all fine).

Be warned that the easy gains of turning up the boost can get addictive and thats when chasing 200+ hp gets to you and becomes costly :p but rest assured a stock XUD with no major mods only pump/blower tune will be far from mechanical failure levels - just watch temps thats all, dont sit on boost for extensive periods without letting it cool. Rule of thumb for me, mine would sit on 90 regarless most the time, serious ragging would creep to 95, and would pootle for couple mile to cool, and can do it all again.