Right now mine is unregulated, and it creates enough drive pressure to open the gate, and the flange conveniently opens at the same time, causing the charger to surge. The boost gauge looks like a fuel pressure gauge with no snubber LOL I just gotta make the gate boost referenced, and I may put an orifice in the flange reference depending on how high drive pressure gets.
I've noticed mine surges too, around 20-25 psi or so. I think the flapper is cracking open a bit too soon.
I think it opens, so boost falls off a little, so it closes, builds boost back up, then opens, etc...., and does all this super fast so the gauge actually rattles.
That combined with the gate opening at the same time because it's drive pressure referenced doesn't help.
If I'm hammering through it though I don't have an issue, just shoots to 60psi.
I think it opens, so boost falls off a little, so it closes, builds boost back up, then opens, etc...., and does all this super fast so the gauge actually rattles.
That combined with the gate opening at the same time because it's drive pressure referenced doesn't help.
If I'm hammering through it though I don't have an issue, just shoots to 60psi.
550-600. depends on if uphill or not. Of course, I just realized it was only 50* out today, but still a far drop from 700+
Dude my cruising egts are like 900. Any throttle increase or hill and its 1200+:doh:
yea, when it surges, the boost gauge flutters like crazy lol.
I'm really not liking this 66/ spool flange combination on this truck. I don't know what the heck is wrong with this thing.
Yea... Well rest assured you have cooler cruising egts than my truck with more powaz!
I'd love to look at your truck if you were closer. I still think your problem is simple, and once you figure it out we'll all slap ourselves.
But your's is in 64x better shape than mine.
With a spool flange and 66?!
Gotta be boost leaks or AFC related, or timing. Those temps are crazy.