[67_C-30]

Originally Posted by mal68ibu

I just put a manifold pressure gauge on my truck today and did a little driving around with a deep half inch socket to adjust my turbo master. After a couple runs down the hiway and some cranking down on the nut, I'm pulling 9PSI at hard acceleration, and 5 PSI at cruising speed. From what I've read on the dieselplace forum those should still be pretty safe numbers, so I'm gonna drive it around like that for a while and see how that effects my fuel economy. Its has a very clear effect on my acceleration.

Yeah, 9 psi should plenty safe. Some say you can go as high 12 as long as the EGT's stay below 1100, but I'm gonna stay on this side of conservative as well. I've been moving mine around the yard and on my asphalt driveway, and with this NP435, it feels strong enough to break something with just 5 psi. I can get it rolling in first about 2 or 3 mph, and stab it kinda quick to make the turbo spool up and it breaks the rear tires loose very easily. I would think the higher boost would help mileage (as long as you keep your foot out it, which like me, seems like a problem for you). If you don't turn your fuel up anymore, it shouldn't have any adverse effects on economy.