Dave88LX

I got the Autometer 2 1/16" Phantom series 0-60 PSI boost gauge & 0-1600* EGT gauge hooked up.

1st gear hits 15 PSI
2nd gear hits 25 PSI
3rd gear hits 30-35 PSI
4th & 5th gears jump all the way up to 41 PSI. When it's up there, the Pyro's hitting up to 1500* before I let off. Driving around normal it's fine though.

What gives? The boost gauge is straight forward...port to the gauge, so either something's reading wrong, or my truck is making massive boost?

It's a 283K mile 5-speed, #10 fuel plate (But the guy I got it from said it wasn't slid forward), BHAF, and straight-out 4" exhaust. Nothing else that I can think of or know of.

Any ideas?

Austin'sDodge

Buddies truck did that with a number 11 plate.

Dave88LX

#11? Or was that a typo for #10? So that's normal?!? Wow. I thought the stock turbo was only good for 35 PSI though?

infidel

With the wastegate blocked and a #10 it sounds about normal.
A bigger turbo housing will get your egts down.

Austin'sDodge

He had upgraded to a 16cm housing.

Dave88LX

I don't know if the wastegate is blocked or not. I've heard of people doing that though, I know my buddy did on his 24V. How do I check?

1ST GEN.

Your wastegate is bound to be blocked to be able to push 41 psi, and if it isn't definatly don't block it unless you want to buy a turbo

satburn

Doesn't sound out of range for your setup. I've got a setup similar to yours and I peg my 30lbs gauge in 3rd gear and up. I can also peg the pyro at 1500 degrees as well. My plate is almost full forward, I got an orrifice to replace my stock one and it has a smaller diameter hole, you might pull your hose off and see if you have the same.

Dave88LX

What orifice?

TxDiesel007

Sounds ok Dave

Glad ur enjoyin ur gauges

Tx

satburn

The part that says: "Barbed Hose Fitting"

Dave88LX

Normal huh? Well that's good. I thought this thing was a freak for a bit.

Thanks for the pic, that helps a ton! I noticed somewhere around there, I have a fitting that's got sealant exposed on the threads (obviously someone messed with it). I'll have to pop it off early next week to see exactly what mod was done inside there. Thanks!!

Is this the fitting here with the elbow, allen set screw/ fresh thread sealant? Is that allen screw to regulate whatever?

MasseyMan1089

I spike my Autometer Phantom at 35lbs. Maybe I should get a higher psi one? How much was the 0-60psi Dave? Pm me...

SHARPMACHINE

That (in the pic) is the boost fitting that comes with a torque plate "kit".

I bet you were a bit nervous when you seen that your truck could hit 1500. How many times did it go to 1500+ before the gages?????

Food for thought = most people on here suggest adjusting that fitting (their is a set screw in it that can be adjusted) in the picture so that you max out at 35 psi of boost. I don't know if this would lower your temps or not. There was a thread on here by wannadiesel (try searching "housing wastegate mod") that would drop pyro temps by 100-200 degrees.

good luck and keep us informed.

CTD NUT

Dropping peak boost down to 35 psi will pick up some power, drop some egt and preserve the life of the turbo.....occasional spikes past 35 psi are fine but in this instance, that is not the case. 41 psi is too much boost for a 12cm HX35 and is counter productive to making good power.....
A #10 plate forward on a 215 pump will deliver lots of fuel and will probably not matter if the waste gate is actually blocked or if the boost elbow is used......the results will be the same : the turbo will overspeed and overpower the wastegate even if the boost elbow is used. A way to overcome this with the stock HX35 is to drill an extra hole that allows the turbo to waste gate all 6 cylinders instead of just 3.....this will be only way to control boost at this fueling level with the stock HX35. A better way would be to consider a 14cm exhaust housing with all 6 cylinders gated.....you'll get much more egt control and a power gain too.