dahla

what do u guys reccomend setting the boost elbow @ on these truck with the stock turbo i want to be safe and not ruin the turbo

olwhitey

ive always heard that 35psi is about it on hx35. after that it is pumpin hot air and not efficient. i got mine wastegated at 40 and it does ok when its cold here in the winter but in the summer it makes the egts climb quick.

97 D-Tec

35 is the safe zone but i had mine at 40 and left it there

Dinner

I ran mine at 32 WOT

high bid

Question:
I can't seem to get this boost figured out. Current mods in sig + adj boost elbow screwed all the way in, which should block the waste gate from opening, correct? But according to my gauge, the boost hardly ever reaches 20psi. Is there something wrong here as I would like to max boost out @ 35psi by adj the elbow. Or is it that only when towing or under load, I may see max 35psi?thanks.

can17

In addition to the boost elbow, you also need some type of electronic boost fooler. Not sure if your XZT does that????? Anyone?

dahla

don't think XZT does it you will have to get a boost fooler i got mine off ebay it is a BD boost fooler make sure your gauge is hooked in to the part of the boost fooler going into the sensor on the manifold or else you will get a false reading

high bid

I have it wired....gauges and then XZT+ then to factory connection. Any ideas? thanks.

Dinner

The XZT+ does boost fooling, so that is not the problem.

When I had just my XZT+, Air Filter and boost elbow, I could hit 32PSI if I held it at WOT for awhile. With driving around, daily driving and doing a quick acceleration, I would see around 27 I believe.

I would check all intercooler boots for cracks or cuts, tightness as well.

EDIT: This is just a thought, but if you are using an electric boost gauge the plugs inline with the the stock MAP sensor harness. It could be that since the XZT+ does boost fooling, you are only "seeing" 20psi on the gauge since that is fooling the ECM. You might actually be running 35+, its just your electric gauge is seeing what the XZT+ wants the ECM to see. Try switching the gauge plug around (if possible) so that the gauge is "infront" of the XZT+. This way the gauge will see what the MAP is reading, not what the XZT+ is reading.

jmd025

This is exactly whats happening.

high bid

Yes, exactly what has been done and the readings didn't change. Any additional thoughts? thanks.

Dinner

If your gauge is hooked in correctly, I would start checking for boost leaks, loose clamps, that sorta thing. Also check around intake manifold and intake horn for leaks.

Like even with no added fueling, boost elbow and boost fooler, these trucks are capable of running higher than 20psi pretty easily.

high bid

That's exactly what I was thinking. I'm going to engine clean everything and double check all intake connections. Not really sure where to go from here. Thanks for the help.