trreed

@Dieselfuture, it gives you visual representations of how the tune will act based on the variables.

See? Told ya you'd be fine!

I had a Tahoe where I diagnosed a short like that. It's a proven method now!

Of course there's a fancy name for it

Shouldn't hurt to drive. Test your map sensor's resistance. Hook it up to some compressed air and see if the value changes as the supplied pressure increases.

Again, it's not really limp mode. Your transmission cannot lock itself into 3rd gear by itself to protect itself. What you were feeling is the map sensor is returning a static value, say 1 psi, despite the turbo actually supplying 12 to the manifold. The ECM sees that throttle position is at XX%, timing is at YY*, but MAP pressure is at 1 psi. So it takes all three of those values into the fueling tables and computes what fueling command it will send to the VP, but because MAP pressure is static, the fueling command will be wrong and the truck will be sluggish.

Autos got a HY35 to compensate for torque converter slip. It's an emissions thing. Quicker spooling turbo = fewer emissions right at takeoff. 94-98 trucks had an 8 blade HX. 98.5-02 trucks (both HX and HY models) had a 7 blade compressor wheel. 7 blade models flow more air, despite the compressor wheel being 2 mm smaller.

There won't really be a limp mode. If the map sensor is stuck reading a certain voltage, the ecm will be reading the fueling table wrong and that's why there's a loss of power. It might be the boost fooler. Take it out, clear the code, and see if it comes back.

Not related to play in the bearing housing but could be related to the sluggish feel of your truck

Mannnnnnnnnn I got my measurements backwards.

@SilverMoose Thank you for this! My end goal is to not have to open these lights up again after the retrofit is complete. So I guess it's a trip to the electronics store for me, and I gotta find that dang soldering iron.... Am I seeing the colors correctly as red, red, black, gold, brown?

I don't usually talk about things like that........... No extra hoose yet. I will have to get a regular 1/4" NPT to 1/8" elbow to replace the adjustable one. So there will be another order. I'm not worried too much about when it shows up. I have more pressing issues to deal with.

I daily a dual disk in stop and go traffic. They are easy to get used to. @dripley is right. You won't have a need for one.

Fine. Bought one as well. This message does not give me much confidence

Yes @notlimah. Take your current settings and subtract at least 1* from each of them.

Sorry, distracted by trying to find a good (preferably genuine Borg) rebuild kit.....

Let me make it more difficult than it needs to be

Hot retorques Greg.Abracadabra style for erryone

I've been considering getting one. Only holdup I'm having is it's 3" long and I don't really have a place to mount it where my wastegate line runs. And I'm pretty sure there isn't enough preload on the actuator rod and that's why its bouncy

It's all up to him now... I've only heard him talk about lighting it on fire a handful of times.

That will be the day Hell freezes over, Mike!

Looks like I'm coming down for a visit then...

It gets it from your truck! Turbo is angry, VP is angry.... Can't wait to see what else is going to get mad at me!

-6 AN on both turbos. Which is 3/8" iirc

Did a thing tonight. Had the 6x0.013’s in in just over an hour. Holy crap does this truck run smooth! There’s so much reduction in engine noise, all I can hear is the exhaust when I’m next to a wall. And all the lost noise came back as turbo whistle, so it’s win win! But of course, nothing can be easy. Yesterday I found out I'm pushing oil through a turbo. I'm betting its the secondary AGAIN. It was just rebuilt in December too.