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True HX35

Posted

My 2000 has a non wastegated HX35. I rarely see over 10-12 psi, if I’m loaded heavy I might see 18-19. I’m gonna dig in and see where my issues is (test for boost leaks, adjust the Smarty). Anyone running a true HX35 like this? Was this even available on a 24V auto in 2000? I’ve never seen over 20 psi loaded down at wot. Feel like I’m missing some cheap performance somewhere. Stock injectors. Raptor LP.

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On 11/28/2021 at 11:04 AM, Andyba20 said:

never seen over 20 psi loaded down at wot

Any chance your gauge is just off? Electric gauge or pneumatic?

How many miles are on those stock injectors?

Do you have good lift pump pressure?

Do you feel like the truck is underperforming?

If you didn't have a boost gauge would you think anything is wrong?

Is the truck blowing smoke?

On 11/28/2021 at 11:04 AM, Andyba20 said:

never seen over 20 psi loaded down at wot

 

On 11/28/2021 at 11:04 AM, Andyba20 said:

never seen over 20 psi loaded down at wot

 

On 11/28/2021 at 11:04 AM, Andyba20 said:

never seen over 20 psi loaded down at wot

 

On 11/28/2021 at 11:04 AM, Andyba20 said:

never seen over 20 psi loaded down at wot

 

On 11/28/2021 at 11:04 AM, Andyba20 said:

never seen over 20 psi loaded down at wot

 

It is going to take a long time to answer all those questions.

 

Good questions, though.

 

- John

11 hours ago, LorenS said:

Edited 10 hours ago by IBMobile
remove repetition

Ha ha ha!  Yeah, it never posted while I was watching so I kept hitting "Submit Reply" and finally gave up and went to bed.  I guess they ALL finally went through!  Sorry about that.

  • 3 weeks later...

Not sure why these guys think your boost numbers are off.

Far as I can tell your fueled like stock.

I doubt the smarty will increase much at all.

 

If injectors are realy old they will also contribute to low psi.

 

 

On 11/28/2021 at 11:04 AM, Andyba20 said:

My 2000 has a non wastegated HX35.

On 11/28/2021 at 11:04 AM, Andyba20 said:

I’ve never seen over 20 psi loaded down at wot.

 

8 hours ago, Evan said:

Not sure why these guys think your boost numbers are off.

 

I doubt the smarty will increase much at all.

 

If injectors are realy old they will also contribute to low psi.

 

If everything is working normal, I would think well over 20 psi boost should easily be attained at wide open throttle with a loaded truck on a Smarty tune.

 

My truck has an HX35 with a blocked wastegate and I could easily attain 30 psi boost by 1800 rpm's on a mild Smarty tune when I had 300,000 miles on the OEM injectors.

 

Something is amiss.

 

- John

 

 

 

  • Owner

One thing to remember about building boost...

 

More retard timing will build boost quicker and more boost pressure. More timing advancement the slower to build boost and less boost pressure. The whole trick is to have the retard in the right spot build quickly and the flip back to advancement. One of the few limitations to Smarty S03.

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Welcome To Mopar1973Man.Com LLC

We are privately owned, with access to a professional Diesel Mechanic, who can provide additional support for Dodge Ram Cummins Diesel vehicles. Many detailed information is FREE and available to read. However, in order to interact directly with our Diesel Mechanic, Michael, by phone, via zoom, or as the web-based option, Subscription Plans are offered that will enable these and other features.  Go to the Subscription Page and Select a desired plan. At any time you wish to cancel the Subscription, click Subscription Page, select the 'Cancel' button, and it will be canceled. For your convenience, all subscriptions are on auto-renewal.