At idle I am showing 2-4% engine load. I can't remember but I think that means my injectors are getting wore out??

Yep

 

 

What is the load supposed to be at?

When engine load drop near zero injectors are wore out. Once it drops to zero the engine idle will rise. Like with summer heat my idle is back to 13% engine load again.

 

Pop pressure will dictate what engine load percentage. Lower the pop pressure the lower the engine load. Like 310 bar is roughly 7 to 9%. Like my 320 bar injectors are 11 to 13%

 

As for you down at 2 or 3% is roughly 260 bar which is below 293 minimum pop pressure.

 

Edited June 4, 20205 yr by Mopar1973Man

What would a good injector be for me? Size and pop pressure? Vco or sac.   Mostko towing or hauling and some daily driving.  Stock trans but can I tune down the power with the quad enough to not blow my trans with some 150hp injectors??

Bosch RV275 injectors.

 

https://www.dieselautopower.com/bosch-new-injector-rv275-marine-300-40hp-0432193635

Do these rules apply to large injectors like 7x012s? When I first start the truck it's around 10%, but then fluctuates from 2-6 when warm

Yes. Im 7 x0.010 injectors. But I'm popped higher at 320 bar. You most likely popped at 305 bar which give very little margin being 293 bar is bottom.

Any idea on low I can go with say 150 hp injectors on the quad and still run good and not have crazy egts.  Or just not doable?

I keep fairly cool with proper tuning and 7x012s. Hx35 maxes out pretty quick if not careful. Cruising I get around 700egts at 70-75. Granted I haven't tried towing anything extra heavy. Plan to upgrade turbo at some point, but fairly happy with the current spool and power. 

On 6/6/2020 at 5:50 PM, Unreal Summit said:

Any idea on low I can go with say 150 hp injectors on the quad and still run good and not have crazy egts.  Or just not doable?

 

I just ran from New Meadows, ID to Mohave Valley, AZ and travelled 1,800 miles there and back. My towing tune did extremely well and could possibly reach 14 MPG. EGT's on level 3 of the Quadzilla I would run just right at 1,100 to 1,200*F EGT's pulling 6 and 7% grades cruise set for 65 MPH. I'm not running a standard 7 x 0.010 but had it popped to 320 bar. Clean running very rare is a puff of smoke but just haze if your deep in the power. Even with day time temps at 105*F no issues when I left. Towing a 31 foot Jayco Eagle RV and scale out at 17,300 pound GCW.

 

Warning my towing tune is running some high timing and highly suggested to have studs. 

Edited June 8, 20205 yr by Mopar1973Man