What turbos are working good so far with TST PMCR?

[Blacksdieselhp]

Well, I got the tst installed and really want to burn all that fuel coming out the tail pipe. What turbos have you guys tried? Give me some #'s if you have them. I will be towing with the truck, so I don't want anything real laggy. But still would like to support some of the high end power. I guess I'm probably slowly talking myself into twins like I did before. I would really like to go with a single on this truck though. Let me know what you got. Thanks for the info.

 

[hotram03]

I'm running the DD Jammer on mine I turn it to 2/4 mostly, If I go to 3/4 egt's hit 1600, on 2/4 they hit 1480 roughly. Truck made 451 rwh and 883 tq before the box was put on. TWINS is the only answer I see at my stage, that and o-ringing, studs, $$$$$$$$ LOL

 

[MCummings]

Our '55 has held up very, very well in our testing with a TST CR and 100HP injectors. We've logged 20,000 miles and Zero turbo problems...



Merrick

 

[Digger]

Merrick,

What are the boost #'s? What is the lag like? What do you see egt wise at WOT? How much?



Thanks

digger

 

[OT-OF-HERE!!]

Originally posted by MCummings

Our '55 has held up very, very well in our testing with a TST CR and 100HP injectors. We've logged 20,000 miles and Zero turbo problems...



Merrick

What levels are you running it at?

 

[ThomasLawrence]

I'm running the DD Jammer on mine I turn it to 2/4 mostly, If I go to 3/4 egt's hit 1600, on 2/4 they hit 1480 roughly.

I'm also running a Jammer. I'm currently running the TST on 7/3, with my EZ on lvl 4. I hit 1200° once, on a long WOT run up a slight grade from a standstill to about 90MPH. I have the TST set to defuel at 1250°, and haven't hit it yet (though I usually don't run at WOT - just too damn scary on the highways )



Wednesday is dyno day for me, so I should have a lot more info. after that.



-Tom

 

[XcumminsX]

So it seems like the edge ez really does help cool down the tst??



Nick

 

[daytripper63]

So it seems like the edge ez really does help cool down the tst??

I dont get it?

How can more fuel cool EGTs?

Anyone care to explain

 

[jwilliams3]

Fuel delivery timing.



--Justin

 

[SRadke]

The edge EZ does not change timing, only the TST does. What the edge does is feed an erroneous boost reading to the TST as part of it's "boost fooling" feature thus causing the TST to not fuel as heavily. It's not neccesarily more fuel, it's just delivered diffrently. This also depends which box is hooked first in line on the MAP sensor.



-Scott

 

[ThomasLawrence]

What the edge does is feed an erroneous boost reading to the TST as part of it's "boost fooling" feature thus causing the TST to not fuel as heavily.

No, not true (in this case, at least). I have the TST connected to the MAP sensor, so it's seeing the actual boost pressure. The EZ is between the TST and the ECM, so it's the EZ that is seeing the modified boost values.



What's happening is that the higher rail pressure is causing more fuel to be delivered sooner, which allows you to dial back the TST box and still achieve the same overall amount of fuel per charge, it's just that it's getting in quicker than it would with the TST alone. It's this reduction in duration that makes for the lower EGT's.



Notice that I only have the torque enhancement at level 3. The TE setting is the real EGT enemy here... lots of fuel at low RPM and low boost equals high EGTs.



Again, I'll have more definitive data on Wednesday... I plan on doing lots of dyno runs with various combinations of TST and EZ settings, and record max EGT's with each run.



-Tom

 

[mattymac]

finally we will get some good data on this touchy subject. I have also heard stacking EZ first makes good power too. I know Mark at TST says PMCR should be first but since you are going to be messing with this flip them and see what happens as well. I think it was Bcarmichle <? that said the set up made lots of power hooked like this as well because he could see the boost fooling on his TST and it delayed or maybe just detuned the power of the TST for egt's. Just some food for thought, try it and let us know!

 

[banshee]

I stacked my TST and EZ together, but I had to go with the EZ into the block and the TST into the EZ. I tried the TST into the block first, but it gave a bad stumble and threw code P0204 (#4 injector circuit... probably where the stumble was coming from). With the EZ 1st the power is up and it runs very smooth. It must be working, too... it slipped my clutch on 2/2 in 6th, and in 3rd gear on 5/5. I'm keeping it down until the DD clutch goes in. Not sure how the rest of you guys are stacking, but for me it had to go that way.



John