PDR35 report and driving the DTT Auto

[SnoKing]

We are in the first week of a 7 week RV trip. Currently in Bozeman, Mt, so I have had a chance to test the PDR35/12W turbo upgrade from last years HY35. EGTs seem to be in much better check, but I still have to drive the pyro gauge. In overdrive I have enough power to run EGT past 1200, in 3rd I seem to be pulling good size passes at 51-52 MPH at 1100 degrees.



I thought I might take a minute to talk about how I drive the DTT transmission and smart controller. I have the power to the smart controller and Banks brake on an old style headlight switch for my left foot.



I manually drive the OD button towing and have the controller set to shift up at around 43 MPH, but again do not allow it to up shift until around 55 MPH when coming up to speed. Note Truck and Trailer scale at 19K+. If I set it to auto select OD at the same 55 range it creates driving issues while slowing down. NOTE Lock to Lock shifts are FIRM!!!!!! So when slowing and on the exhaust brake in OD and ready to go a gear lower, I give it a little throttle as I punch it out of OD and then go back on the Exhaust brake. If the smart controller is set in the mid 50's then the auto downshift out of OD is to ruff, AKA very firm!!!!



If I need to go down into 2nd gear coming down a hill then, I turn the smart controller off (foot switch), shift down and they turn the power back on, to go onto the exhaust brake. Upshifting from 2nd manually to third works alot better with the smart controller off also, as I think that this could break something. I have billet input and 2nd gear cage, but output shaft is stock.



Mileage with the new VP44 is in the 12. 5 MPG range so far.



So all of this gives we something to do while driving. BTW the hill down into Lewiston ID on 95 South is a good test of the exhaust brake. Went down into 2nd of the bottom part.



SNOKING

 

[Tinman]

How much power do you think you are putting out? I have DDIIs with a powerpack ottomind and and a PDR35/14. It runs good, but the DDIIs are a little smokey for me. I am thinking of going to a 12cm housing and back to RV275. Better mileage, better spool, less smoke. Just wondering how much a PDR35/12 would safely handle.

 

[SnoKing]

With Hy35 I was at 283/596, most likely at 300 and 625+ with PRD35. Very little smoke with Jammer 1's. SNOKING

 

[SnoKing]

I turned the boost up a bit on the turbo and that seems to have lower OD EGTs. SNOKING

 

[PKnoerzer]

I appreciate the insight on driving with the locked up auto. I have an ATS set up with their converter and Co-Pilot. This allows shifting while locked up too and it is real harsh when towing. Like you I worry about breaking something else in the drivetrain.

 

[SnoKing]

How much power do you think you are putting out? I have DDIIs with a powerpack ottomind and and a PDR35/14. It runs good, but the DDIIs are a little smokey for me. I am thinking of going to a 12cm housing and back to RV275. Better mileage, better spool, less smoke. Just wondering how much a PDR35/12 would safely handle.

As I posted in another string, I found that that my throttle pedal was not giving full travel to the apps. I juryrigged some spacers on the pedal end of the cable and have more power than I ever have had. Dyno nmber look suspect now. SNOKING

 

[Tinman]

As I posted in another string, I found that that my throttle pedal was not giving full travel to the apps. I juryrigged some spacers on the pedal end of the cable and have more power than I ever have had. Dyno nmber look suspect now. SNOKING

That's very interesting. I got an OBD for the wifes Libby the other day. Hooked it up my the truck to play around a bit. On the TPS setting, I could only get to about 75% with me standing on it, according to the OBD. I'll have to look into this.