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Well Forced Induction and myself took a road trip to Kennedy's place last saturday to help break in his new dyno.


The 3 of us spent a good 8 hrs rolling on the dyno. His new shop although not quite finished is quite a nice setup. It was actually pretty nice because no one was rushed on or off the dyno, so we got to plug and play just about every box available, except for the Banks six gun which needs a lead to the tranny that wasn't worth hooking up at the time.


So here's the numbers;


Stock 244hp/446tq Overall good numbers and pretty much consistent with everyone else's.


Predator on 65hp setting 303hp/574 close enough to stated numbers so I'm happy.


Juice Level 3 293hp/543tq not bad numbers either


Juice on 5 341/651 now we're talking some decent numbers


Hot Juice with AT level 5 370hp/751 so that only got me 127 hp vs the stated what 135? Bah!!



Of course John lead the day, with a whopping 480hp/949tq. Now those are tranny frying numbers.


All in all a fun day and big thanks to JK for letting us play and sharing his knowledge with us.


I'll let Jason post his own numbers
 

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Sounds like all the Juice #'s were low about 25hp. ???


I'm assuming the first two Juice runs you posted were regular Juice/Att and then you threw a HJAT on?
 

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Ya, that does seem low. Every time i have dynoed just the hjat, its been 180-185 extra ponies. Hmmm
 

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Pretty solid proof of the need for trans mods to get power to the road, AND the fact that the Juice modulates power to keep from zinging. Level 5 actually made less than 4 in most cases.





Same box did 450+ and 920+ on my truck IIRC.





I believe I crossed up Rick's numbers so the Juice 3 should be the 60 HP level, and Juice 5 should be 90 HP level. Jason had comparable numbers, but was a bit behind. Could be the stock exhaust.








Suffice to say, stock transmissions seldom extract the full potential from the 125HP Juice.
 

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Kennedy said:
Suffice to say, stock transmissions seldom extract the full potential from the 125HP Juice.
does that mean that the trans is slipping and is sending a request to the pcm to reduce fuel which is being intercepted by the juice and causing it to back down fuel also? 03 trucks are supposed to have some different tq. management capabilitys then earlier trucks. thanks for the answers on my previous posts J.K. as we are all in for the same reason.
 

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We had one awsome time at Johns place. And a Load Cell dyno is the only way to go. The control is great and lets the engine come to full boost and load before recording data. What a great system!
And it really works nice for warm-ups.


As for the data:


Stock: 240hp/440tq


Juice V3.5 (90hp): 320hp/640tq Pretty close to advertised.


HJAT 4 (125hp): 380hp/720tq Better than advertised


HJAT 5 (145hp): 370hp/680tq Below advertised (There is a reason for this)


As you can see my old juice box was a little low but so is my baseline compared to other trucks. I have a 100% stock exhaust which may be contributing to these numbers. The 125 Juice did great, the trans held the power which is why it produced the numbers it did. JK dyno'd at 400+ with the same box, again this could be exhaust related. As for the 145, the tranny didn't like it which is why the numbers were low. So if anyone has any doubts about the juice not reducing power when it detects a slip, think again! Looking at the dyno plot, it is clear when it added power the trans slipped and you can see the immediate reduction in power. It did not limp the trans but the TC sure did slip.


If you buy a HJAT and set it to level 5, you may be able to drive it without limping but the power will be greatly reduced. I never believed it till now. It was clear when JK hit the rollers that the trans is the problem with a hot box!



We also got to go for a spin (pun intended!!
) in Johns truck. The truck pulls EXTREMELY hard in 4th and 5th gear a forget about getting started. It would spin the wheels thru three gears and chirp 4th. Under a slow start and then full throttle it would still bark the tires in 4 gears with the ATS Co-Pilot. Unbelievable truck!!


A BIG Thanks
to John for letting Victory Red and myself try some neat boxes and showing us the difference in torque curves between various products!!
I plan on doing some testing before and after exhaust mods also. Then we'll see if that is the restriction. Or was it my 285's versus stock 245's on Red's truck??
Only the dyno will tell, or dragstrip!!<IMG onMouseOver="this.style.cursor='hand'" onMouseOut="this.style.cursor=''"
 

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good post.........
 

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There's still a LOT for me to learn about this setup, and the specifications file etc. There is also some tweaking that Superflow will be doing to see if they can smooth out the S-es at the initial start of the stes.





For the record, the spec file used was developed on my truck, and tire size used was 265-75. which of course is in between Rick's and Jason's trucks. I don't think that it factors in, only if we measure wheel slip.





2 days of commisioning/training coming up soon!








Jason, had I been thinking, we could have tried a 4.61 Juice for comparison's sake. The Attitude runs a bit stronger on low boost 5 and seems like low boost 4 compares well to the earlier non Attitude units...
 

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Ok, now that you guys got that out of the way…… How was the Prime Rib and Margaritas?
 

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Professor said:
Ok, now that you guys got that out of the way…… How was the Prime Rib and Margaritas?




Leakers left so I made fish sticks...
 

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Yes John I agree completely and was thinking the same thing. I should have tried a 4.61 box and then I could have decided on updating or not. Then again after more closely reviewing the Attitude Juice results (125hp) I should have upgraded to that!!
I still may since you have some in stock.
I want to race the truck again this year with the big tires to see how much I lost with them. Then once I get a new baseline at the strip I will think about upgrading. But I'm still a little scared that the tranny might not like the 125 in a racing environment. We might have to do the Co-Pilot experiment sooner than I think!!



Jason
 

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Forced Induction said:
Yes John I agree completely and was thinking the same thing. I should have tried a 4.61 box and then I could have decided on updating or not. Then again after more closely reviewing the Attitude Juice results (125hp) I should have upgraded to that!!
I still may since you have some in stock.
I want to race the truck again this year with the big tires to see how much I lost with them. Then once I get a new baseline at the strip I will think about upgrading. But I'm still a little scared that the tranny might not like the 125 in a racing environment. We might have to do the Co-Pilot experiment sooner than I think!!



Jason




Yeah the Attitude units appear to be the strongest, but definitely need transmission mods to hold the level 5!


The copilot test would be quite simple as it doen't require dropping the trans.





Thinking I may need to order some ear plugs to have around also. Particularly for those who stand in front of my truck...
 

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I know exactly what you mean about your truck!!
Did you get the video?? Sounds pretty loud!!


Now I can't wait for the track to open to start racing again. Keep a box on tap for me!!
 

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Still working on getting the video opened/ viewed...
 
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