Couple of dyno'ing questions...
05-02-2007, 01:40 PM
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Couple of dyno'ing questions...
Ok fellas, I got the Hot upgrade today for the Edge and got in contact with a shop out of Chula Vista that has a Dynojet, so I am going to be putting the truck on the rollers in the next couple weeks. My questions are:
1.) Is there any downsides to dyno'ing in Tow/Haul mode? It locks the converter MUCH earlier and if I just slowly roll into the gas until it's all the way to the floor, it doesn't downshift, so I should probably get the best curve that way, right?
2.) Should I dyno in 3rd gear, or overdrive?
Remember, I'm on the stock tranny...so any insight would be greatly appreciated.
1.) Is there any downsides to dyno'ing in Tow/Haul mode? It locks the converter MUCH earlier and if I just slowly roll into the gas until it's all the way to the floor, it doesn't downshift, so I should probably get the best curve that way, right?
2.) Should I dyno in 3rd gear, or overdrive?
Remember, I'm on the stock tranny...so any insight would be greatly appreciated.
05-02-2007, 09:44 PM
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Nobody's got any good insight as to the most effective means to get the best numbers out of a stock tranny on a modded Cummins 
I want to get ya'll some Puck/Hot Juice hp numbers on a base stock everything else '06...
I want to get ya'll some Puck/Hot Juice hp numbers on a base stock everything else '06...
05-02-2007, 09:55 PM
#3
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I was told by dyno owners that do lot of diesels that diesel autos should dyno in OD. Without a tc lockup switch it is a little hard to get a good pull without down shifting. I have dyno'd both in 3rd and OD and did not really see much difference in the overall numbers either way.
Before my lockup button, I would just accelerate normal to get to OD and lockup keep speed above 65 and then start pull rolling into the throttle to WOT not just nailing it. This would keep it from down shifting.
Not sure how the 4.10 gear will effect down shifting if any.
Before my lockup button, I would just accelerate normal to get to OD and lockup keep speed above 65 and then start pull rolling into the throttle to WOT not just nailing it. This would keep it from down shifting.
Not sure how the 4.10 gear will effect down shifting if any.
05-02-2007, 10:05 PM
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I was told by dyno owners that do lot of diesels that diesel autos should dyno in OD. Without a tc lockup switch it is a little hard to get a good pull without down shifting. I have dyno'd both in 3rd and OD and did not really see much difference in the overall numbers either way.
Before my lockup button, I would just accelerate normal to get to OD and lockup keep speed above 65 and then start pull rolling into the throttle to WOT not just nailing it. This would keep it from down shifting.
Not sure how the 4.10 gear will effect down shifting if any.
Before my lockup button, I would just accelerate normal to get to OD and lockup keep speed above 65 and then start pull rolling into the throttle to WOT not just nailing it. This would keep it from down shifting.
Not sure how the 4.10 gear will effect down shifting if any.
05-02-2007, 10:08 PM
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On a dynojet dyno I have always had great luck by running my truck up to 70mph in OVERDRIVE..........then floor it and hold it to around 120mph.
If you go less than 70, it risks shifting down and messing up the run. My tranny is stock.
http://www.riegerweb.com/Nortex_DTR/...I/TexasCTD.WMV
Personally, I haven't had good luck on the one Mustang dyno I was on. But I was told you need to dyno in 3rd.....1 to 1 ratio....on those.
Currently, with just a Smarty on 9........im at 466hp/915tq.
If you go less than 70, it risks shifting down and messing up the run. My tranny is stock.
http://www.riegerweb.com/Nortex_DTR/...I/TexasCTD.WMV
Personally, I haven't had good luck on the one Mustang dyno I was on. But I was told you need to dyno in 3rd.....1 to 1 ratio....on those.
Currently, with just a Smarty on 9........im at 466hp/915tq.
05-02-2007, 10:12 PM
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On a dynojet dyno I have always had great luck by running my truck up to 70mph in OVERDRIVE..........then floor it and hold it to around 120mph.
If you go less than 70, it risks shifting down and messing up the run. My tranny is stock.
http://www.riegerweb.com/Nortex_DTR/...I/TexasCTD.WMV
Personally, I haven't had good luck on the one Mustang dyno I was on. But I was told you need to dyno in 3rd.....1 to 1 ratio....on those.
Currently, with just a Smarty on 9........im at 466hp/915tq.
If you go less than 70, it risks shifting down and messing up the run. My tranny is stock.
http://www.riegerweb.com/Nortex_DTR/...I/TexasCTD.WMV
Personally, I haven't had good luck on the one Mustang dyno I was on. But I was told you need to dyno in 3rd.....1 to 1 ratio....on those.
Currently, with just a Smarty on 9........im at 466hp/915tq.
I can't wait. I just want to see where this stack has put me. It will be a week and a half or two, but I will let ya'll know!
05-02-2007, 10:25 PM
#7
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Well your 4.10s will change your top speed for sure, but I would still try to get to OD and locked and then ease into the pull. From my experience if you stay above 65mph and then start pull it will not down shift, or not as likely to. On a dynojet you will probably see higher mph than you can actually see on the road.
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05-02-2007, 10:27 PM
#8
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Yeah, I guess with the 4.10s you would have to slow down accordingly. Before you go dyno again, just practice some WOT runs on the highway and see at what speed you need to be at to NOT shift down out of O/D. 65 maybe? 60?
On the dynojet, you just want to make sure you are in o/d and not let it shift down.
On the dynojet, you just want to make sure you are in o/d and not let it shift down.
05-02-2007, 10:45 PM
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Thanks for the advice ya'll! Man, going from Edge, to Edge with Puck was a jump, but that Hot upgrade REALLY was big...it's VERY obvious that I am going to have to keep her turned down Can't WAIT for my tranny...I'll keep ya'll posted!
Can't WAIT for my tranny...I'll keep ya'll posted!
05-02-2007, 10:51 PM
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Well you are at a fueling level that will tax the lift pump to keep up with fuel to the cp3. Stock turbo and tc/tranny will also be stressed pretty hard. You might have trouble with slipping tc on the rollers.
05-02-2007, 11:30 PM
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the guy who dynoed my trk turned the tow/haul on. he said thats how the dyno stuff. this was on a load cell dynojet. It was just to see where its at I plan to dyno again this summer at the tst dyno day or somewhere local
05-02-2007, 11:38 PM
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The last few runs we did on my truck was in OD, worked much better in my case anyways. Seemed to be able to get better traction on the wheels. I was able to get over 50 lbs of boost that way
Kevin
Kevin
05-03-2007, 12:36 AM
#15
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It varies from place to place. I would guess most places are in the $50.00-$60.00 range for 3 runs.
If you can go to a "Dyno Day" event with a bunch of other trucks, you may save a little more.
My experience has been very positive and consistent with Dyno Jet Dynos.
If you can go to a "Dyno Day" event with a bunch of other trucks, you may save a little more.
My experience has been very positive and consistent with Dyno Jet Dynos.