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OnlineAutoram
Dodge Dakota
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9/10/2005
11:04:57
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 Subject: My DYNO Run Yesterday: Video / Pictures.
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Hey Guys.
I had my 2005 4.7l Dodge Dakota Dyno'ed Yesterday.
Best Test Results were 188.80 Rear wheel HP and 258.46 Max Torque.
We figured 175HP as the Stock Rear Wheel HP on the 2005 Dodge Dakota 4.7L so I've gained 12-14 HP.
You can find the Videos and Pictures at the link below.
http://www.onlineautorama.com/forum/showthread.php?t=539
I didnt feel like uploading the Videos and Pictures a 3rd time so sorry for you having to click the link to view the videos and pictures.
Let me know what your thoughts are and if you have any questions please let me know.
Once I get my Intake, True Duals and Superchip (If one ever gets released) My results should be a lot better.
We actually ran it like 5 times and tried several combinations of trying to see which is the best way to get the best #'s. We tried 2nd gear and no OD and it hit the limiter to quick he said to get a proper reading.
"The tech said that there was an 8 second delay before the truck would let loose of it's power" He said this is by the Dodge and the restrictions they have placed on the truck. He also suggested getting a programmer as soon as I can because theres a lot of power being locked up and not being released.
I asked him which programmer to get and I suggested Superchip, which is the one i've always used or have used twice, He laughed and said SuperChips are junk, so i asked him again and he gave me the name of a Guy in California which i can't remember his name but he works for "Z Industries". He says he does all the major programming for these MFG but he's not allowed to admit it. But he does programming on the side, He said there was a one day turn around, I send my computer to this guy, he reprograms my computer and sends it back to me next day. I'll have to call the tech back and get this guy name that does this out in Cali and see if i can contact him but to tell ya the truth I'd rather still have a superchip just for the programming of it so i dont have to use 92oct all the time and beable to adjust for tire sizes and tow modes.
But anyway I thought the #'s were going to be higher myself and was alittle disappointed.
Thanks for stopping by and if you got any questions or thoughts please let me know.
Jim.
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Kowalski
GenIII
9/10/2005
11:23:48
|  RE: My DYNO Run Yesterday: Video / Pictures.
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Had my PCM reflashed by someone in Cali, wonder if its same person ? Found I only really need to run high test for towing; no problems with pinging on regular otherwise - but results on different trucks and different flashes can vary. Very pleased with the flash I got; commonly called the "Mike Leach" flash. Don't think its available for the newer trucks though; your contact is probably different.
How did you figure stock HP; and what are your mods so far ?
Lead, follow, or get out of the way
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TexasTodd
Dodge Dakota
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9/10/2005
15:34:03
|  RE: My DYNO Run Yesterday: Video / Pictures.
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ahem, those are some low rw #'s.
2nd gear?
Did this genius tell you, that you're supposed to run the gear that's 1:1 in the tranny? And no matter what others may say, your rear end gears WILL change your #'s a bit. But you're ALWAYS supposed to use the 1:1 gear of the tranny.
Other wise, your #'s are bunk.
I'm pretty sure your an auto kind of guy, so the auto, if I'm not mistaken, should be in 3rd, with the OD off. I dunno, ain't got an auto.
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intense blue
Dodge Dakota
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9/10/2005
21:17:20
| RE: My DYNO Run Yesterday: Video / Pictures.
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If my memory serves my right, the 4.7 is a five speed auto, so he'd need to be in fourth to achieve a 1:1 ratio. But anyway, those numbers don't seem too far off. All a lower gear ratio would do is lower hp and increase torque. I suppose those numbers would be easily corrected mathematically, and I'd be surprised if the dyno doesn't take the gear ratio into consideration when calculating #s.
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FLDak
Dodge Dakota
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9/10/2005
22:50:02
| RE: My DYNO Run Yesterday: Video / Pictures.
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Yeah, mine is an auto and this is what I do when I dyno my truck:
O/D off and put it in drive.
Easy on the gas to let it shift through the gears.
Get up to about 2500rpm. Give the signal to the dyno tech, and then roll into the throttle making sure you don't kick down into passing gear.
Then just ease the pedal to the floor and hold it there until about 5500-6000 rpm. Then your done with that run!
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OnlineAutoram
Dodge Dakota
JOIN HERE
9/11/2005
12:22:35
| RE: My DYNO Run Yesterday: Video / Pictures.
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Hi guys thanks for coming by.
I thought they were pretty low #'s as well.
We tried the run several different ways.
If you watch the 4 videos,.... You can see the runs that we did. 2nd gear no OD. 3rd gear no OD etc.
The #'s ranged from nothing and worst run recorded was 186.98hp, 187.44hp, 188.80 and I didnt get the #'s from the other runs. Only the top 3.
I was just checking K&N Website about a week ago and they now have an Intake Kit for the `05 Dakota 4.7L. The Kit can be found at http://www.knfilters.com/search/product.aspx?Prod=77-1546KP
But anyway look at their Dyno Run located here. http://www.kandn.com/dynocharts/77-1546.pdf
They (K&N) rate the 2005 Dakota 4.7L stock at 176.08hp, this must be a non HO 4.7l Engine. K&N also says that they did their test in 2nd gear, It doesnt say if it was with or without OD.
So i feel that the test that we ran was accurate.
Are these Crappy #'s? Hell yeah!
I agree, But the mods that I have added have increased the HP above stock so I'm going in the right direction and fairly happy even though the #'s arnt as high as i'd had wished.
So theres about a 31% Loss thru the drivetrain going off K&N Dyno Sheet. My 188.80 x 31% = 247.32HP vs. having a stock 230hp so i'm almost at the rate that the 4.7L HO is rated at just by adding the same dollar amount in mods vs. just buying the Dakota with the 4.7l HO Engine.
Believe me, if there was an HO Dakota out on the lot when i bought mine i would have probably spent the money just for the HO Engine and would have added the same mods to it, but there was no HO Dakotas out at that time.
So this is about all, If you have any other questions please let me know.
Jim.
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question
Dodge Dakota
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9/11/2005
13:31:47
|  RE: My DYNO Run Yesterday: Video / Pictures.
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You keep talking about your mods, but don't say what mods you have...
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OnlineAutoram
Dodge Dakota
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9/11/2005
14:07:06
| RE: My DYNO Run Yesterday: Video / Pictures.
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Flowmaster SI/DO Delta Flow 40 Muffler, K&N Drop In, F&B 70mm Throttle Body.
Ture Flow Intake Kit has been ordered 10 Days ago but i havent received it yet. It should have been here late last week but didnt get it, so I expect it this week for sure. ( I Hope )
I'm saving right now for two Flowmaster Delta Flow 40 Mufflers and the cost of the install so that I can go True Duals.
If you have any other questions please let me know.
Jim.
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OnlineAutoram
Dodge Dakota
JOIN HERE
9/11/2005
14:09:31
| RE: My DYNO Run Yesterday: Video / Pictures.
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OH CRAP...
I Forgot JBA Headers to.
Jim.
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dewey
Dodge Dakota
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9/11/2005
19:06:42
| RE: My DYNO Run Yesterday: Video / Pictures.
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JIM,
No true duals on the 4.7L it needs backpressure to perform otherwise you rob the HP. I know I have 348 rear wheel HP. THats 450+ to the fly. Single exhaust.
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OnlineAutoram
Dodge Dakota
JOIN HERE
9/11/2005
20:33:26
| RE: My DYNO Run Yesterday: Video / Pictures.
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Hey "Dewey" thanks for coming by.
The reason i was interested in going true duals is because of the crazy Y-Pipe Dodge has installed on the `05 Dakota's. If you get a second on my website at http://www.onlineautorama.com/forum/showthread.php?t=525 check the 4th post and look at the pictures i have of the Y-Pipe and check out how smashed the 2 pipes are.
Both of my Cat converters are attached to this Y-Pipe and there isnt an after market performance Y-Pipe out for my truck that won't throw sensor code errors, or at least none i know of anyway so this is why i was interested in True Duals.
My Y-Pipe has got to be way restrictive!!!
Let me know what your thoughts are.
Thanks again.
Jim.
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intense blue
Dodge Dakota
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9/11/2005
20:57:53
| RE: My DYNO Run Yesterday: Video / Pictures.
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dewey, no engine needs backpressure to perform. What and engine does need is an exhaust system that is tuned to allow the exhaust pulses to pull eachother out. It's kind of like a siphon tube. Go with big pipe and it only siphons at high rpm equaling a loss in torque. Go with small pipe, and it siphons well at low rpm, but is restrictive at high rpm. This is the same concept that applies to headers (small and big tube). The size of exhaust pipe is mainly important with exhaust manifolds because they use the rest of the exhaust system to help them out. A good set of long tube headers will do most of the siphoning itself, so you might as well run them wide open for the best power.
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TexasTodd
Dodge Dakota
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9/12/2005
15:24:28
| RE: My DYNO Run Yesterday: Video / Pictures.
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Online,
31%? Is this an AWD, 4x4, or 2wd?
Most people figure about 25% of a 2wd auto.
I used 18% for my QC, 2 piece drive shaft, 5speed manual, 2wd to get at my crank #'s.
My dyno, non superchips, on 87octane, RW, was
219 rwhp, and288 rw ft/lbs of torque.
In 4th, 1:1, with a 3.55rear gear.
I do have HO cams and HO intake, and minor other free mods, and no third cat on a stock exhaust.
P.S. Have you ever seen an objective dyno, one that's not trying to sell the product, of your headers? Lots of talk that on the 4.7, they do very little.
For that matter, any independent dyno's that will verify K$N's numbers? Never seen it.
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RaZoR1
Dodge Dakota
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9/12/2005
17:56:41
| RE: My DYNO Run Yesterday: Video / Pictures.
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Hey Dewey, how are you getting that kind of power out of your 4.7???
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ha
Dodge Dakota
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9/13/2005
19:13:11
| RE: My DYNO Run Yesterday: Video / Pictures.
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I'm callin bull sh%t!!!
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LOL
Dodge Dakota
JOIN HERE
9/13/2005
21:31:42
| RE: My DYNO Run Yesterday: Video / Pictures.
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Dewey must have stuck a potato in his tail pipe to build up the backpressure. Silly boy
I thought someone debunked the backpressure myth a long time agoe. Like the tb spacer old myths die hard.
It doesn't make any difference whether you have od on or not if you are in first or second gear.
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Caulk04
GenIII
9/13/2005
21:44:55
| RE: My DYNO Run Yesterday: Video / Pictures.
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The 5-45RFE (03' and newer 4.7's) auto had two overdrive gears...third is 1:1.
The 45RFE (00-02 4.7's) is the same transmission minus the .67:1 second overdrive. 4th in both is .75:1.
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Satakieli
Dodge Dakota
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9/18/2005
17:07:05
| RE: My DYNO Run Yesterday: Video / Pictures.
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"But anyway, those numbers don't seem too far off. All a lower gear ratio would do is lower hp and increase torque."
Kind of tired of this misconception here... Gears SHOULD NOT typicaly reduce HP unless there is a problem. Gears are torque multipliers and there are three types of drives. Under, Direct, and Over. Torque is not acceleration its the turning force of an object. Ever notice how 1st tops out quicker than 2nd? 2nd than 3rd, etc? Simple physics explain... When a smaller gear turns a larger gear it multiplies the effort of work (torque) by the ratio but reduces speed.- Under Drive.. When A larger gear turns a smaller gear work (torque) is reduced but speed is increased. - Over Drive
One MORE thing HP is not top speed its the rate that Torque is generated
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TexasTodd
Dodge Dakota
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9/19/2005
17:35:53
| RE: My DYNO Run Yesterday: Video / Pictures.
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Well then, Yea, pretty much what SATA said!
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Satakieli
Dodge Dakota
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9/19/2005
19:37:16
| RE: My DYNO Run Yesterday: Video / Pictures.
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One more thing, if i have to explain direct drive to anybody... they should promptly stop trying to work on a car and/or kill themself
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Mikes99Dakota
GenIII
9/20/2005
10:37:35
| RE: My DYNO Run Yesterday: Video / Pictures.
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Nice Sound that your truck has. Next time they dyno you truck find out what MPH you cant punch it and it wont down shift to second. If you do this you can find out what power you make at the bottom end of your 4.7L rather than gunning in and letting it upshift. Decent numbers should be a hell of a loot better with superchips.
1999 RC Auto 5.2L
Mopar PPH, Magnaflow 3"/Cut-out, K&N FIPK, Viper Electric Fan Kit, 3.90s/Suregrip
Track Times: 60' - 2.163
1/8 - 9.53 @72.19 mph
1/4 -14.89 @91.24 mph
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