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big_torque
Dodge Dakota
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5/31/2002
18:33:08
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 Subject: Dyno run on a 99 R/T
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99 R/T mods :
Headers ( jet hot)
Hi flow cat
Gibson single 3"
180 stat
Quick D 51.75 mm Throttle body
Mopar K&N intake w/ heat shield
rubber flap cut away for more air to filter
Accell brass cap & rotor
Taylor 8mm wires
autolite 3923 @ .040
Mopar PCM
total cost - approx $3000 ( nolabor)
217.3 HP @ 4250 ( rear wheel )
305.8 TRQ @ 3100 ( rear wheel )
air/fuel ratio 12.8 @ 3000
12 @ 3500
11.5 @ 4000
11 @ 4500
10.8 @ 4800
I knew that sucker was running rich. I could smell it at the dyno. I think the PCM causing me to run rich & lose power. Not to worry , I have heads ,M1 , cam , 1.6 RRs and more on the way !
So I got about 27 HP over stock for $3K
Thats 111 bux / 1 HP ! yikes !
You all should have a dyno. You`ll be surprised.
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kota on 20s
GenIII
 
5/31/2002
18:48:53
|  RE: Dyno run on a 99 R/T
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your o2 sensor might be bad causing it to run rich. how many miles are on it? also, if its running rich, the cat might be bad which could result in a HUGE loss of hp and torque.
Eric, 98 5.2 5speed, K&N gen II, 50mm TB, 2bbl M-1, 1.7RR's, JBA ciramic headers, carsound cat, dumped gibson, and a lot more
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big_torque
Dodge Dakota
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5/31/2002
21:56:27
| RE: Dyno run on a 99 R/T
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I have 11,130 miles. I just had a Catco hi-flow cat put on too. hmmmmmm , you think bad O2 sensor , huh ? Why else could it be running so rich ?
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rtxpres
Dodge Dakota
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5/31/2002
22:35:53
| RE: Dyno run on a 99 R/T
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Mopar Performance PCMs, and other modified ones, are designed to go extra rich at WOT. Depends on your mods whether that is too rich or not. The PCM does not read the O2 sensor at WOT so that would have nothing to do with it. Hope this helps.
Ray
http://www.dragtruk.com/ENTRIES/20KM1FD2KWBP.html
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kota on 20s
GenIII
6/01/2002
01:03:20
| RE: Dyno run on a 99 R/T
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thats true about the WOT and the o2. forgot 'bout that. with 11,130 miles the o2 should be fine.
AND ITS A 99!?? you need to drive that thing!
Eric, 98 5.2 5speed, K&N gen II, 50mm TB, 2bbl M-1, 1.7RR's, JBA ciramic headers, carsound cat, dumped gibson, and a lot more
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big_torque
Dodge Dakota
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6/01/2002
13:27:38
| RE: Dyno run on a 99 R/T
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yea its a 99 w/ 11K mi. I store it in winter and only take `er out on nice days. Trying to keep the miles down. I drive a POS to work.
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kota on 20s
GenIII
6/01/2002
15:11:07
| RE: Dyno run on a 99 R/T
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geez, i need a pos to drive! my 98 has almost 80k!!
Eric, 98 5.2 5speed, K&N gen II, 50mm TB, 2bbl M-1, 1.7RR's, JBA ciramic headers, carsound cat, dumped gibson, and a lot more
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ChuckF
Dodge Dakota
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6/02/2002
20:13:10
| RE: Dyno run on a 99 R/T
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Just Dynoed my 1999 R/T.
214.9 Power
303 Lbs Torque
Mods: K & N Air System
Mopar Performance PCM
Many more mods to do, but not bad for a 600.00 out of pocket cost!
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big_torque
Dodge Dakota
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6/02/2002
23:48:39
| RE: Dyno run on a 99 R/T
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600 bux and you have about the same power as me ? I hate you . LOL
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Fluid
Dodge Dakota
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6/03/2002
03:18:39
|  RE: Dyno run on a 99 R/T
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Don't hate anyone yet. It is common for dynos to differ, particularly if they are different types. The DynoJet is reportedly ( by shops whose business is high performance ) the better one to use, as the operator makes less difference in the results. To compare a brake dyno run to a DynoJet run is too much like comparing apples and oranges - they could easily be off by 10% or more - or not, you just do not know. Too, where the HP figures corrected, or raw?
But then peak hp is not the whole story either. Those who rely on peak hp only are missing the big picture - the engine with a lower peak hp can run away and hide from the engine with higher peak numbers - if the former has more area under the hp curve. A single data point is almost useless....
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joel
Dodge Dakota
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6/03/2002
14:57:08
| RE: Dyno run on a 99 R/T
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Do you have a scan of the dyno graph?
Joel
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4wDakota
GenIII
6/03/2002
15:13:53
| RE: Dyno run on a 99 R/T
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Looks to me like you spent way too much on exhaust and not enough on intake. That TB is pretty big for your application. I bet if you do intake work (M1 2BBL and 1.7 Roller rockers) you'd see a huge jump in performance.
Corey
98 CC 4x4, 5.2 Auto 3.55LSD
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big_torque
Dodge Dakota
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6/03/2002
16:19:02
| RE: Dyno run on a 99 R/T
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Yep , 4wDak , I was thinking the same thing. I opened up the exhaust real nice and not enough on the intake side.
Joel , I do have a print out of the dyno. I`ll send it to ya but I need a email addy or tell me how to post it here.
Fluid , I see what you mean about area under the curve and relying on a single data point. The HP & torque curves were pretty flat on my run up til about 4400 rpm. then they dropped like a rock. He went WOT at about 2800 rpm and let off at 5000 according to the graph.
It was my first dyno and I didnt want to get my expectations up too high. I guessed 220-225 peak HP. I wasnt far off !
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kota on 20s
GenIII
6/03/2002
17:03:40
| RE: Dyno run on a 99 R/T
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nothing that a 150 shot of goofy gas cant fix..hehehe
Eric, 98 5.2 5speed, K&N gen II, 50mm TB, 2bbl M-1, 1.7RR's, JBA ciramic headers, carsound cat, dumped gibson, and a lot more
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rtdkota
Dodge Dakota
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6/03/2002
17:14:59
| RE: Dyno run on a 99 R/T
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Bone stock my '00 RT did 204 hp & 268 ft lbs.
1.7s will give you 12-15 hp and 20-25 ft lbs. of torque... M1-4bbl will drop 20-26 ft lbs., but gain 15-20 hp (but the curve is a lot wider for both torque and HP, higher up into the rpm range).
Currently my last run netted me 256 hp & 318 torque... Going to the Dyno today to get the updated #s with Cam, and heads... Hope to see 270 or so.. (fingers and toes crossed!)
Sam
www.socaldakota.com
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Demon-Xanth
Dodge Dakota
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6/03/2002
17:16:37
| RE: Dyno run on a 99 R/T
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kota on 20s: Don't feel bad, my '02 just passed 12k (time for it's third oil change)
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kota on 20s
GenIII
6/03/2002
17:25:53
| RE: Dyno run on a 99 R/T
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thanks demon.
sam, how do you like the cam and heads? how is the idle with the cam and 1.7's?
Eric, 98 5.2 5speed, K&N gen II, 50mm TB, 2bbl M-1, 1.7RR's, JBA ciramic headers, carsound cat, dumped gibson, and a lot more
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HSKR
Dodge Dakota
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6/03/2002
17:30:38
| RE: Dyno run on a 99 R/T
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My last dyno run on my '99 R/T got me 251hp and 304 ft/lbs to the wheels. Mods are
Mopar PCM
Mopar 2bbl M1
Mopar chrome headers
Fastman 51.75mm TB
QuickD CAI(uses stock air hat)
gutted cat
3" exhaust through a Spintech 5444 muffler
ASP under drive pulleys
Jacobs ignition
TPS mod
Since then my Jacobs ignition has died on me, and I have installed a set of 2.02 ported and polished R/T heads and Comp Cams cam. Alos have removed my factory clutch fan and have a Perma Cool Electric fan. The 2bbl M1 by itself gave me about 20 hp gain. I will be going to the dyno within next couple months and hope for a 300RWHP run.
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dakota matt
GenIII
6/03/2002
17:58:16
| RE: Dyno run on a 99 R/T
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have 97 5.2L with current mods including Crower 1.7 RR's, MSD ignition, Autolite 3923 sparkplugs, 180 degree t-stat, under drive pulleys, K&N FIPK and very soon I will have a Gibson single cat-back exhaust and high flow cat. The cat is here and the cat back is in the mail. Buy the end of the summer I will have an M-1 intake, F&B 50mm throttle body, electric fan and Mopar PCM. I am hoping to find a place here in Italy to get a dyno on it. I am hoping to be around 240 RWHP. Do you think I will be up that high? I am not sure I will find a place here for a dyno.
Matthew Lee
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Duner
Dodge Dakota
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6/03/2002
18:59:54
| Dyno run on a '00 4.7
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Results from an earlier set of dyno pulls without the turbo on my '00 4.7
Custom programmed PCM
Ported 68mm TB
K&N filter thru stock airhat
3" Cat with full 3" exhaust with 70 series Flowmaster muffler
Fuel rail cooling system
242.2 rwhp, 322.5 rwtq
http://members.cox.net/duner/Turbo/Duner47DynoWcooler.JPG
And who said the 4.7s don't make any torque?
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ChuckF
R/T
6/03/2002
19:23:00
| RE: Dyno run on a 99 R/T
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I am currenntly having Mopar Headers and A Tru Dual 2.5" Exhaust with 2.5" Fill Flow Cats. I am planning to dyno after. I will post results. I am planning to lose some low end torque. The results will be a graph comparing the bone stock baseline to the uptodate mods.
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4.7RC
Dodge Dakota
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6/03/2002
20:03:40
| RE: Dyno run on a 99 R/T
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DUNER is a man's man!
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rtdkota
Dodge Dakota
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6/03/2002
20:49:02
|  RE: Dyno run on a 99 R/T
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Idle is good...nice short lope... Just got back from the dyno...!!!!!!!!!!!!!!!!!!!!!
2 8 3 hp @ 5400 rpm
3 2 5 ft lbs. @ 3800 rpm
Woohoo!!!!!!!!!
winner
winner
Toot <-- own horn
Sam
www.socaldakota.com
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Duner
Dodge Dakota
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6/03/2002
23:27:06
| Awesome Pull Sam!
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So tell us - was it the new custom cam? or did they just give you a good number for your good looks?
hahaha......... It musta been the cam!
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rtdkota
Dodge Dakota
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6/04/2002
09:56:12
| RE: Dyno run on a 99 R/T
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I think it was extra $20.00 I slipped the guy running the dyno... :P
Sam
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Montag
Dodge Dakota
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6/04/2002
10:25:23
| RE: Dyno run on a 99 R/T
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Damn, I'm going back to the V6 board, you guys are depressing me here. :)
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HSKR
Dodge Dakota
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6/04/2002
11:21:34
|  RE: Dyno run on a 99 R/T
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That's only because I havn't re-dynoed mine yet Sam!!
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rtdkota
Dodge Dakota
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6/04/2002
11:39:12
| RE: Dyno run on a 99 R/T
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I'll bet ya $20.00 you'd do better with a F&B 52mm on the dyno... Your setup will benefit from the additional flow-- I may even try a 55x52 at Tucson this weekend to see any differences... Your AF ratio should be checked when you run-- that'll let you know if you have any MORE to give HP/torque wise.
Sam
www.socaldakota.com
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HSKR
Dodge Dakota
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6/04/2002
11:54:34
| RE: Dyno run on a 99 R/T
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How bout letting me use your 52 while you try the 52x55. I've been wanting to try the F&B for a while, but can't see spending the money on it since the Fastman is doin it's job.(251hp before heads/cam)
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rtdkota
Dodge Dakota
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6/04/2002
12:29:44
| RE: Dyno run on a 99 R/T
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I need to run the 52mm to get to Tucson!
I might be able to find a loaner 52mm (used, little older design... same flow characteristics as the newer model).
Sam
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bassboy170
Dodge Dakota
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7/24/2002
14:47:17
| RE: Dyno run on a 99 R/T
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hey everybody just got my 1997 dak 5.2 cc 4x4 dynoed
329.1 hp @ 5300RPM
372.1 ft-lbs @ 4100RPM
not bad for a 4x4 5.2 huh?
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