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lil red dak
Dodge Dakota
6/17/2001
10:59:14
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 Subject: PCM upgrade
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Message:
Any of you magnum v-6 owners try upgrading your stock PCM to the High Performance Magnum Engine Controller that the Mopar high Performance catalog lists? I noticed it is only recomended for V-8 engines and am wondering if it would work on a V-6. The catalog claims increases in HP and Torque without hurting drivability. there is no lising for 4 cylinder engines.
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sandman
Dodge Dakota
6/17/2001
14:52:34
| RE: PCM upgrade
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Message:
If you are serious about performance then consider an after market stand alone programable ECM. I am partial to ElectroMotive/Motec. They have systems that will work on rotary engines and on I4-V12's.
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Art
Dodge Dakota
6/17/2001
16:16:57
| RE: PCM upgrade
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Message:
sandman how do you do that in a everyday driver huh?Those stand alone systems are not meant really for daily drivers with all the comforts that we have Motec sytems are very complicated for most people including me,by the way I think Haltech makes a better system we want a simple plug an go chip that really does some improvements,think you can make it work on your stock dak,I hope you can and would love to see it,mopar dont even make one for mine 4.7 4x4 5 speed and jet chips I`ve used before and was disappointed,hypertech maybe or you sandman make it happen
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Bernd
Gen III
6/17/2001
17:01:57
| RE: PCM upgrade
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Message:
Superchips ICON, and a few other controllers work well...but are not a complete replacement for the PCM.
I'm waiting on a response regarding the SpeedPro computer to see if it also works on a V6. ($1500+ computer though...but worth every penny.)
1997 Dodge Dakota SLT - V6
Supercharged @ 10#
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sandman
Dodge Dakota
6/17/2001
22:48:43
| RE: PCM upgrade
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Message:
Well I have built over a dozen rides with stand alone after market sytems and they are easy to work with now. Most include beta fuel maps to get you started and up and running in a hurry and they will work just fine for daily drivers. They are not cheap but if you can read, follow directions, spin a rachet, crimp and solder wires they are not that hard to use. I am asumeing that if some one is asking about modifing their ride they have a basic understanding of how a modern electronicly fuelinjected vechile works. You are not going to get an emission legal plug and play setup from the factory that is going to do anything other than lighten your wallet. Ask BERND if any of his toys were factory plug and play or if he had to deveolp and modify componets to get where his ride is at. P.S. Your 4.7 is flash programble. The factory eprom can be reprogramed without swaping out anything other then 1's and 0's through your data port.
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Art
Dodge Dakota
6/17/2001
22:59:32
| RE: PCM upgrade
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Message:
Yes sandman I know you can flash it so why hasnt some genius like you made the optimum flash for a stock 4.7,Id like to see you do it if you can come on write those 1`s an 0`s and its gonna take alot of dyno time sandman guess you have one in your garage
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sandman
Dodge Dakota
6/18/2001
18:18:13
| RE: PCM upgrade
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Message:
1)It takes time and money to decompile code and then reverse engineir a system. 2)I do not have the equipment to do it. 3)I do not need to do it. 4)I do not hot rod my daily driver. 5)Who want that type of liability? 6) Their was a post a few weeks ago about a company that will cutom flash your ECM for $550.00
P.S. It takes quite abit of track time and dyno time to properly map an engine. You must aslo develop the right cam profile to match you programing. If you are going to do that you might as well sell a package. Like reworked heads, throttle body, cams shafts and adjustably cam sprockets, superchargers or nitrous to go with your super hot programing. You could even do it in stages. Their is not going to be too much to be gained with reprogramming if all the rest is stock. You might gain a little top end by raiseing the rev limiter and speed limiters and you could probably go a little richer on the air/fuel ratio but not much. If you do not want opinions that differ from yours do not ask for advice. I just hate to see people throw their money away on a mod that will not buy much bang for the buck.
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lil red dak
Dodge Dakota
6/18/2001
20:51:12
| RE: PCM upgrade
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Message:
oh yea this is a daily driver and a hiway cruiser.
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Art
Dodge Dakota
6/19/2001
02:55:09
| RE: PCM upgrade
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Message:
Sandman your a flip floper,your earlier post said custom pcm would work fine and its real easy now whole diff story you have also said that most upgrades arent worth the money the 2 mods ive done I would highly recomend the mbrp dual rear cat and the z-tube with pro-flow filter,better in better out and im gettin better milage, think im gonna try bernds IAT im thinkin that would do as much as a jet chip,your okay sandman bit of a floper but I like your veiws
p.s see my last post I know what a dyno is :)
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sandman
Dodge Dakota
6/19/2001
18:07:40
| RE: PCM upgrade
IP: Logged
Message:
I did not "FLIP FLOP" In reponce to his question I told him that after market ECM's are the way to go if serious performance was the quest. After market ECM's are the easist to work with. You can use any laptop computer that is IBM compatiable and they tend to have processors that are much faster then stock CPU's.They will work just fine. The point I was trying to make is that just flashing the stock ECM or replaceing the stock ECM with an after market ECM will not do any good if the rest of the engine is still stock.The reverse is also true, You can add headers, a free breathing exhaust, and a free breathing air filter setup and it is not going to do much good if you are running stock cams, compression ratio, heads and ECM. Everything has to work together!
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lil red dak
Dodge Dakota
6/19/2001
22:09:58
| RE: PCM upgrade
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Message:
Soooo I take it none of you hav put a V-8 Hi -PER ECM from Mopar on a V-6. OK fine. The factory Hi Per ECM is $256 and a little bit expensive to do an experiment with. This dak is daily driver and I am NO WAY interested in internal engine mods. The ECM in question is recommended for air cleaners, exhaust and camshaft changes, BUT the D/C hi per mopar catalog does not list a cam that fits '93 and newer Magnum engines. Since the internal valve train oiling in Magnums had major changes in them in '93 that leaves out a cam change as 3 months of searching on the net and D/C, Jeg's, Summit etc. show that no cams are available that will upgrade performance. I already have a cold air/ram air home brew that added 4-5 mph in the 1/4 plus dropped time by about .5 sec. average. I put a pressure gage in the system just to check it and at 70 mph and WOT I show 4 lbs. manifold boost. '97 CC 3.9 tunnow 255-70-15's/w BFG Radial T/A's 3.55 17 mpg city almost 21 hiway. Check out page 49 in the current Mopar Hiper catalog to see what I mean about the ECM. I am not interested in a add-in chip either. Aftermarket does not interest me either as I want to drive this year-round with temperatures from -10 to 100+ and have found aftermarket to be too temp sensitive. I have a 3.9 not a 4.7 and yes I am aware of flashing the e-prom. My parents had a New Yorker w/factory turdocharger the dealer in Glenwood springs Colo. flashed when they moved from the midwest to Colo. a few years ago. They ended up selling it as the car never ran right after that,they felt that 9 trips to the dealer to get it re-flashed at $200 a pop was way too money. Funny thing was it ran fine for over 2 years till the dealer talked them into flashing, then it never ran right after that. The dealer told them it would run better at high altitude, YEAAAA RRIIIIIGHT. just call me no flash.
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Art
Dodge Dakota
6/20/2001
02:14:14
| RE: PCM upgrade
IP: Logged
Message:
I agree in most part sandman but a cat-back and filter setup im runnin has made a good bang for the buck difference,t/q a little and over 2500 rpm way more responsive and better millage to boot picked up a .9 in the city I think thats well worth the money an the factory ECM does learn within reason,granted im using my ass dyno but its better all way round
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lil red dak
Dodge Dakota
6/24/2001
11:24:13
| RE: PCM upgrade
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Message:
I already have a gibson cat back dual exhaust and a home brew ram cold air intake directly into the airbox. I used a pc. of solid, non-corregated 4 inch dia dryer vent. I removed the orginal air horn. Then I cut the end of the dryer vent at an angle that allowes me to line up the vent tube to the opening between the radiator and the truck body. I then removed the rubber rain gard from the truck and cut the other end of the vent so it would fit fairly well in the opening I just created. I used aluminum flashing and pop rivets and 200mph tape to finish it off. At 70 mph and WOT and a 15 mph head wind , with a turbo pressure sensor set up piggy-back on on another sensor in the manifold I show around 4lbs. manifold pressure. A cheap and easy super charger, don't you think? The mod cost me nothing as everything was made from scrap from other things around the house. I show 1 mpg increase city to 17.5 and 21.5 on the hiway. And as an added treat I took it out to a place where I have tested my vehicles over the past 31 years and I had gained 4-5 mph in the q/mile over the dual cat back system. ran it twice to confirm changes. The thing takes off normally until around 3000 rpm in second, then it feels just like a turbo charger builds up boost and takes off. I owned a '79 2.3L Mustang Cobra Turbo for 9 years so I remember that feeling quite well. Also I did not notice much of an immediate change until the PCM had time to reprogram itself. Like Bernd said in another post, air in air out.I am also running 255/70R15 BFG Radial T/A's 3.55 gears 3.9 automatic 4 speed, tonno
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Jacob
Dodge Dakota
6/24/2001
19:23:54
| RE: PCM upgrade
IP: Logged
Message:
So nobody really knows about a good 3.9L PCM?
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lil red dak
Dodge Dakota
6/30/2001
10:59:11
| RE: PCM upgrade
IP: Logged
Message:
I guess so One other thing I am noticing tho that seems to hurt performance a bit, when in drive and taking off under full throttle the tranny is now shifting at 3800-4000 rpm rather then running up to or slightly over the 4500 redline, like it used to. 'course thats why we with the auto can manually shift, right????
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Jacob
Dodge Dakota
6/30/2001
11:55:25
| RE: PCM upgrade
IP: Logged
Message:
I don't hsve that problem with my auto though it does shift in the lower to mid 4000s instead closer to the rev limiter.
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lil red dak
Dodge Dakota
6/30/2001
21:00:53
| RE: PCM upgrade
IP: Logged
Message:
I don't know what the rev limiter is set to but a ran that puppy up to 5300 locked in first last night
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Mr. Crude
Dodge Dakota
JOIN HERE
7/17/2004
13:30:02
| RE: PCM upgrade
IP: Logged
Message:
dude the best thing you could do for that 3.9 is stuff a SC on it.
otherwise forget about cheap and easy mods to the 3,9 as there
are none to be had. If you want a race truck why didnt you buy a
race truck?
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Germ
Dodge Dakota
JOIN HERE
7/17/2004
15:55:18
| RE: PCM upgrade
IP: Logged
Message:
I have a question for you Mr. Crude, why would you reply to a post from 3 years ago? Chances are that lil red dak has gotten done what he needs to on his truck by now.
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