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Mike M
Dodge Dakota
8/04/2001
22:09:38
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 Subject: 2001 4.7 headers
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Has anyone installed a set of headers on the 2001 4.7 with the tri-cats?? If so what happens with the 2 cats and sensors which are so close to the manifold??
THX for any help.
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fot80
Dodge Dakota
8/05/2001
12:23:55
|  RE: 2001 4.7 headers
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I have. I haven't noticed any problems yet, no lights or anything. Don't think the cat-forward headers affected the 3 cats much.
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Dr.Q
Dodge Dakota
8/23/2001
19:01:08
| RE: 2001 4.7 headers
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Can the '01 4.7 still pass emissions with out the two pre-cats? Dodge put them on there only for Calfornia and to become a Low Emissions Vehicle (LEV) and satisfy the gov. that Dodge was doing something for the envronment. If you can rip out those cats (withou being sent to emissions hell), now that would open the potential for some serious exhaust mods.
Your pal,
Dr. Q
'01 RC SLT 4.7 5-sp 3.92LSD-the quickest Dodge makes!
P.S. Just a thought-a 3800 lbs. V-8 truck that does O-60 under 7 seconds and is rated as a LEV! A guy doesn't even have the option of sucking the tail pipe-no carbon monoxide!
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Jeffster
Dodge Dakota
8/23/2001
21:11:38
|  RE: 2001 4.7 headers
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Removing those cat's would be a biatch. There is an emissions sensor before and after both cats. They are apparently high flowing anyways. I plan on leaving my pre cats and continuing my 3" exaust right to the Y pipe eliminating the main cat. The main cat has no sensor before or after it on mine.I will replace it for emissions testing every 2 years. 3" right from the Y will be a great exaust system. I also want to leave at least some sort of cat on there just so I don't feel like I am killing the planet.
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Dr.Q
Dodge Dakota
8/23/2001
22:49:38
| RE: 2001 4.7 headers
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Message:
Let me make sure I got this. It would be too much of a hassle to remove the precats. But, You can't get headers on with the pre cats on. And, you probobly couldn't pass an emissions test without the main cat. Do I want to spend $300+ on a high flow cat-NOPE. Which brings us back to the cat back systems-sheesh. And honestly, I'm not really sure that they are worth the $$$$. Which brings me back to my lowly '01 SLT RC 4.7 5-sp 3.92 LSD. What's a guy to do?
Your pal,
Dr.Q
P.S. I don't have a track with in 300 miles of me. Any I know you have the same set up. So let me know how your truck does before you mod the bajeezus out of it. Matt says with a little practice you should be able to pull 14.8 all day long. Good luck with the shiftin'
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Dr.Q
Dodge Dakota
8/23/2001
23:00:56
| RE: 2001 4.7 headers
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I think I spoke too soon. I just surfed the JBA page, any body got any info on these shorty pre-cat headers, but ooowee $432.00! Any info on their performance will be greatfully appreciated.
Your pal,
Dr.Q
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doch80
Dodge Dakota
8/24/2001
00:34:34
| RE: 2001 4.7 headers
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I have a 5.2L 99' and put Jba headers on about three or four weeks ago while the promotional sale was going on. I payed three something for them. Awesome! Gained a huge amount of torque from them. I would pay $400 for them any day!
Doch80
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Jeffster
Dodge Dakota
8/24/2001
02:04:13
| RE: 2001 4.7 headers
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Dr Q I am heading back to the track tommorow if the weather is good. I figure I should be able to gain almost a second. I was shifting ouside of the power band as well as slipping and grinding. BTW It's said that headers are showing virtually no gain whatsoever for the 4.7. the stock manifolds apparently breath very well.
the problem isn't moving the pre cats either Q. the problem is all the sensors that are position before and after the cat's. Having the wires reading the same will confuse the computer for it will tell it that the cat's aren't working for the emission before and after will read the same. If you haven't done so allready cold air intake is the most efective mod for the cost.
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Muzzy
Dodge Dakota
8/24/2001
02:24:26
| RE: 2001 4.7 headers
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I am running the Borla stainless headers on my 2001 4.7L. I don't think they added much more that about 9HP in performance. I also have a Flowmaster Force II cat-back 3" system. That did improve my performance and I gained about 1mpg on the highway.
All 2001 and up vehicles have to conform to California emissions. I bought my truck 15 miles from where it was built at the Mound Rd assembly plant near Detroit and it has 3 cats. All 2001's also have vapor canisters on your fuels tanks. Thats why you can't pump that extra $.50 worth of gas in without it going all over the side of your truck or remove the fuel cap while the truck is running without tripping a MIL.
You can remove the pre-cats, but you have to replace the rear 2 O2 sensors with "KatBox" devices from www.krcperformance.com. It tricks the PCM into thinking the pre-cats are functioning normally.
I think there are better mods than the headers since the factory manifolds are a pretty good design. I would recommend a cat-back system though.
-Muzzy
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Jeffster
Dodge Dakota
8/24/2001
20:02:51
| RE: 2001 4.7 headers
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I bet a dyno will show mabye 2-3 HP for your headers. There was a guy on this board or another and that's all it showed for a gain. Apparently even a cat back doesn't add much more than 5 HP. The cold air inatke will proabably give you 9 HP however. It's not like the old days where a few mod's got you going real fast. Cost big coin on these engines and that is why so many people drive dime a dozen 5.0 stangs. Only 2 Dakota's last time at the track and over 200 showed up along with about 50 stangs and 30 late model Camaro's.
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kota on 20s
Dodge Dakota
8/25/2001
02:59:14
| RE: 2001 4.7 headers
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jeffster, maby you seen all thoes stangs and camaro's but not many daks because most people use there daks as trucks. thoes who run the stangs are because they are sports cars and are sopose to be at the track. I guess we are some crazy people for hopping up a truck. =) JK.
ERic
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Jeffster
Dodge Dakota
8/25/2001
21:13:03
| RE: 2001 4.7 headers
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Crazy Eric? Hell no!! Uniquie, hell yes. People get excited seeing Dakota's running as fast as some of the Stangs. When they see a Stang run 13's or 14's nobody even cares. If a Dakota runs 14's jaws often drop out of there mouths. Imagine the respect and attention when you throw on a SC and run mid 13's. Everyone appreciates that way more for they realize the money spent to do that is quite alot compared to your millions of Mustangs at the track. Besides we sure look a hell of a lot nicer than them to start with.
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juniork
Dodge Dakota
JOIN HERE
2/18/2002
00:24:09
| RE: 2001 4.7 headers
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You can easily remove the cats by the manifold by buying a Y-pipe for the 2000 dakota with a 4.7L. Chrysler put on three cats in 2001, then to make up for the power loss they put on a 68mm throttle body instesd of the 65mm TB that is on the 2000 4.7.
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Todd Bouton
Dodge Dakota
JOIN HERE
2/18/2002
08:11:52
| RE: 2001 4.7 headers
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A friend with a chevy Impala, 01, very fast, lots of mods, removed his cat by getting a factory pipe that bolts where the cat went, that comes on his car sold in country's that don't require a cat. From GM!
Isn't there someone that can get a part number for the same on my '01 4.7 QC?
All this talk about cats, I'M A CATAMARAN SAILBOAT RACER!!
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Joe C.
Dodge Dakota
JOIN HERE
2/28/2002
00:19:09
| RE: 2001 4.7 headers
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Are these headers loud?
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4.7dak
Dodge Dakota
JOIN HERE
2/28/2002
00:47:23
| RE: 2001 4.7 headers
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are the stock headers hard to remove??
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TEAMFAST
Dodge Dakota
JOIN HERE
4/20/2002
15:25:33
| RE: 2001 4.7 headers
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will these shorty headers bolt right up to factory
first pipes? My exhaust is great the way it is and
i dont want to lose cats in the proces
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Cody Thomas
Dodge Dakota
JOIN HERE
9/09/2003
22:29:20
|  99 camaro v6 headers
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I recently ordered headers for my 99 camaro. It has a v6. In ordering, i didnt even worry about who would put them on or whatever, but now they are in and im stumped. Anyone who knows how to install them the easiest way, let me know. THANKS
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R/T in OKC
Dodge Dakota
JOIN HERE
9/12/2003
09:25:34
| RE: 2001 4.7 headers
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i had an '02 4.7 and i put the JBA firecone headers on. the only problems i ran into was when installing the headers the precats got in the way of the headers lining up right. so i had to cut the precats off, install the headers, and then drive to the mufflers shop with open headers (FUN) to get my precats welded back into place. as far as performance goes, i deleted the third cat at the same time and i noticed a longer shift pattern up in the higher rpms and seems to have a bit more torque as well.
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