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Clevite 77
Dodge Dakota
12/06/2001
20:12:02
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 Subject: Hey Bernd
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Message:
I did a search on sims, (the things the camaro guys are using to trick their 2nd o2 sensor, by thinking there is a cat) anyways, someone posted you have something like this, is it true here's the post. Or is there a way to trash the cat without tripping the check light.
Thanks
http://www.dodgedakota.net/boards/per/1409.html
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CW
GenIII
 
12/06/2001
20:49:38
|  RE: Hey Bernd
IP: Logged
Message:
Its called a Kat box take a look at his site
www.speedtweaks.net
Lots of good stuff.
2001 4.7 5sp 3.92 LSD sport plus
Ported throttle body, IAT adjuster, flowmaster cat back, adjusted TPS from .51v to .76v
Working on custom 4" cold air intake
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Clevite 77
Dodge Dakota
12/07/2001
11:34:21
| RE: Hey Bernd
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Message:
Thanks CW, so who has tried a kat box on a gen 3 hopefully my truck will be delivered by next week, and would like to take out the cat (the main cat) they don't inspect them in MI,
I guess it would also be nice to know where to mount the box
Thanks
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bernd
*GenIII*
12/07/2001
12:23:53
| RE: Hey Bernd
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Message:
The mounting location is on the frame (picture on website).
The KatBox works on the Gen-III trucks without any problems. '01+ models do require cutting and splicing as Dodge changed the O2 connectors in mid-2000.
I'm also workign with Caspers Electronics on the O2 SIMM for the Dodge's (different type of O2 onthe Dodge systems)...we'll have a second "ProtoType" in a few more days. (The initial one worked fine but didn't like the voltage range.)
1997 Dodge Dakota SLT - V6
Supercharged/Intercooled @ 10# w/Nitrous
14.93 @ 93.26mph
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Clevite 77
Dodge Dakota
12/07/2001
13:01:01
| RE: Hey Bernd
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Message:
Hey thanks Bernd, you'll have to keep us posted on when and how it turns out. I think it was you bernd, (not 100% sure though) that posted about removing the cat doesn't make any extra power until 3,000 rpms, is this the same with a 4.7L auto 4x4 w/ 3.92's, and is there a decent gain?
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kota on 20s
GenIII
12/07/2001
23:55:27
| RE: Hey Bernd
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Message:
Clevite77, be carefull. i have heard that putting just a cat-back exhaust on the 4.7 will hurt performance. by taking out the cat, it might be even worse. i dont have a 4.7, so i cant speek from experience, i am just going by what i have read from others and tring to be helpfull. goodluck
Eric
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bernd
*GenIII*
12/08/2001
01:24:12
| RE: Hey Bernd
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Message:
I'd definitely be careful on the 4.7L as it needs the bottom end TQ to get moving (as compared to the pushrod engines).
I'm also looking at something that Porsche has used for quite some time now: variable/tuned exhaust based on engine vacuum. Backpressure is regulated by a valve in the exhaust system...keeps TQ out of the hole with free-flow exhaust systems and opens/closes upon load demand. (Very easy to build but need to find out who makes that valve.)
1997 Dodge Dakota SLT - V6
Supercharged/Intercooled @ 10# w/Nitrous
14.93 @ 93.26mph
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2THEXTRM
GenIII
12/08/2001
09:08:58
| RE: Hey Bernd
IP: Logged
Message:
Now that's a exhaust valve I would be interested in. Let us know if you get more information!
Flowmaster stainless cat back, Air Raid CAD and homemade TB connect, Splitfire Plugs, 180 T-stat, .76 TPS, 3
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Clevite 77
Dodge Dakota
12/08/2001
20:09:49
| RE: Hey Bernd
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Message:
Thanks Eric and Bernd ya guys been a lot of help. (Not being sarcastic) and I have to agree with 2THEXTRM, Maybe I can take out the cat then
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sandman
Dodge Dakota
12/08/2001
21:28:19
| RE: Hey Bernd
IP: Logged
Message:
Lexus does this as well on some models. Their system is electronic. I think Honda has a model with this feature as well.
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KenDawg
Dodge Dakota
12/08/2001
22:57:41
| RE: Hey Bernd
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Message:
VTEC variable valve timing. It's crazy looked at one with the valve cover off. I didn't take time to understand it, but alot of gears on the cam shaft thats for sure. Anyways, on my 2000 CC 4X4 4.7 I didn't notice any low end loss when I installed my glasspak and dual tips. The thing runs like a rabid ape until I hit 3rd gear at about 4k RPM then it loses some torque. Going about 80-90 MPH. I'm sure a supercharger would fix all that. Someone loan me 4 grand!
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bernd
*GenIII*
12/09/2001
01:22:11
| RE: Hey Bernd
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Message:
Ken, VTEC is a totally different animal than what Porsche uses on their exhaust system. VTEC is on the valvetrain (as you explained)...this is not. (I'm not sure about other manufacturers...just found it on a new 911 exhaust system.)
1997 Dodge Dakota SLT - V6
Supercharged/Intercooled @ 10# w/Nitrous
14.93 @ 93.26mph
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surferpug
Dodge Dakota
12/09/2001
12:52:47
| RE: Hey Bernd
IP: Logged
Message:
hey bernd when your doing the TPS, what are you supposed to be dialing to adjust the voltage reading
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Clevite 77
Dodge Dakota
12/10/2001
13:48:31
| RE: Hey Bernd
IP: Logged
Message:
Hey Bernd take a look at the Nissan Altima, it has a variable exhaust, timing, and intake. a buddy here at work is thinking of getting one and he showed me a cd (brochure) that the dealer gave him I thought this might be helpful
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Brian024.7
Dodge Dakota
12/10/2001
15:00:42
| RE: Hey Bernd
IP: Logged
Message:
variable exahust timing is different than what Bernd is talking about. This is actually dealing with the cam and valvetrain, which is very complicated.
Bernd's idea is based on the 911 which used a valve in the exhaust piping, that basically would create backpressure and help low end torque, then open up and provide the high end hp, best of both worlds.
But two different things, not too many companies have used the exhaust valve, which pretty much everybody has variable valve timing...
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Clevite 77
Dodge Dakota
12/10/2001
16:17:50
| RE: Hey Bernd
IP: Logged
Message:
Sorry This is what I meant Variable Exhaust (in the exhaust) variable timing (in the OHC's and timing belt) and variable intake (in the intake of corse) does that clear it up a little, sorry about that I can see where it could have been misinterpreted that was my fault
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JJ
Dodge Dakota
12/10/2001
17:01:31
| Look what I found!!!
IP: Logged
Message:
Bernd
Take a look at this artical I dug up:
http://www.autospeed.com/A_0883/P_1/article.html
I WANT ONE!
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2THEXTRM
GenIII
12/10/2001
18:41:42
| RE: Hey Bernd
IP: Logged
Message:
Not this has anything to do with our Daks but, Ski Doo snowmobiles used a system called R.A.V.E. for over 10 years which I believe is an exhaust valve setup also. They stopped using it a couple years ago though.
Flowmaster stainless cat back, Air Raid CAD and homemade TB connect, Splitfire Plugs, 180 T-stat, .76 TPS, 3
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CW
GenIII
12/10/2001
19:56:40
| RE: Hey Bernd
IP: Logged
Message:
Two stroke engines have used that for years even my 1990 kawasaki had something symilar.
2001 4.7 5sp 3.92 LSD sport plus
Ported throttle body, IAT adjuster, flowmaster cat back, adjusted TPS from .51v to .76v, 4" cold air intake
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surferpug
Dodge Dakota
12/12/2001
18:30:19
| RE: Hey Bernd
IP: Logged
Message:
anyone that has done the TPS, what am I supposed to be turning to adjust the voltage
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CW
GenIII
12/12/2001
20:07:00
| RE: Hey Bernd
IP: Logged
Message:
You turn the TPS its self after you drill out the inserts.
2001 4.7 5sp 3.92 LSD sport plus
Ported throttle body, IAT adjuster, flowmaster cat back, adjusted TPS from .51v to .76v, 4" cold air intake
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