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Matt01RT
Dodge Dakota
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2/25/2003
12:43:41

Subject: Too open...or Just Right
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I have ordered and will recieve my header kit from krc performance in 3 days. I have a 2001 R/T. As a few of you already know on our trucks like that we have 3 converters...well with this kit...you elmininate the first 2. My qustion is this. I also have the Gibson cat back single exhaust...just waiting for the headers to install. I was going to gut the 3 cat. Is this wise or should i leave it alone. I know too open of a system will slow you down. Like i said...i have the 3 inch single. Would it be smart the gut the third while i am at it?



moparjoe20
Dodge Dakota
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2/25/2003
12:54:50

RE: Too open...or Just Right
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Gut the 3rd cat or if they don't test in you're area just take it out .

I run headers and a 3" single exhaust with a Flowmaster and no cat on my Dakota and picked up power from idle to the rev limiter - I picked up 3 mph in the 1/8 over the stock manifolds , 2 1/2" single , no cat and Dynomax Ultra Flo.



Demon Dakota
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2/25/2003
14:43:23

RE: Too open...or Just Right
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Gutting the third cat or just removing it entirely doesn't mean you'll lose power. If you're truck is set up right, you'll gain power. Static backpressure isn't everything...

K&N Drop in AF (CAI during summer months)
True Dual exhaust and removed third cat
HO Cams & HO Intake
FASTMAN 70mm TB
Autolite 3923 Plugs
TPS @ .76 VDC
IAT Adjuster Mod
14.52@94.2 MPH at Silver Dollar Raceway

Joey
Dodge Dakota
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2/25/2003
15:32:39

RE: Too open...or Just Right
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when u remove the precats and use a simm box, does this take care of the o2 sensors before and after the precats or just after?



Matt01RT
Dodge Dakota
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2/25/2003
16:25:23

RE: Too open...or Just Right
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The sim boxes take care of the rear 02 sensors only. You need the front 2 in to adjust your fuel and stuff like that...i think. I know for a fact that you do need to keep the front ones in though. With the kit that I bought from KRC Performance, they do slight modifactions to your headers that you buy. The make you a new y pipe with the pre cats removed and a spot to place your front o2 sensors in.
By the way the mods I have done so far are...
K&N cold air induction
M1 intake manifold
Hypertech Power Programmer III
Gibson 3 inch single catback
These Mopar Performance Headers
180 Thermostat
Accell Extreme 9000 plug wires
Accell cap and rotor
Autolite 3923's
Sythetic Rear End fluid
I run Castrol Syntec oil with a K&N oil filter
And in 2 months i will have a new throttle body and Roller Rockers. If anyone can sugjust a good throttle body I would appricate it. I was thinking eather Fastman or F&B?



Joey
Dodge Dakota
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2/25/2003
16:39:37

RE: Too open...or Just Right
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thanks for the info, by the way, i keep hearing that F&B makes the better throttle body but it cost almost twice as much for maybe 3 or 4 more hp so its up to u. ill probably end up going wit the F&B just because.



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