mopar pcm vs cat sim for dd no cats?

agdetail · Dec 17, 2011

tax return coming soon so i was thinking of upgrading my stock headers to a krooks or american racing no cats. currently have a borla exhaust.

does the mopar pcm have any problems with ac or if i ran 91octane 90% of the time?

or

is it better 2 get 4 cat sims to eliminate the engine lights? when i got the the viper on the lift i saw 2 o2 plugs on each side so im guessing it needs 4 sims?

mopar pcm go for $350-400 or 4 o2 sims for $300-400

will be mainly dd in the summer and tracking it for a week or 2.

Westxsrt10 · Dec 18, 2011

You need the 2 front o2 sensors for the engine to run .... replace the rears with anti- plug foulers for $10 at your local AutoZone. (or plug the exhaust bungs)

fqberful · Dec 18, 2011

Assuming your car is not a GenIV you need only 2 simms, the ones that would go behind the cats, one on each side. You NEED the front O2's to run the engine.

If your car is a GenIV the only choice you have at this time is the MOPAR PCM.

Non-foulers do not work 100% of the time, simms do. In the case o9f a GenIV only the PCM does .. nobody makes a simm for the NGC PCM.

FLATOUT · Dec 19, 2011

If I'm reading this correctly than you're saying for the gen 3 we need all 4 sims. Can you clarify?

Thanks,

Andy

fqberful said:
Assuming your car is not a GenIV you need only 2 simms, the ones that would go behind the cats, one on each side. You NEED the front O2's to run the engine.

If your car is a GenIV the only choice you have at this time is the MOPAR PCM.

Non-foulers do not work 100% of the time, simms do. In the case o9f a GenIV only the PCM does .. nobody makes a simm for the NGC PCM.

AbsolutHank · Dec 19, 2011

FLATOUT said:
If I'm reading this correctly than you're saying for the gen 3 we need all 4 sims. Can you clarify?

Thanks,

Andy

Nope, you only need the two rear simulators, and keep the stock O2 sensors in the front...Gen III only

FLATOUT · Dec 19, 2011

AbsolutHank said:
Nope, you only need the two rear simulators, and keep the stock O2 sensors in the front...Gen III only

Thanks Ryan!

345s-bspinnin · Dec 19, 2011

agdetail said:
mopar pcm go for $350-400 or 4 o2 sims for $300-400

On a Gen III, you can very easily go catless and still keep the OEM PCM happy. No check engine light and all emissions readiness o/k (meaning you will pass OBDII emissions type test). No simulators or Mopar ECU needed. PM me and I will reply with a solution and my paypal address

fqberful · Dec 19, 2011

FLATOUT said:
If I'm reading this correctly than you're saying for the gen 3 we need all 4 sims. Can you clarify?

Thanks,

Andy

NO!!!!!!!!!!! on a GenIII you only need 2 simms! The front O2's are to manage the mixture for running the engine.

mopar pcm vs cat sim for dd no cats?

agdetail

Enthusiast

Westxsrt10

Viper Owner

fqberful

Enthusiast

FLATOUT

Viper Owner

AbsolutHank

Enthusiast

FLATOUT

Viper Owner

345s-bspinnin

Enthusiast

fqberful

Enthusiast

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