Cams and Computer

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t3chn0dispenSR
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Cams and Computer

Post by t3chn0dispenSR » Fri Mar 15, 2013 3:42 pm

Okay so I have Crower stage 2 cams non-turbo that I am about to put in my DOHC. I have a Mopar Performance Computer and was wondering if that computer will be able to handle the new cams, or do I have to get another controller of some sorts?

sikoticbrown
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Post by sikoticbrown » Mon Mar 18, 2013 1:39 am

Cams will swap in just fine. Worst thing that will happen is you may have a pig rich idle and smell like a gas station. You may run into a "searching for idle" issue due to low vacuum and fat idle. It won't hurt anything, but your ego.

If that bothers you, you can get a SAFC or equivalent and back off fuel at idle. I've done this on my SOHC with a Crane 14. It still searches some, worse when it's cold.

Mopar PCM's are notorious for making a fat fuel curves anyways.
1995 2dr Plymouth Neon SOHC MTX

Crane 14, nitrous oxide, race ported head, SAFC 2, few more extras.

t3chn0dispenSR
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Post by t3chn0dispenSR » Mon Mar 18, 2013 3:16 pm

should I be concerned about running lean up top?

sikoticbrown
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Post by sikoticbrown » Mon Mar 18, 2013 11:42 pm

That's a possibility. Only way to find out is with a wideband or on the dyno. It should be okay. Mopar PCM's really like to fatten up the fuel curve.

Safe gambling would be bump up the fuel pressure a few lbs and then tune accordingly. More gas is better than no gas.

Buy a wideband. It's your best friend in this sort of game. It's money well spent.
1995 2dr Plymouth Neon SOHC MTX

Crane 14, nitrous oxide, race ported head, SAFC 2, few more extras.

t3chn0dispenSR
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Posts: 19
Joined: Mon May 28, 2012 8:14 pm
Location: United States

Post by t3chn0dispenSR » Tue Mar 19, 2013 12:02 am

Alrighty sounds like thats what I need to do. Thanks for the input.

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