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Will ported heads = running lean?

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Old Oct 30, 2007 | 01:53 PM
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Default Will ported heads = running lean?

I'm adding a set of ported heads with stock compression. I was wondering if it would cause the car to run a little lean.
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Old Oct 31, 2007 | 09:23 AM
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Someone that tunes must know this. TTT
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Old Oct 31, 2007 | 10:51 AM
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Originally Posted by MJD
Someone that tunes must know this. TTT
No, Becouse after you change the heads youll get it tuned, so it will be just fine

Seriously though, you cant change the heads like that without a tune, it wont run right.
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Old Oct 31, 2007 | 11:02 AM
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I'm planning on a tune, just curious how it will affect my current tune since I'm running an 11:1 AFR.
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Old Oct 31, 2007 | 12:31 PM
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Originally Posted by MJD
I'm planning on a tune, just curious how it will affect my current tune since I'm running an 11:1 AFR.
Curious as to why you would tune it to 11-1 AFR? Wayyyyyy rich.
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Old Oct 31, 2007 | 12:34 PM
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I didn't do the tune but found out after I put it on a dyno for fun. It only has a street tune right now.


Last edited by MJD; Oct 31, 2007 at 12:42 PM.
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Old Oct 31, 2007 | 02:16 PM
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Changing the heads alone wont to anything to the tune. Do you have a cam? Is the cam matched to the heads?

You may pick up some power but to spend the $$ on ported heads and not take advantage via the proper cam is wasting money.
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Old Oct 31, 2007 | 02:33 PM
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See sig for mods. I guess I should have phrased it "will it run rich with heads" because that is my main concern. I'm not going to be doing any WOT runs until it's tuned but I do need to know if I can make it to the tuner OK.
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Old Oct 31, 2007 | 03:54 PM
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with the existing rich tune, I would not worry to much about a SHORT drive to the tuner unless you changed the CR.

More Than Zero
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Old Oct 31, 2007 | 03:57 PM
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I'm stock compression. What's short, I have to go about 45 min. (other side of town).
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Old Oct 31, 2007 | 07:09 PM
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Originally Posted by M_T_0
with the existing rich tune, I would not worry to much about a SHORT drive to the tuner unless you changed the CR.

More Than Zero
agreed
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