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Old 12-08-2011, 01:46 PM   #1
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Misfire??

So I just did a "Pi" swap & the car is running GREAT powerwise but the check engine light comes on & says I have a "random miss". It has new motorcraft plugs & new pep boys brand wires & about 3 month old "scream'n deamon" coils from summit. The car seems to shake a lot around 1000 rpm. Any ideas what this could be? Could it be because I haunt got it tuned yet?
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Old 12-08-2011, 06:37 PM   #2
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Anyone?
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Old 12-08-2011, 08:12 PM   #3
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i think tune is a good possibility
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Old 12-08-2011, 08:47 PM   #4
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Quote:
Originally Posted by 96 stang
So I just did a "Pi" swap & the car is running GREAT powerwise but the check engine light comes on & says I have a "random miss". It has new motorcraft plugs & new pep boys brand wires & about 3 month old "scream'n deamon" coils from summit. The car seems to shake a lot around 1000 rpm. Any ideas what this could be? Could it be because I haunt got it tuned yet?
It is probably because it isn't tuned. Also are you still using the npi brain. If so I can almost guarantee that's what it was. I'm about to do this myself. Any good suggestions or tips would be great.
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Old 12-08-2011, 09:49 PM   #5
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Yea I am using the stock computer. The only problem I had was with the dipstick (kind of a tight fit) & make sure the holes on the back of the "Pi" heads are plugged! I made a huge mess of oil on the floor because I didn't know about them. I also used this copper spray on head gaskets & exhaust manifold gaskets to help with heat transfer. I can post a pic later. Another issue I had was the line that runs under the intake didn't fit because the intake is deeper so we custom fab'd a line that runs to the heater core.
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Old 12-08-2011, 10:04 PM   #6
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Quote:
Originally Posted by 96 stang
Yea I am using the stock computer. The only problem I had was with the dipstick (kind of a tight fit) & make sure the holes on the back of the "Pi" heads are plugged! I made a huge mess of oil on the floor because I didn't know about them. I also used this copper spray on head gaskets & exhaust manifold gaskets to help with heat transfer. I can post a pic later. Another issue I had was the line that runs under the intake didn't fit because the intake is deeper so we custom fab'd a line that runs to the heater core.
That would be great. Can't wait to get mine done.
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Old 12-08-2011, 10:10 PM   #7
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I feel a pretty big difference in power. I can't wait to get it tuned.
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