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Discussion Starter #1
I have a 1988 mustang 5 0 with an e303 cam and some other basic bolt ons like distributor and intake, nothing big. I just want to know if the computer is tunable because is wont idle right .It will be idling fine a little high at probably about 900 rmp then just randomly start loping real deep and about at probably 600 rmp and almost cut off.
 

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If it is a speed density setup, you'll never get it to run right with a cam. You need to atleast upgrade to a MAF setup with a proper matching ECM.
 

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What he said is right...maf conversion....u dont need a tune for those mods

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Yeah what they said.

But for real the SD system is sensitive to vacuum changes so many cams do not play well with that system.

If you need to drive it around till you get a solution raise the idle till it becomes drivable like to 1k or so.
 
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