5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

Heads ques..

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Old Aug 7, 2006 | 09:30 PM
  #1  
91LXStang2727's Avatar
91LXStang2727
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Default Heads ques..

Do you need a tune when getting new heads? And how much are tunes generally?
Old Aug 7, 2006 | 09:33 PM
  #2  
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primetime5.0
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Default RE: Heads ques..

no you dont
Old Aug 7, 2006 | 09:38 PM
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Default RE: Heads ques..

If you get new aftermarket heads that flow more. then YES you need a tune
Old Aug 7, 2006 | 09:43 PM
  #4  
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Default RE: Heads ques..

How much do tunes go for generally? And i got a yes and a no so uuuhhhh...im gettin Afr 165's if it helps
Old Aug 7, 2006 | 09:47 PM
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Default RE: Heads ques..

Sometimes alot more head flow, will knock the computer off a little bit. Sometimes its a good idea. As long as your not running really rich or really lean it should be ok. But its still a good idea to have it done.
Old Aug 7, 2006 | 09:52 PM
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Default RE: Heads ques..

SoCal Diablo is going to Tune and Chip my car for $450
Old Aug 7, 2006 | 10:34 PM
  #7  
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Default RE: Heads ques..

You don't need a dyno tune just for a head change.
Old Aug 8, 2006 | 01:47 AM
  #8  
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Default RE: Heads ques..

If you got a 91 then you don't need a tune AT ALL!

It all dependes on how wacked the computer is when you go to get it tuned. First time I went to a dyno they charged $100.00 for 3 pulls and $100.00 for a custom chip which included removing the factory 6250 rev limiter.

I would suggest a tune just to make sure your making full horsepower. First ever pull I made was 211 RWHP and they fiddled with the timing and fuel injection and got it to make 227 RWHP consistantly on motor and 312 RWHP with a Zex 100 dry shot.

Old Aug 8, 2006 | 03:05 AM
  #9  
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Default RE: Heads ques..

A tune is a good thing, but if you have more mods to come soon, then do them first so you don't need to take it back after your additions.
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