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  • 2005 - 2014 S-197 Mustang -General/Talk-
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Tune ?

  • Thread starter Thread starter divad82
  • Start date Start date Apr 22, 2007
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divad82

New Member
Oct 25, 2006
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0
Apr 22, 2007
#1
  • Apr 22, 2007
  • #1
I had my car running on a 93 custom tune from VMP tuning but returned to stock because gas is riddiculously to high at the moment. I was thinking of getting a 87 performance tune but was also thinking of getting a 89 tune. My question is can you run a 89 tune with 87 gas. If not I will just get the 87 tune and use that for now. Thanks!

David
 
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chubhunter

New Member
Apr 1, 2007
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heartland
Apr 22, 2007
#2
  • Apr 22, 2007
  • #2
I was running an 87 oct tune briefly before I had a chance to fill up will 93 and switch to that tune. I thought the difference between stock and the 87 tune was very noticable. More so than the difference between the 87 and 93 tune. With the price of gas I wouldn't blame you.
 

red05bullitgt

Member
Aug 15, 2005
861
0
16
Pittsburgh, PA.
Apr 22, 2007
#3
  • Apr 22, 2007
  • #3
divad82 said:
I had my car running on a 93 custom tune from VMP tuning but returned to stock because gas is riddiculously to high at the moment. I was thinking of getting a 87 performance tune but was also thinking of getting a 89 tune. My question is can you run a 89 tune with 87 gas. If not I will just get the 87 tune and use that for now. Thanks!

David
Click to expand...

You can only run a lower octane tune with either the same or higher grade fuel for ie you can run an 87 tune with 89, 91 or 93 octane fuel but you cannot run a higher octane tune with lower grade fuel otherwise you'll end up with knock and pinging caused by leaning out the air/fuel mixture which may also cause detonation problems as well..
 
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