New CAI and 93 fuel tune question - Ford Mustang Forum
 
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post #1 of 10 (permalink) Old 02-17-2010 Thread Starter
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New CAI and 93 fuel tune question

Hi, I just got a CAI and an SCT tunner with a 93 octane custom tune for my 08 GT. Currently running stock on 87 fuel. The question is, should I wait for the tank to be near empty and fill it with 93 octane fuel and then do the CAI installation and the new tune or can I just install and do the tune and next time I fill the tank?

Thanks


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post #2 of 10 (permalink) Old 02-17-2010
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You don't want to take it near empty, or you'll pick up all the sediment at the bottom of your tank. Don't expect much from that tune, it's just a canned tune file made from another car like yours. Also just a CAI and canned tune, you'll never feel full potential until you have YOUR CAR CUSTOM DYNO TUNED, Mike. SCT Tuner.


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post #3 of 10 (permalink) Old 02-17-2010
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Just wait til your close to empty and fill it up with premium. If your really anal then wait for that tank to almost run out and then fill it again and install and tune. Canned tunes are fine for a CAI youll feel plenty of power. Id wait until you get a few more mods before dyno tuning.

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post #4 of 10 (permalink) Old 02-17-2010
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Yea, I used to believe the hype about how horrible canned tunes are, but I had my car dynoed and it did really well with a canned AM tune when it only had a JLT CAI on it. Air/Fuel ratio was good, etc.

Maybe a really good custom tuner can eck out a few more hp, but is it worth all that money for 4rwhp?

It would be very interesting to see a canned tune versus custom on the same car with only a CAI.
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post #5 of 10 (permalink) Old 02-17-2010
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+1, you can have a quarter tank left and fill with premium. the tunes aren't that aggressive where a little 87 octane mixed with 91 or 93 will hurt anything. Does the job till you get more mods, like mentioned.

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post #6 of 10 (permalink) Old 02-17-2010
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Quote:
Originally Posted by TheTeacher View Post
Yea, I used to believe the hype about how horrible canned tunes are, but I had my car dynoed and it did really well with a canned AM tune when it only had a JLT CAI on it. Air/Fuel ratio was good, etc.

Maybe a really good custom tuner can eck out a few more hp, but is it worth all that money for 4rwhp?

It would be very interesting to see a canned tune versus custom on the same car with only a CAI.
when i got my 05 dyno'd, i had a brenspeed tune and my tuner said if i got a dyno tune, i would pick up about 10rwhp. 10 is nice but not worth paying 150 to get that.
Oh, that's with full bolt on's and comp stage 3 cams. so they were pretty close on the tune.

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post #7 of 10 (permalink) Old 02-17-2010
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Quote:
Originally Posted by chr0m4k3y View Post
Hi, I just got a CAI and an SCT tunner with a 93 octane custom tune for my 08 GT. Currently running stock on 87 fuel. The question is, should I wait for the tank to be near empty and fill it with 93 octane fuel and then do the CAI installation and the new tune or can I just install and do the tune and next time I fill the tank?

Thanks
Run your tank fairly low then fill up on 93 and drive a little more before installing your CAI and uploading your tune. Just make sure you drive enough on the tank of 93 to get the 87 out of the fuel lines and get the 93 running into the engine and you should be good.

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post #8 of 10 (permalink) Old 02-17-2010 Thread Starter
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tank is near half full guess I'll drive it a little more and fill it with 93 before installing the CAI and the tune.

thanks for the answers guys!

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post #9 of 10 (permalink) Old 02-17-2010
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1/8th full is fine.

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And there better not be any junk in the bottom of your tank. Maybe that what you find on the older classic Stangs......


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