2005-2014 Mustangs Discussions on the latest S197 model Mustangs from Ford.

sct tuner question

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Old Dec 26, 2007 | 09:08 AM
  #1  
mattstang2007's Avatar
mattstang2007
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From: Granger, Indiana
Default sct tuner question

can you actually bump up the rev limiter, with the tune i have now it redlinesat 6500 rpm but i think i would like 7,000. can i do this myself with my tuner? if so is there a reason i shouldnt go that high? has anyone done it them selves?
Old Dec 26, 2007 | 09:14 AM
  #2  
06Redfire3V's Avatar
06Redfire3V
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From: Oklahoma
Default RE: sct tuner question

Yes you can change it yourself, I have mine set at 6750..

I'm not sure if you can go to 7k
Old Dec 26, 2007 | 09:23 AM
  #3  
acascianelli's Avatar
acascianelli
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From: Sterling Heights, MI
Default RE: sct tuner question

7000rpm probably wouldn't be a good idea. I wouldn't go higher than 6500rpm.
Old Dec 26, 2007 | 09:28 AM
  #4  
mattstang2007's Avatar
mattstang2007
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Default RE: sct tuner question

thanks for the quick answers , i figured 7000rpm would be bad, but what are the reasons? i probably wont do it but i am curious as to what might happen. anyone else runnin more then 6500rpm?
Old Dec 26, 2007 | 09:37 AM
  #5  
wingman75's Avatar
wingman75
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From: Sterling Heights, MI
Default RE: sct tuner question

The possibility of a blown engine.
Old Dec 26, 2007 | 09:52 AM
  #6  
acascianelli's Avatar
acascianelli
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Default RE: sct tuner question

I'm not sure, but I don't think our rotating assemblies are balanced for much beyond 6500rpm.
Old Dec 26, 2007 | 09:53 AM
  #7  
mattstang2007's Avatar
mattstang2007
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Default RE: sct tuner question

ok well then i definatly dont even wanna risk it. thanks guys
Old Dec 26, 2007 | 11:13 AM
  #8  
howarmat's Avatar
howarmat
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Joined: Sep 2006
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From: IN
Default RE: sct tuner question

6800 would be the most i would use......get a dyno of your car and see where the HP curve starts down, if its @ 6500 then no reason to push the car past that point
Old Dec 26, 2007 | 11:18 AM
  #9  
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sailing220
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From: Minnesota
Default RE: sct tuner question

My Brenspeed tune is set at 6800. [/align]
Old Dec 26, 2007 | 11:45 AM
  #10  
Gene K's Avatar
Gene K
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From: Decatur AL USA
Default RE: sct tuner question

I have my in gear limiter set at 7200 rpm and the out of gear limiter at 6800 rpm.
Why? Because the PCM starts to close the TB 400 rpm short of the RPM Limit.

I have just got the SCT so I am still experimenting. But so far the car is reacting to shifts just the way
the math told me it would. I am a little to much of a chicken to push shifts past 6750-6800 rpm.

Im making the 1-2 shift at 6750 rpm because the gap between these gears is so large.
A 6750 rpm shift puts you at 4000 rpm after the shift.

Im making the 2-3 shift at 6500 rpm.
This places you at 4300 rpm after the shift.

I cross the finish line at 6500 rpm in 3rd (Stock 3.55's)

Results are in sig.

According toa Ford Powertrain Engineer the connecting rods are rated to 6800 rpm.
Thats assuming no Power Adder. The more Boost/N2O you run the more the rpm has to be limited.

Edit: Ideally we would have a 2.95 Low Trans and 6500 rpm shifts with4.56's but I dont see that happening.

YMMV Use at your own risk. If it goes "BOOM!" your on your own.



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