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Steeda CAI runs poorly in 2011 Mustang GT

Posted: Mon Jul 28, 2014 2:15 pm
by downeytim
I have installed the generic 100 mm 93 octane tune on my 2011 mustang gt 5.0. It has the Steeda Cold Air I just bought and Borla axle back S-Type exhaust. After the install of the tune the car is much less responsive. It acts like it is not getting enough of something at low rpm's below 2500. The power seems to come and go below that level. It also does not seem nearly as quick as the 93 octane performance tune I had one it before.

I have the ford_can_gas tunes loaded from the latest crom I loaded a few days ago.

Can anyone advise as to what I am doing wrong.

Re: Steeda CAI runs poorly in 2011 Mustang GT

Posted: Mon Jul 28, 2014 2:40 pm
by mikel
can you post the tunes from the tool here?

Re: Steeda CAI runs poorly in 2011 Mustang GT

Posted: Mon Jul 28, 2014 3:49 pm
by downeytim
here is the std 93 octane 100mm generic that I loaded.

Re: Steeda CAI runs poorly in 2011 Mustang GT

Posted: Tue Jul 29, 2014 2:00 pm
by downeytim
Were you going to post me a new tune to load or are you just checking that one out? Just trying to see where we are going.

The car is running poorly, so thanks for your help.

Re: Steeda CAI runs poorly in 2011 Mustang GT

Posted: Tue Jul 29, 2014 2:27 pm
by sohfast94
Could you get me a log at idle please?

Or a reading of the LTFT and STFT percentages will do fine as well.

Re: Steeda CAI runs poorly in 2011 Mustang GT

Posted: Tue Jul 29, 2014 6:34 pm
by downeytim
here is the log at idle you asked for.

Re: Steeda CAI runs poorly in 2011 Mustang GT

Posted: Wed Jul 30, 2014 11:14 am
by sohfast94
The only change between the regular 93 tunes and 100mm is the maf slope. Maybe the load calc is off. Try this.

Re: Steeda CAI runs poorly in 2011 Mustang GT

Posted: Thu Jul 31, 2014 7:40 am
by downeytim
The last one you gave me seems to be great when you open it up all the way. It is seriously quick. But it bogs down a bit at very low RPM's and it runs a bit rough when you are just cruising. It acts as if it is either starving just a bit or that it is wanting to go and you won't let it, if you know what I mean.

The standard tune has a very loud and deep additional tone from the engine than it ever did before, the Steeda I assume. But the latest tune you gave me does not have that sound. Don't care one way or the other just giving you info.

Thanks for the efforts so far. It is appreciated.

If you need some more information let me know.

Re: Steeda CAI runs poorly in 2011 Mustang GT

Posted: Thu Jul 31, 2014 12:03 pm
by sohfast94
See if this is any better.

Re: Steeda CAI runs poorly in 2011 Mustang GT

Posted: Wed Sep 03, 2014 10:00 am
by downeytim
I am going on a long trip, 2000 miles round trip. Is the tune you sent me considered a performance tune, race tune, or something else? Is it ok to drive long distances with the standard 100mm tunes or this custom version you created for me?

Thanks

Re: Steeda CAI runs poorly in 2011 Mustang GT

Posted: Thu Sep 04, 2014 9:35 am
by sohfast94
Just use the tune I posted it will be fine.