...

 

No its not from a place like that. I went to the local shop.. it is called the "mustang shop" They downloaded the tune onto my SCT from the computer. and it is a 91 octane with the JLT.

 

Your tune is screwed up. You need to have them write you a new one or go buy one from someplace else.

Double check all your hoses on the intake.

 

thanks acascianelli I am heading down to the mustang shop and getting this solved.

 

Make sure all your hoses are attached and your intake/filter are snug.

 

Go back to the tuner who sold you the CAI and tune.
They will figure it out.

 

I had a similar problem recently....after I had been running fine on a custom tune with Roush CAI for over a year. My check engine light kept coming on and everything...code for "too rich" showed up on SCT tuner. Anyway, local shop told me over the phone that the jumping of RPMs and loss of power could be from a bad MAF sensor. Did you reinstall the MAF correctly into the new CAI tube? Did you damage the MAF sensor?
Luckily for me I found the problem before I spent $275 on a new MAF sensor....my air intake tube had come loosejustslightlyfrom the air-filter box and was screwing with the air flow and MAF readings. I tightened back down and haven't had any problems since.

 

Whitetail34 I just got back from the mustang shop.... and it was a fuel malfunction problem. They uploaded the rightcode into my tuner to solve theproblem and i put it in my car... And wow. It sure improved a hell of a lot from stock. a lot louder too hehe. Thanks everyone for all the help... It was a stupid code that screwed with my car... psh! go figure.

 

Get a new tune from someone who knows what theyre doing.