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Problem w/tune after Roush cold air intake installation

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Problem w/tune after Roush cold air intake installation

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Old 11/14/18, 03:55 PM
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Problem w/tune after Roush cold air intake installation

Good afternoon all! This is my first post to this site. Earlier this year I purchased an '18 GT Premium. Shortly thereafter, I installed a Rousch cold air intake and took it to a local shop that prides themselves on tuning Mustangs. First off, I will admit this is not a daily driver (I drive it on average 1x/week). However, every time I have driven the car it has thrown the yellow wrench and the car essentially cuts almost all power and I'm forced to limp my way to safe area and reset the car to factory stock. I consulted with the dealer, as well as Dallas Mustang and both have advised that the wrench means it's a throttle body issue. The installer of the tune just keeps telling me to bring it in "again" and they'll "try" to figure it out. Also, I'm of the understanding that the new '18 GT with the 10-speed automatic is to have somewhere between 435 and 465 HP. After the tune, they told me that the car was only producing 417 HP.....how can this be? I'm pretty novice when it comes to these types of workmanship issues, so I'm just looking for some more guidance and advice on next steps. THANKS!!
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Old 11/15/18, 04:59 PM
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Did it have any issues pre roush cai? What kind of tuner?
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Old 11/15/18, 06:02 PM
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No issues at all prior to cai. It is a CST tuner I purchased from the folks that did my tune/dyno.
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Old 11/16/18, 05:05 AM
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A few questions...

1. Who did the install?
2. Did you get the CAI from Roush with the Roush PCM flash
3. Was the restrictor tube installed in the intake tube?. If so then the tune you were sent is designed for the larger intake trunk and if it was installed, may be the source of your problems.
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Old 11/18/18, 10:31 AM
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The 417 HP I am thinking that may be rear wheel HP. Double check that
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