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2021 Roush Mustang Tuning (issue)

RoushRacer26

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2021 Mustang Roush stage 3 phase 2
I wasn’t sure whether to post this in the General forum or under maintenance but I figured it might get more eyes on it here.

Long story short I have a 2021 Mustang with the Roush stage 3 package. I’ve done some minor mods myself, mostly suspension upgrade stuff, and this past winter I had the supercharger ported for a bit more power.

Once I got the supercharger back and installed it I could tell a difference but I knew if I really wanted to notice anything significant I’d at least need to upgrade the exhaust.

This past February I decided to upgrade the exhaust and the fuel system. I installed Kooks 1 7/8 headers with the SS Green connection pipes going to a Roush X pipe mid pipe and Roush active exhaust mufflers. I purchased a Fore Innovations Fuel System Level 2 Triple Pump system and had it installed at a local shop.

After the fuel system was installed the automotive shop informed me that they were taking the car to the tuner to have it tuned and it would be good to go after tuning. This was around the beginning of April of this year.

Ever since the car went to the tuners it has been one humongous headache and just excuse after excuse from the automotive shop. They claim that since Roush locks their tunes that the tuner is having issues tuning the vehicle and flashing the new tune to the vehicle. They’ve been telling me this story for for almost 5 months now and I’m fed up. Surely someone has figured out how to unlock the Roush so that they can be tuned.

I’m just wondering if anyone else that has a Roush has dealt with this issue before and how they were able to get it resolved?

I just want my car back at this point, tuned or not. Between the automotive shop and the tuner I have been without my vehicle for close to half a year. Maybe it’s just me but I feel like that is a ridiculous amount of time for a shop to have a customer’s vehicle. It would be one thing if they were providing me a rental car, or another means of transportation while I feel like the tuner just continues his experiments on my Mustang 😡 but they haven’t and it has been a humongous hassle having to share a vehicle between my wife and I for this long of a time.

PLEASE ANY EXPERIENCED TUNERS or anyone who has experienced this issue with the Roush mustangs reach out to me and let me know how this can be resolved!! I’m definitely willing to pay cash for viable and realistic solutions!!
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engineermike

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The 2021 Roush are widely unlocked and easily tunable. Your tuner is either blowing smoke or has no clue what he's doing. There is absolutely no excuse for this and completely insane for them to keep your car that long with such a simple combination.

You didn't mention injector upgrades or E85; did you do either of these?

If not, then I'd flash it back to the stock Roush tune and take it home.

If so, then I'd flash it back to stock, put stock injectors and pump gas in it, and take it home.

If this were my car, I'd put a returnless fuel system back in it. If you're running pump gas then a BAP on a stock pump is fine. On E85 consider a BAP on a DW400 at the least, or a KPM system instead of Fore. Fore is outdated tech with lots of downsides. You'll also need an injector upgrade if you're running E85 on the ported blower. For the Roush setup, I'd contact @DRP Motorsports and get a remote tune. He has lots of experience with the Roush cars and will have that car making tons of power in short order.
 

PsychoPete

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What is 'Roush Stage 3 package'? Why are you stuck with the Roush tune? Can't you have a different shop put a different tune on it? When I had a BMW, I had a Cobb tune but there were 3 or 4 (at least) other tuning companies out there. If the tune doesn't work with your mods, put a different tune on it.
 

cgiles

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2020 RS3 here with a smaller pulley and tune. It can be done.
 

Swtbabybilly

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You need a new tuner, go with one of the big tuners wengerd or lund they will get you rite. By the way awesome car man rs3's are incredible machines best of luck with it
 
 








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