By on August 5, 2014

supercharger. Shutterstock user Steve Mann

TTAC commentator 1trikpny writes:

Hi, I’ve got a 2005 Mustang GT Deluxe,5spd, no Leather, no options. Black with 18″ chrome wheels, 285/35 Sumitomo HRT-Z 3’s, I’m the second adult owner.The previous owner bought it new, and at 40,000 miles installed a Saleen Supercharger with a Brenspeed Stage 3 tune. 500 hp at the crank. Currently at 63000 miles. I’ve added BMR LCA’s, Relocation brackets, and Panhard bar. this car has been very well maintained all of it’s life. No smoke, no noises, everything is just right.

So what’s the problem?

I can’t help thinking about breakage, so I’m thinking of selling it. I really like this car, and don’t even drive it hard, but I am well aware that stuff happens. Although money is not an issue, any I put into repairs would be gone as far as resale. Right now the car is worth every penny I paid, including the BMR stuff.

I won’t replace it if I sell, but I would certainly miss it. It always puts a smile on my face!

What do you and the B&B think? Am I just worrying too much? I do that naturally………

Thank you in advance for thoughtful comment,

Sajeev answers:

Ah, the classic “is this relationship too good to be true?” question posed by many a tuned automobile owner.  A scary proposition if this was a modified WRX with an unknown owner history, but somewhat benign with an adult-owned supercharged Mustang. Let’s find out why!

Assuming the computer recalibration is set for a healthy balance (in the air/fuel ratio) between component safety and dyno-pleasing power figures, there’s little to worry about.  Continue to drive like an adult on premium fuel and the engine should be fine, as supercharging Ford V8s is far from complicated or dangerous. It’s been that way for years. Ditto the solid rear axle: Ford’s 8.8 is robust, even the Camaro boys love them.

The only concern is the transmission.  While a stock Mustang gearbox is good for an impressive 360 ft-lbs, you could easily destroy it with hard launches/power shifting/regular application of full throttle on a supercharged Mustang.  But money fixes everything. Rather cheaply in a Mustang compared to other tuned machines, I might add!

The point: you are indeed worrying too much. Enjoy the “adult driven” Mustang and find a worrisome issue that’s worthy of your time.

[Image: Shutterstock user Steve Mann]

Send your queries to [email protected]com. Spare no details and ask for a speedy resolution if you’re in a hurry…but be realistic, and use your make/model specific forums instead of TTAC for more timely advice.



Get the latest TTAC e-Newsletter!

23 Comments on “Piston Slap: Ain’t Skeered of no Blown Stang!...”

  • avatar


  • avatar

    Sell it and get a Camry. All those mods and it sounds like you are scared to drive it hard for fear of breaking down. The car needs to be driven hard from time to time..

  • avatar

    This sounds like a “second car” scenario. If doable, this is one of those situations where you could use an everyday driver for most stuff and keep your Mustang for fun stuff. I say “doable” because it is expensive to have two cars and you’ll need a place, ideally a garage, to keep the Mustang when you aren’t driving it.

    It’s a dilemma that I have encountered many times and the second car scenario is what has worked for me.

    Good luck!

  • avatar

    Do you need the money more than the fun? If the answer is no, schedule a track day at your earliest convenience.

  • avatar
    87 Morgan

    It’s a Mustang GT Deluxe……With 40 + years experience building Mustangs Ford is well aware of what happens to a portion of the pony cars they build. In fact Ford will now sell you various iterations of modified Mustangs to save the average guy the hassle of sourcing and installing the parts.

    Worst case….you need a new Tremec 6sp, honestly they are not that expensive….

    Enjoy the car for F sake and take the afore mentioned advice and sign up for a track day….at the very least go to the open night at the local drag strip and find out how fast she really is.

  • avatar

    I am going to have to disagree with most of the other people and say you should sell it right away… to me.

  • avatar

    This car will work fine as a daily driver although you may not want to use it up that quickly. Just don’t drive it like you stole it all the time.

  • avatar

    Keep it, strap a giant gas tank on the back and you’ll be able to chase Lord Houmungus across the wastelands til the bitter end.

  • avatar

    As the owner of a modified WRX with an unknown ownership history, I am shocked at your assertion!

    But seriously…

    Modified cars need to be treated with a bit more care, but if they actually just up and broke on you with no warning, none of these supercharger companies would be making all that much money. Even the Subarus that Sajeev loves to hate can be plenty reliable assuming that you make reasonable modifications and maintain them correctly. Mine has about 150,000 miles and the only thing that’s damaged right now is the resale value.

    The one insurance policy you may consider is to find the most well-have them strap it to a dyno and take a look at your tune. Removing the regarded Mustang shop in your area and pay a couple hundred bucks to “black box” aspect of modifications a previous owner did will help set your mind at ease, and adjusting the tune to make it safer won’t cost all that much more if you feel so inclined.

  • avatar

    “I can’t help thinking about breakage, so I’m thinking of selling it…. Right now the car is worth every penny I paid, including the BMR stuff.”

    This statement intrigues me. Are you saying it’s worth every penny you paid because you see others just like it currently selling for that price? A $20K car with $10K in mods is almost never worth $30K. If you’re worried about “breakage,” justifiably or not, you should assume that prospective buyers will be as well and that the market-clearing price will reflect it.

    So keep it and drive the $%^& out of it with a song in your heart.

    • 0 avatar

      Doug from Seattle say’s…..

      Thank all of you for your replies!
      To answer the comments:

      Second car for sure
      In the garage every night
      I drive it, trust me
      I have a total of 14k in it/owe nothing
      Hellcat? Wouldn’t be prudent, but oh yeah!
      Brenspeed already toned it down a bit for me
      I monitor everything on Aeroforce gauges 24/7

      What a great group, Keep them coming!

      I’m keeping it, thank’s to all of you

  • avatar

    Don’t sell it…unless you want it to become the one that got away. Seriously, you’ll regret it.

  • avatar

    Man, I wish I had even 300 horsepower in my Thunderbird, let alone 500…

    Keep the car dude, don’t make a mistake!

  • avatar

    I would, however, take it to a track or an autocross so you can get used to its tendencies in a controlled environment. That’s a lot of power that can get you into trouble if you don’t know how to handle it. And I’m not just talking with the cops. Stomping on the gas in the middle of a corner can be fun if you know what you’re doing, quite messy if you don’t.

    And whatever you do, don’t drive it in Virginia if you can possibly help it. Actually, until they fix their fascist traffic laws (to them, going faster than 80 is a top misdemeanor just below a felony) just don’t go there, period.

  • avatar

    I put a blower and some other racing parts on my 66 VW back in 1968. You may scoff at that if you wish but my major expense became replacing soiled underwear. Seriously, if the speed isn’t your problem I see no problem with keeping the car.

    Mine was a daily driver and I drove it for about a year. It seemed to be bulletproof. It would play with most of the V8s it shared the street with for 1/8 mile but it was seriously scary when getting up to speed. I sold it and bought a 69 Dodge Coronet.

    I’m sure yours handles better and without knowing for sure I think I would keep it. A more intriguing prospect to me would be to put that blower and better suspension in a panther. That spells out “sleeper” to me. YMMV

  • avatar

    Driving a car like this gently can do about as much damage to the motor as hooning it. Give it horns now and then, that’s what meant for!
    Keep it until you have a real reason for letting it go.

  • avatar

    You won’t get back the money you spend repairing a “sensible” car either. I say enjoy driving it and pushing it some without beating on it.

Read all comments

Back to TopLeave a Reply

You must be logged in to post a comment.

Recent Comments

  • Land Ark: Everything about the late 80s could be summed up by showing a photo of the Pulsar tail lights.
  • 28-Cars-Later: Sadly stuff like it needs love and the pool of interested parties is not high to begin with and likely...
  • Arthur Dailey: Save the T-Tops! Bring back the T-Tops. A vehicle with a T-top, pop-up headlights and a manual...
  • dukeisduke: Back in the day, a girl friend (not girlfriend) of mine owned one of the earlier versions with the...
  • Lie2me: The old power steering was great, it allowed 7-year old me to sit in my dad’s lap and commandeer his...

New Car Research

Get a Free Dealer Quote

Who We Are

  • Adam Tonge
  • Bozi Tatarevic
  • Corey Lewis
  • Mark Baruth
  • Ronnie Schreiber