While the V8 purists may disagree (like they do about everything), there was nothing wrong with the 3.8L and 3.9L V6 engines of the 1999 to 2004 base model Mustangs. Yes, it was pretty underpowered. Yes, it had two less cylinders than the V8. Yes, its exhaust note wasn't quite there (at all). These are minor issues that can easily be corrected with a few Mustang V6 performance parts from Stage 3. These OHV engines respond extremely well to even the most basic of Mustang cold air intakes, cat-back exhaust systems, and PCM tuning to get a little more power flowing to your Six-Shooting Pony's wheels. While all that's well and good, real performance comes from things like Mustang long tube headers and 3.8L V6 engine upgrades along with necessary custom tuning to really make these featherweight Mustangs stand out from the rest of the pack. Using our own Custom Tuning also qualifies you for our Loyalty Tunes Program where you can get free retunes for life on products you purchase from Stage 3 Motorsports!
What should my first mod be?
Always start with the intake system. The factory air box and inlet tubing are extremely restrictive and are a huge hurdle to making more horsepower and torque. Dropping in a new cold air intake and throttle body wil give you that extra power bump you need to start enjoying your Mustang again.
My A/C condenser wrecked my factory manifolds. Is there anything I can do?
An all too common problem with the 3.8L and 3.9L V6s. For the uninitiated, the A/C condenser likes to drip on the factory exhaust manifolds and will eventually eat them alive. The only real solution is grabbing a new set of headers. Go for shorties if you only need a quick replacement for stock. Grab a set of long tube headers if you want to get some more power out of your V6. In either case, we recommend headers that are ceramic coated to more adequately prevent wear and tear.
How do I get a better exhaust sound?
By getting a new cat-back exhaust kit. We recommend our dual exhaust kits that keep your factory Y-pipe in place (like our options from Pypes, Flowmaster, and Magnaflow) so that you stay street legal and don't lose torque.
What do I need to know about installing a dual exhaust?
For a dual-exhaust upgrade on a single-exhaust 1999 to 2004 Mustang V6 you'll need a dual exhaust kit of your choosing, a few extra hangars, some free time, and the knowledge I'm about to bestow. To get your brand new exhaust system around your factory V6's lower valance, you'll need to either cut in some provisions, bend your hangars to make your exhaust tips protrude lower, or get a rear OEM GT bumper or aftermarket GT rear fascia. Most importantly, a dual exhaust system can cause you to lose torque, especially those that replace your stock Y-pipe with a dual exhaust X-pipe or H-pipe. Because your 3.8L or 3.9L V6 doesn't put down that much power to begin with, the loss isn't always worth the sound gain.
I bought a fascia, but what do I do with the fog lights?
Because your V6 Mustang came from the factory without a fog light switch, you're forced to be a little more clever than Mustang GT owners when you buy a fascia with fog lights like the Roush Stage 3 Front Fascia. We always recommend just wiring them into your Mustang's headlights. Less hassles, and you don't have to purchase an entire switch assembly.
My clutch is toast. Save me!
And we can! We carry several 1999 to 2004 Mustang V6 performance clutches from Ram, including a low-priced factory replacement kit.