Gurney Flap

[PonyPapa]

Can anyone tell me how bad it is to run the Gurney Flap on the road. In addition to a warning label on the underside, there are 2-3 more warnings in the manual. Besides poorer gas mileage, would anything else be effected? Wanted to install and then go to the track to save the hassle.

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[Ctodd1]

For Track and show only. I would remove it for daily driving.

 

[_zOmbIE_]

I watched a bunch of reviews online and they had the gurney flap fitted and didn't even so much as mention any warnings or downsides, so not sure?

 

[Atlas1]

Only downside is mpg’s
Upside is it looks sweet. Run it!

 

[Carbide]

Even if it does hamper the milage a little...who cares? Buy a Honda Civic then.

 

[PonyPapa]

Even if it does hamper the milage a little...who cares? Buy a Honda Civic then.

Wasn’t worried about mileage (obviously) just curious why they are so concerned…that’s all folks.

 

[Carbide]

My dealer wouldn't even put mine on since it said off road only.

 

[PonyPapa]

Only downside is mpg’s
Upside is it looks sweet. Run it!

It’s on and yes, it looks sweet! Track is 40 miles away, I’ll report any issues after this weekend.

 

[Joe Mac]

I put mine on 2 years ago, looks great

 

[PonyPapa]

My dealer wouldn't even put mine on since it said off road only.

I put mine on 2 years ago, looks great

Just so weird they really insist running it only on a track. And not just a suggestion…very pointed statements.

 

[Atlas1]

Just so weird they really insist running it only on a track. And not just a suggestion…very pointed statements.

I’m almost positive it’s related to emissions. Ford doesn’t want the EPA swat team kicking in the door and shooting their dogs. If they advertise the car at let’s say 18 mpg and sell it with the flap on, and it only gets 17? RIP
Much easier to say “off-road use only” and let the customer do whatever they want.

 

[PonyPapa]

I’m almost positive it’s related to emissions. Ford doesn’t want the EPA swat team kicking in the door and shooting their dogs. If they advertise the car at let’s say 18 mpg and sell it with the flap on, and it only gets 17? RIP
Much easier to say “off-road use only” and let the customer do whatever they want.

LOL…I’m sure you’re right. Thanks

 

[dethmaShine]

If you are buying a M1, forget mileage. You are probably going to average out at 16-17.

Gurney flag hurts mileage and definitely pushes more downforce so your tires are used more than they should but I would not run my Mach 1 without it. M1 with gurney flap looks like a street demon and I highly recommend it.

 

[PonyPapa]

If you are buying a M1, forget mileage. You are probably going to average out at 16-17.

Gurney flag hurts mileage and definitely pushes more downforce so your tires are used more than they should but I would not run my Mach 1 without it. M1 with gurney flap looks like a street demon and I highly recommend it.

By the looks of them, after just one track day, not sure the tires are going to last much longer anyway. The cost of having fun.

 

[Coastal-Mach]

The Gurney Flap, reminds me of the fox body days with the classic Saleen wing. Still one of my favorites, and the HP wing with the flap is an instant classic.

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