I just got back from fla and my mileage was 326 mi divided by 12 gal=27.1 It was 25.4 with my 18 inch wheels before my hiflo cat and hks twinpower.this was strictly hwy ,i95 on cruise most of the way.BTW the car is now for sale,or trade for supra tt.

 

Was this in a C5 vette. What does this have to do with a 3rd gen RX7?

 

nothing, just another asshate vette owner

 

Damn, that's really great gas mileage!

He has an FD guys...

 

Wow, you're selling your FD already.

 

our tanks hold 20.1 gallons...

 

hello! hiflo cat and hks twinpower= fd .And to the ******** who called me a asshat i owned rx7s since 1984 fb,fc turbo,and 2 fds.Make sure you know what the **** you are talking about before you start calling names.

 

yeah isnt our tank 20.1 us gallons

 

Who said he used a full tank?

 

HOLY ****! 27 mpg, good show! how did you do it?

 

If that is the case then that is preety amazing even with my twins I barely got 15 MPG and now with the single I get like 9 MPG if I am lucky...and that is only with the occasional WOT

 

Yeah 27 MPG is definitely the highest mileage I have ever heard of in an FD. But I get around 24 mpg highway when I am careful. Relevant mods are intake, smic, full 3" exhaust, and RX7.com ECU.

 

I inflated the tires to 35 psi,and let the cruise on for most of the trip. Dont forget its real flat here in sc to fla.The car was pulling -15 boost at 70mph.Synthetic in trans and rear and motor prob help too.The bottom line is that with the twinpower and magnaflow hi flo cat i am getting more power and better mpgs too .

 

The 35 psi in the tires is definitely going to help. Mine are stock pressure right now. I'm getting 24 mpg. I am going to inflate those tire right now. Gas just went up to $3.20 per gallon this afternoon. That's $60 for a tank! YIKES#$#&*!

 

Tires are expensive too. Overinflated tires will wear out quickly in the middle of the tread, and I'd estimate the benefit of three or even five extras pounds in each tire is marginal, especially compared to the cost of new tires.

 

with my mods i get 21 mpg in the FD...

 

$60 a tank? you lucky boy. To fill up my FD in the UK costs the equivalent of $115 US.

 

27mpg?! your kidding right......

 

That's cool, but only pertinent if you are thinking about road trips. I would imagine that a couple of hard accelerations would blow the average entirely. Mine makes 20, but I always got to gas on it a little bit.

I think the synthetics probably have the greatest impact. It is amazing how much parasitic loss this will address.

 

Just did 3 calculations on mine from its recent trips.

Around town imediately after tune and fitment of new goodies.

12MPG ...this involved some rather spirited driving (And almost NO gentle throttle driving)

20MPG .. this involved 200kms of highway and about 80kms of spirited test driving.

27MPG .. highway driving, a few mild hills etc included.

I only use 98 octane fuel though...

Mods are
1998 model Series 7, Apexi PFC, 1+ Bar boost (No creep of spiking..), 3.5" Full smb exhaust (Was custom until they decided mine was a good design and now they are selling it on their website..#%^&@%$&^), mildly modified air box. RX8 sparkplugs.

PS costs me just over $100 Aus to fill a tank up here ...so you Americans still have cheaper fuel than us!

 

oh. my. god.

 

I guess we can't complain, But i'm shure his are rising at the same rate ours are.

 

I've gotten as high as 24 and as low as 5mpg. 5mpg = wot eveywhere LOL

 

My fd is a 93 base,its the lightest ,no wing and small front splitter .That prob helps a little.

 

I have gotten 23mpg on long trips cruising at 80 so I can believe 27mpg if you cruise at a slower speed and have some mods (a lot of them actually increase mileage!)