How many miles to a tank with 600 + rwhp

[robiferretti]

runing a ractronics fuel system with KB boost a pump and 60 lb injectors, driving very non-agressively i went througha tank of gas in 170 miles, does that seem right? i rarely got the car into boost.

[FRC Tom]

LTFTs are most likely deep in to the negatives.
Fixed Rob's S/C car at the Fest.

[Nexus-6]

427TT here - normal driving with a few quick blasts and I'll get about the same, maybe 190 miles to a tank.

Typically I get about 110 miles to a tank though.

[BBaxR6]

Sheesh. I'm making 621whp, and I still get ~16mpg average, maybe 18-19 if I don't mash it

[robiferretti]

Originally Posted by FRC Tom

LTFTs are most likely deep in to the negatives.
Fixed Rob's S/C car at the Fest.

yeah it seems i am blowing through a lot of fuel when ever get into boost (judging from the cloud i leave behind)

[BBaxR6]

Originally Posted by robiferretti

yeah it seems i am blowing through a lot of fuel when ever get into boost (judging from the cloud i leave behind)

The "black cloud of death"???

[FRC Tom]

Originally Posted by robiferretti

yeah it seems i am blowing through a lot of fuel when ever get into boost (judging from the cloud i leave behind)

That's fuel build up from closed loop fuel trims being too negative.
Rob's car was doing the same thing.
My forged 347 with 60s was getting 24-26 hwy, 18-19 around town. Average 22.
If I put the cruise on I was good for 30.
Pick up my 408 15psi 2morrow to start the break in, should be 725+.
I'll post my fuel use.

[mdhmi]

I average 20 MPG with my TT setup. I can get around 30 MPG on the expressway with the cruise control set.

Mark

[Nat02Z06]

Damn, 9 mpg and you're not even driving it hard? I guess when you consider a stock 450 horse Viper averages about the same, it doesn't seen too bad considering you're making about 300 horse more. Even still, that doesn't sound right.

[tlaselva]

On my 500 mile trip back to Toronto from ECS, I averaged 28.7 mpg with cruise set at 75 mph.

Drop the hammer though, and you'd swear your flushing a toilet....

[eviLS6]

Originally Posted by robiferretti

runing a ractronics fuel system with KB boost a pump and 60 lb injectors, driving very non-agressively i went througha tank of gas in 170 miles, does that seem right? i rarely got the car into boost.

LOL!

Im sorry, I really laughed at that for some reason. Man thats like 9 mpg....

[Pakisho]

600+rwhp, Im getting 220-230 and Im enjoying the car. I'd get 400 if I was to cruise fwy only.

[WA 2 FST]

~17-18mpg city, and the one highway trip I did netted 27+mpg averaging 81mph. If I'd slowed a bit, it would have been a little higher.

[jersey jay]

17 cty
32-33 hwy

When I mash it I get 4-5!!!!!

[z06addikt]

Here are some stats...

RACETRACK MPG: 8 - 10MPG (WOT!)
HIGHWAY MPG: 33MPG @ 75MPH (AC ON)

You have to admire a car that can race with the best of them, them convert to a Honda Civic in MPG on the highway.