SHOtime2511
CGP
And again,this is highway driving at normal speeds?
Mpg?
- Thread starter SVOFANATIC
- Start date
Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.
And again,this is highway driving at normal speeds?
SVOFANATIC
Active Member
Yea very little city driving maximum of 20 miles of that is city. speed on hwy is 70 maybe 75 rpms around 25-2800rpms.
I have brand new 02 sensors and I also have a catless Y pipe in.
I have brand new 02 sensors and I also have a catless Y pipe in.
Last edited:
SVOFANATIC
Active Member
Just thought I would update this. Back in may I was getting 20mpg full hwy driving to the dragon after running the **** out of it on the way back I got 25mpg guess I cleaned a lot of crap out of the engine. Then I ran 93 octane 0% ethanol through the car for three or so tanks. Last weekend went back to the dragon I got 29mpg 
12 gallons 375 miles getting better mpg than my mothers miata which is only getting 23. The whole trip up I was going 80mph+ 3100rpms or so. Haven't calculated my mpg back as my catastrophic wheel bearing failure I haven't driven it. When it failed it took my 2 month old cv axle as well as the hub with it. Pretty grewsome cv axle grese is everywhere.
12 gallons 375 miles getting better mpg than my mothers miata which is only getting 23. The whole trip up I was going 80mph+ 3100rpms or so. Haven't calculated my mpg back as my catastrophic wheel bearing failure I haven't driven it. When it failed it took my 2 month old cv axle as well as the hub with it. Pretty grewsome cv axle grese is everywhere.SHOtime2511
CGP
A little ATF in with your fill ups will help with that.
IIRC 2-3oz per gallon will clean everything up nicely.
29 highway is just about right though.
IIRC 2-3oz per gallon will clean everything up nicely.
29 highway is just about right though.
riden2low
New Member
Just thought I would update this. Back in may I was getting 20mpg full hwy driving to the dragon after running the **** out of it on the way back I got 25mpg guess I cleaned a lot of crap out of the engine. Then I ran 93 octane 0% ethanol through the car for three or so tanks. Last weekend went back to the dragon I got 29mpg
Wow, I wish my 93 ATX would do 25 or better. I have done all of the maintenance and changed out everything that I can think of. Running Champion plugs tho. But still up here in the NW we have to run 10% ethanol in our fuel. So that may be part of the problem. I drive 90 miles to the Coast every other week and my best mpg was 21. No codes either.
SVOFANATIC
Active Member
Only 3-4 gas stations around with 93 octane and no ethanol. It's also like 10-15 cents more a gallon than other places with ethanol.
SHOtime2511
CGP
The ATX kills it for gas mileage.
Last weekend went back to the dragon I got 29mpg
The dragon being Tail of the Dragon? If so there may be an alternate explanation.
SVOFANATIC
Active Member
Yes tail of the dragon.
These cars always seem to have a touch of rear brake drag, causes include caliper pin alignment, corrosion crushing the brake hose at the strut holder, and corrosion in the e-brake cable causing incomplete release.
The best highway mileage (~ 30 mpg) I got on the highway was after the road course event (NHIS) at the convention two years ago. They key was never applying the e-brake after the event (adjusts the pads inward towards the rotor). The flex in the rear hubs/brake rotors under hard cornering wears the brake pads back a hair, getting rid of the drag. Thats why I think you got better mileage during/after Tail of the Dragon.
To check for rear brake drag, set your e-brake as normal for parking on a steep hill, then release. Then take it out on an uncrowded highway and run it for a few miles (no braking), letting the car coast to a stop someplace safe. Feel the rear spokes/caliper for heat.
The best highway mileage (~ 30 mpg) I got on the highway was after the road course event (NHIS) at the convention two years ago. They key was never applying the e-brake after the event (adjusts the pads inward towards the rotor). The flex in the rear hubs/brake rotors under hard cornering wears the brake pads back a hair, getting rid of the drag. Thats why I think you got better mileage during/after Tail of the Dragon.
To check for rear brake drag, set your e-brake as normal for parking on a steep hill, then release. Then take it out on an uncrowded highway and run it for a few miles (no braking), letting the car coast to a stop someplace safe. Feel the rear spokes/caliper for heat.
SVOFANATIC
Active Member
Well I got 29mpg on the drive to the dragon. Idk what I got on the way bock from it.
Similar threads
