Increasing MS3 fuel efficiency.

[Young Roids]

what were you coming from that got 13mpg?

 

[Super Unique]

a Jeep wrangler unlimited rubicon with 4 speed auto tranny, 6,000 lbs 4:11 gears and lots of steel welded onto it

 

[FrequentFlyer]

You should have just installed a large bong into the carb and had a passenger pour gas down it while you drove. Geez...

 

[Super Unique]

Yeah it was a pig. But it was a pig that went damned near anywhere. Perfect urban assault vehicle. Stuck on the expressway? not a problem. Lock in low range, lock front and rear axles, aim for the concrete barrier and make that u-turn, or just go over the guardrail and down off the highway

 

[UHATEIT]

Cruise control adds a good 2-3 MPG. Going into boost at all is downright stupid for gas mileage. Turbo cars throw extra fuel in the cylinder just to cool down the chamber, which means less mpg for you. Just drive the car like a prius and you might get high 20's

do you mean cruise control takes off a good 2-3 mpg??? I alwasy thought cruise control lowers your mpg. Maybe I was wrong the whole time I thought cruise control took off mpg as it was like a motor running, similar to having the ac running. If cruise control is a good thing for mpg then s*** I'll use it from now on!

 

[PaulVincent]

I already posted this on another thread, but I'll post it here too. My best mileage to date has been 38+ mpg over a 181 mile trip. Mostly it was Interstate, and I was drafting semis whenever possible. This meant that I was often going 60-65 mph. Before achieving this mileage, I never thought it possible. This was with 32 lbs. pressure in the tires and on an 80 + degree day. Also, I constantly watch the fuel consumption read out, and I try to avoid any excessive throttle pressure. Prior to this technique, I was averaging considerably fewer mpg.

 

[slikshoes]

The best I have gotten so far was 31 mpg for a full tank. The computer claims 33, but 31 is what I calculated. This entails 90% interstate driving at 65mph. I coast down hills when I can, and I try my best to drive behind big trucks. When in the city, I shut off the car when at long traffic lights.

 

[KaiserSoze]

Every study or test of this I've ever seen (Mythbusters, Consumer Reports) has put the extra load of the A/C unit being about the same as the extra drag on the vehicle from the windows being rolled down.

Also, can someone confirm this for me? Under normal or light acceleration, boost shouldn't be kicking in. You have to get onto the throttle pretty hard to get enough exhaust pressure to get the turbo spooled up, even from 3k to 5k. IE: Throw the car into 6th on the highway, slap cruise on at 60mph, and us the steering controls to speed up, and you shouldn't be hitting boost under that sort of acceleration, right? I'd check myself but, no DH or boost gauge.

I watched that Mythbusters. Twice. The injectors actually weren't injecting any more fuel between windows up, no A/C as windows up with A/C. Windows down, no A/C used more fuel. I know, that sounds crazy, but they logged injector cycles. Perhaps the only efficiency you lose with the A/C on is just H/P instead of actually using more fuel.

 

[rjs_speed3]

hey guys, sorry to be kinda off topic, but i remember a loooong time ago, someone showed me how to hack the setting for you gas mileage and all.. but just recently i took my car to the dealership to get a new cd player and the "set" button no longer shows me my gas consumption..... i've tried holding down "set" "cd" and ""sat"... no go... i'm not even sure if im doing it right...

can someone PLEASE tell me or show me or post a link to exactly how the hack is performed... PLEASE...

Thank you in advance!!

-RJ

 

[Galvatron]

do you mean cruise control takes off a good 2-3 mpg??? I alwasy thought cruise control lowers your mpg. Maybe I was wrong the whole time I thought cruise control took off mpg as it was like a motor running, similar to having the ac running. If cruise control is a good thing for mpg then s*** I'll use it from now on!

It doesn't use any more power than turning a dome light on. You get better mileage because it keeps your speed steady and you're not constantly adjusting.

 

[lestat13]

@ 65mph with CC on my car seldom gets over 0 psi. It usually hovers at about 10 Vac.

Dashhawk shows anywhere from 10-12 vac for me. I can keep closer to 8vac with a really steady foot and no CC.... but I doubt it makes THAT much difference and can cramp your ankle

Side note, yeah, get a dashhawk!! You change your driving habits when you can see how all the little things you do affect the vehicle. You change a teeny bit here and there, and you're making another 2mpg consistently!

 

[stevekt]

I got 24.5 mpg on my last tank. I usually get a bit more than 20 mpg. I think it's because I've been hitting the freeways during off-peak hours.

 

[milehighspeed3]

With the Accessport Economy map I got 32.5 calculated, 34 on the car. That's up from 26+ calculated, 28 in car for my usual DD. I only did it for 1 full tank. Oh, I do have Cobb intake on for both...

 

[Young Roids]

With the Accessport Economy map I got 32.5 calculated, 34 on the car. That's up from 26+ calculated, 28 in car for my usual DD. I only did it for 1 full tank. Oh, I do have Cobb intake on for both...

if this is true I would take back all the nasty things I said about cobb and their ap. And I would buy one myself. Can anyone with more than one post vouch?

 

[D_Roc7822]

I got 25 mpg my last tank.. seems like ever since I added my cobb SRI and FMIC my gas mileage went up quite a bit. Im also not hammering it all the time either.. but do give it a couple pulls here and there. A good 98% of my driving is city..stop and go. I was getting around 270 a tank before SRI and FMIC.. then it dropped to like 240 a tank.. now I got 310 + on my last tank. This thing is weird.. thats all I know.

 

[FrequentFlyer]

if this is true I would take back all the nasty things I said about cobb and their ap. And I would buy one myself. Can anyone with more than one post vouch?

You say that now until you're driving along in econo-mode and want to kick someone's ass in a race, step on the gas and there's nothing there....

 

[milehighspeed3]

Young Roids- I'm sorry I'm not a frequent poster, here at least. I'll see what I can do in the next month to go economy map for an entire tank again. It's tough, as the "new" stage 1+ map is what I was expecting from the AP from the start.

Frequent Flyer- true, in economy mode, it was a bit frustrating at times when I wanted to play around on the freeway.

 

[Young Roids]

This is a different disscussion for a different thread I guess but as far as performance with the ap goes I have still not seen independent dynos for it wich is very suspicious imo.

 

[coololddude]

i get way better mileage since i stopped hauling fat chicks around. i do miss the lowerd look though!

 

[Uze DaFarce]

08.5 bone stock. When my wife drives she gets over 30 mpg, when I drive I get closer to 19.

She drives 90% freeway, 5 over, CC, and very non-aggressively.

I drive 90% city (and country), at least 9 over, CC, and very aggressively (like I stole it).

We are both overweight and tend to carry 100 or so pounds of extra stuff (mostly wife's work stuff, laptop, etc) around with us. I am not convinced a little extra weight makes much of a difference in a 3k+ lb car with this much HP/Tq.

She has a very long commute, and it's nearly all freeway. If the AP economap could get us another 6 MPG with her driving, that would totally justify the purchase to us, just in gas savings alone. However, from what I understand about how it works, it would make very little difference for someone who drives like my wife, with 90% freeway miles. And I am sure you know damn well I would never run that map when I am driving.