Cobb AP fuel economy

[sjvicker]

What kind of fuel economy were you beta testers getting with the AP and what were your mods? I saw a few weeks back someone mentioned an economy map but it's not on their website, can anyone elaborate?

[civic tech]

i just got back from vacation. i had to drive 200 miles each way. so for the total of the 400 miles i averaged 37 mpg. and i have an I/H/E.

[COBB Tuning]

I will also let the Beta testers chime in but we have seen on average increase of 3-7mpg and in some cases up to 8mpg and this has been on our tuned staged maps including our Stage2 I/H/E map. These results were obtained in mix city and highway driving conditions with the best improvements on the highway.

Travis Geny
COBB Tuning

[blacklabel7470]

I have the Stage2 Injen CAI map ( i/h/e ). I avg 28-30mpg mixed highway/city with a lot of spirited driving . Before it was about 25-26 each time.

[patsmears_07_Si]

I have the stage1 INCAI map with only a CAI and open highway was averaging from 41-43.5mpg between 65-55mph. This was during my 20mile segment of open highway driving home from work. Combined city and highway in my morning commute is around 35mpg. I hit up to 90mph on the open highway and some spirited driving in between.

I am looking forward to driving home for the 4th of July(500mile trip) to see what I average on pure cruise.

[Hammer5]

and these mpgs are on a fuel economy based map?

[Vantage]

Originally Posted by Hammer5

and these mpgs are on a fuel economy based map?

As he mentions above, its on the stage 1 INjen intake map.

From everything ive read, there is no "econo map"

[Hammer5]

wow.. these mpgs without an econo map.. nice.. will be looking into either the AP or the flashpro.. gonna wait and see pros and cons of both

[TdotSi]

I don't get why there is significant economy with the basemap provided from Cobb. Wouldn't the people at Honda try to make the Si as economical as possible without sacrificing power? How is it the tuners at Cobb are that much better at tuning than those who created the vehicle?

[sjvicker]

So basically an increase of 3mpg makes the cost of the AP a wash at 68,000 miles and an increase of 7mpg makes the cost of an AP a wash at 33,000 miles.

[quickfit]

Originally Posted by patsmears_07_Si

I have the stage1 INCAI map with only a CAI and open highway was averaging from 41-43.5mpg between 65-55mph. This was during my 20mile segment of open highway driving home from work. Combined city and highway in my morning commute is around 35mpg. I hit up to 90mph on the open highway and some spirited driving in between.

I am looking forward to driving home for the 4th of July(500mile trip) to see what I average on pure cruise.

your going to base your 41mpg highway on a 20mile trip? lol

you need to at least average a few gallons of gas to get your MPG.

[maxxnitro88]

Originally Posted by TdotSi

I don't get why there is significant economy with the basemap provided from Cobb. Wouldn't the people at Honda try to make the Si as economical as possible without sacrificing power? How is it the tuners at Cobb are that much better at tuning than those who created the vehicle?

it is because in order to make power, the map is leaned out a bit. so when you are just driving around, the car uses less fuel.

[chaohliu]

Originally Posted by maxxnitro88

it is because in order to make power, the map is leaned out a bit. so when you are just driving around, the car uses less fuel.

bingo!

[pux888]

Originally Posted by TdotSi

I don't get why there is significant economy with the basemap provided from Cobb. Wouldn't the people at Honda try to make the Si as economical as possible without sacrificing power? How is it the tuners at Cobb are that much better at tuning than those who created the vehicle?

A bit of extra fuel in the stock mapping leaves more room for error across a larger range of driving conditions, leaving a decent safety buffer.

[pux888]

Also to address the statement that tuners at Cobb are better is a bit of a misunderstanding. They are working to optimize the balance between power output VS safety. Honda's engineers spend countless hours and dollars creating stock maps that cover all the bases. So its not a who is better at tuning, its more along the lines of who
s tuning meets your personal goals for your car.

[Phalanx]

This has been explained time and time again... and has nothing to do with Cobb themselves. The product is great. This is directed at those who seem to think they need/want a 'fuel economy map'

The concept of that is just absurd... any good tune will yield greater fuel economy at light load, part throttle, easy driving while also providing maximum performance during spirited driving and WOT.

When you tune, you dont just set a single value and call it a day. you set all values for all different throttle positions, rpms, cam angles, etc, etc... so, you have a completely different fuel map, etc for low rpm, easy driving than you do for when you are romping on it.

Im not sure how else to explain this so that it makes sense to people.

[Hammer5]

Originally Posted by Phalanx

This has been explained time and time again... and has nothing to do with Cobb themselves. The product is great. This is directed at those who seem to think they need/want a 'fuel economy map'

The concept of that is just absurd... any good tune will yield greater fuel economy at light load, part throttle, easy driving while also providing maximum performance during spirited driving and WOT.

When you tune, you dont just set a single value and call it a day. you set all values for all different throttle positions, rpms, cam angles, etc, etc... so, you have a completely different fuel map, etc for low rpm, easy driving than you do for when you are romping on it.

Im not sure how else to explain this so that it makes sense to people.

Professor Phalanx you speak it well

[maxxnitro88]

then why do i have a green button on my car that says econo-mode?

oh wait that is the insight...

nevermind

[patsmears_07_Si]

Originally Posted by quickfit

your going to base your 41mpg highway on a 20mile trip? lol

you need to at least average a few gallons of gas to get your MPG.

As you quoted my original post I hope you also read that I can't wait for a 500mile trip. This would be 2 fill-ups and it will be July 4th just to re-iterate that I'm waiting for my first long distance trip to ensure these numbers are reliable. As for my daily driving these results have proven valid in my increased total mileage/fill-up and this makes me happy especially my wallet!

I'm continuing my logging of daily driving and my average city/highway is still in the 35mpg area.

Hope this answers your semi-question/constructive criticism.

If you have any questions about the product or experience please feel free to ask.

[patsmears_07_Si]

Originally Posted by Phalanx

This has been explained time and time again... and has nothing to do with Cobb themselves. The product is great. This is directed at those who seem to think they need/want a 'fuel economy map'

The concept of that is just absurd... any good tune will yield greater fuel economy at light load, part throttle, easy driving while also providing maximum performance during spirited driving and WOT.

When you tune, you dont just set a single value and call it a day. you set all values for all different throttle positions, rpms, cam angles, etc, etc... so, you have a completely different fuel map, etc for low rpm, easy driving than you do for when you are romping on it.

Im not sure how else to explain this so that it makes sense to people.

^ good laymans terms. The total efficiency of the engine is modified not just the performance.