[V8] interested in increasing fuel economy?

[Scott Justusson]

 Bingo.  And I'd bet any controller only makes mileage worse.  Mileage goals were not lost on the flagship v8 design back in the day.  Underbelly trays front and rear, small lightweight wheels, lightweight tires (michelin OE tires some of the lightest for their size), lightweight (UFO) brakes were all part and partial to the v8 optimal mileage routine (reciprocating mass).  The trans controller in 'E' mode was designed to not be 'Sport' mode by definition.  And considering the FMSS EPA test procedures, I doubt any aftermarket design controller will prove better than the stock shift control.

Scott D is right:  If you have to focus on the mileage of a v8, you are driving the wrong car.  Paul is right, increase the thermal, fluid and mechanical efficiencies will do more than throwing money at a black box that will more than likely prove the exact opposite in the 'mileage increase' theory, in practice.

I would add, make sure you leave the belly pan on, keep the engine in proper tune with proper spark plugs and a new'er 02 sensor, the direct benefits to mileage becomes as real as the right foot you are using to modify any baseline.  

my .02

92 v8 ABT Chipped

 

 

-----Original Message-----
From: Paul Jager <pjager at telus.net>
To: v8 <v8 at audifans.com>
Sent: Thu, Nov 7, 2013 2:31 pm
Subject: Re: [V8] interested in increasing fuel economy?


quackery of the first order. shifting down earlier increases fuel 
consumption & does not reduce it.  Also you can't just shutdown injectors in 
indirect engines not designed to do so. makes no sense to consider this.

you can reduce fuel consumption easily through physical means:

Purge the car of junk (reduce weight)
Lube the brake pins & pads so there is no drag
Low rolling resistance tires - ive done this and they do make a difference
Low engine oil viscosity - 5W15 or a 0WXX. I did this to reduce the head 
port oil leak and it was great.
We block off a section of the rad in the winter - more heat and improved 
aerodynamics

The kids averaged 12.5L/100km over the past year in rural mixed driving, 
best I've seen from Verboten (now forgotten but not gone!)




-----Original Message----- 
From: brat boy
Sent: Thursday, November 07, 2013 11:47 AM
To: scotty at advancedautomotion.com ; v8 at audifans.com
Subject: Re: [V8] interested in increasing fuel economy?

I think he wants aound 300 for the unit, but in Canada that return comes 
fast. Mind you, the return comes fast for anyone who drives a lot. Id rather 
it be out there and become a viable option then tell people not to consider 
anything. Its for those who might want it so all the power to them right? 
And yeah, at the moment I'm at 50 psi. It feels great but for the crap roads 
I seem to drive on a lot....

> Date: Thu, 7 Nov 2013 13:26:00 -0600
> Subject: Re: [V8] interested in increasing fuel economy?
> From: scotty at advancedautomotion.com
> To: excit97 at hotmail.com; v8 at audifans.com
>
> It's an interesting question but if you want fuel economy, your in the
> wrong car. i suspect the device your speaking of costs several hundred
> dollars at a minimum and I doubt that you'll increase economy more than a
> few MPG which would mean your ROI will be very long. The best thing that
> one can do to increase fuel economy is air up the tires to the max
> recommend pressure and drive like your driving Miss Daisy and that doesn't
> cost a dime.
>
> Scott
>
>
>
> On Thu, November 7, 2013 12:06 pm, brat boy wrote:
> > I was browsing our auto transmission online because I have such an 
> > active
> > and exciting life. I ran across a forum of BMW 8 Series owners whose 
> > cars
> > use the RWD version of our box. A forum member in Germany hated the fuel
> > economy and decided to get an engineer involved and they developed an
> > add-on box that makes the transmission kickdown come in earlier. It even
> > looks like the units might connect directly to our transmission control
> > units without their having to change the software. My question is, would
> > anybody be interested something like this?
> >