Re: [AMC-List] Fuel Injecting the big dogs

[Tom Jennings <tomj@xxxxxxx>]

On Wed, 6 Dec 2006, Widiker, John D wrote:

>  If you blow up the picture you can see MAP written on part of the
> harness as well as other connections, there is nothing that implies it
> doesn't have an O2 or other interfaces that I can see. Am I missing
> something?

The page for that new-fangled thing does say it likes a
wide-range O2 sensor. Even the Holley Projection or whatever it's
called stuff says it works better with feedback from the motor
(O2, etc). Most of the bad rep from the Holley etc I notice
are from NOT using feedback -- hence it's totally dependent
on finely tuned maps, which would have to change with tempo,
altitude, air density durin rain, etc making them a total pain
for daily drivers. For drag-racing it would be a LOT less hassle.

Carbs get "feedback" from venturi airflow. They obviously work
pretty well. They're generally terrible at altitude compensation.

tomj

> 
> -----Original Message-----
> From: amc-list-bounces@xxxxxxx [mailto:amc-list-bounces@xxxxxxx] On
> Behalf Of Mark Price
> Sent: Wednesday, December 06, 2006 7:22 PM
> To: amc-list@xxxxxxxxxxxx
> Subject: Re: [AMC-List] Fuel Injecting the big dogs
> 
> Just ask Dino over on the Strokers site how well his XJ Jeep runs! It's
> a mid nineties Export model. Which means no O2 sensor or mass air flow,
> It's always in "open loop". There were quite a few "open loop" cars out
> there that run fine. The first TPI kits ran "open loop" too.
> Closed loop is better, especially for emissions, but "open loop" system
> can be tuned to work amazingly well. Call it "old school" EFI.
> --
> Mark Price
> markprice242ATadelphia.net
> Morgantown, WV
> 
> 
> ---- Tom Jennings <tomj@xxxxxxx> wrote: 
> > On Wed, 6 Dec 2006, Swygert, Francis G MSgt 436 CES/CECM wrote:
> > 
> > > I haven't seen one -- I don't think it's in stores yet, but check 
> > > this
> > > out:
> > > http://www.retrotekspeed.com/
> > 
> > That's totally great!!!!
> > 
> > I'll wait to see how it behaves without the other useful feedback (air
> 
> > mass and flow, temperature, etc) but I don't see how it could be worse
> 
> > than a carb, and if done right, 10X better.
> > 
> > But I want a 300cfm 2bbl version! Boo hoo!
> > 
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