[DeTomaso] efi horse power gain

Sun Aug 9 11:59:08 EDT 2009

You mean to be perfectly "on line" without delay when programming?
If so, it is the "Dos problem" which most ecu:s is working on.
Windows makes for a delay which is very disturbing. However
W95 is Ok at least with Haltech.
Goran

The guys that did it commented on the FAST system as being good from a  
software point of view.
However, once I showed him the Electromotive software and where things  
were, he had no problem adjusting it.

One thing that surprised me... I had 34 degrees max of ignition. We  
found it made more HP at 30 degrees.

FWIW,
Kirby

On 9 Aug 2009, at 2:29 AM, Ken Green wrote:

> I'm not sure what the difference is between Bosch and Lucas, but if  
> you are going after high HP, I think you want low impedance (aka,  
> peak & hold) injectors.  A lot of stock ECUs can't provide the power  
> for low impedance injectors, but both the TEC-3 and FAST ECUs can.   
> The advantage is that a low impedance injector opens quicker, so if  
> you have a high flow rate injector, you can control it better at low  
> fuel demand.
>
> I have been told that it is easier to tune the FAST ECU, but that  
> may depend on who does the tuning.  I think you can actually spend  
> more on dyno tuning than what you pay for the ECU, so it's probably  
> best to get hooked up with an experienced local tuner and get the  
> ECU he likes to tune.  It also may be important that the tuner has  
> done 8 stack systems, but I'm just speculating on that.  Like  
> someone said, an EFI system is only as good as it's tuned.
>
> And, every expert you ask will give a different opinion.
>
> Ken
>
> --- On Sat, 8/8/09, boyd casey <boyd411 at gmail.com> wrote:
>
> From: boyd casey <boyd411 at gmail.com>
> Subject: Re: [DeTomaso] efi horse power gain
> To: "Kirby Schrader" <kirby.schrader at gmail.com>
> Cc: wkooiman at earthlink.net, "De Tomaso List" <detomaso at realbig.com>
> Date: Saturday, August 8, 2009, 5:00 PM
>
> I have been speaking to Gary at twm induction and they actually use a
> weber intake manifold and machine it to adapt the injectors . He said
> that the FAST computer was the way togo now adays. The system Mad dawg
> has was he top of the line back when he got it but the new fast system
> is supposed to be supierior. The important factors are sequentail
> injection vs batch injection, the speed of the system and how many
> injectors it cam control. Also lots of the Weber style EFI have the
> injectors and fuel rails on the out side and thats supposed to be a no
> no. Another big factor is the injectors. Gary told me the Bosch were
> far supierior.  ( cost around $300 or $400 more then the lucas
> injectors. Many of the systems are designed as EFI for dummies. No
> fuel return, no computer pprogram adjustmment neccesary. It seems to
> me if your going to bite the bulet for $6500.00 + you may as well do
> it right or just  go with a holley commander for around $2000.00.
>
> Boyd
>
> On Sat, Aug 8, 2009 at 6:33 PM, Kirby
Schrader<kirby.schrader at gmail.com 
> > wrote:
> >
> > Ah, yes.... another person doing
> > IR EFI on a GT40. Let us know how you get on!
> > Jack Houpe, Mike Trusty and myself all have a TWM setup with a  
> TEC3r (Jack uses a TEC2)
> > on our GT40's.
> > Each one of us attacked the twin tank fuel feed setup differently.
> > I need to re-plumb my fuel system. I have a 'better idea' than  
> what I am using now.
> > On 8 Aug 2009, at 11:23 AM, Julian Kift wrote:
> >
> > I am in the initial stages of an EFI retrofit on the GT40 with a  
> TWM IR
> > system. Even after getting a good deal on the TWM throttle bodies  
> and the
> > ECU it has cost far more than I care to tell in $$ and time (it's  
> all the
> > little stuff, plus the complexity of twin tanks in that application
> > requiring a swirl pot etc.). I constantly ask myself why I didn't  
> just buy a
> > Weber 48IDF set up and may even still do that.
> >
> > For the Pantera I have a Kinsler mechanical unit that I will  
> convert to
> > EFI and the ECU will be the DTAFAST (out of the UK), it is as  
> capable as a
> > MOTEC at about half the cost.
> >
> > http://www.dtafast.co.uk/
> >
> > Julian
> >> Date: Sat, 8 Aug 2009 10:54:49 -0400
> >> From: boyd411 at gmail.com
> >> To: wkooiman at earthlink.net
> >> CC: kirby.schrader at gmail.com; detomaso at realbig.com
> >> Subject: Re: [DeTomaso] efi horse power gain
> >>
> >> The EFI set up I am looking at and considering is basicaly the same
> >> one Mad dawg has. It is a twm Induction stack (looks like webers)  
> The
> >> ECU I am considering is the FAST ( I spoke to dawg and this is a  
> more
> >> upto date ECU then he has) Another key component are the  
> injectors.The
> >> two things I don't have are Mike Trusty and the CASH! I'm working  
> on
> >> the cash but I don't know what to do about Mike.
> >> Boyd
> >>
> >> On Sat, Aug 8, 2009 at 9:57 AM, Will  
> Kooiman<wkooiman at earthlink.net>
> >> wrote:
> >> > There's a very dramatic initial negative increase.  In most  
> cases, the
> >> > initial increase is the carbureted HP * -1.
> >> >
> >> > After a year or two of fiddling around, EFI catches up.
> >> >
> >> > Then you get smart and buy Mike Trusty a plane ticket.  You  
> treat him
> >> > right,
> >> > feed him, and brag about how your tires hook really well.  Then  
> M.T.
> >> > fiddles
> >> > for 15 minutes, and finally EFI surpasses your carbureted HP.
> >> >
> >> > But then you need better tires.
> >> >
> >> > -----Original Message-----
> >> > From: detomaso-bounces at realbig.com
[mailto:detomaso-bounces at realbig.com 
> ]
> >> > On
> >> > Behalf Of Charles Engles
> >> > Sent: Saturday, August 08, 2009 8:46 AM
> >> > To: boyd casey
> >> > Cc: Kirby Schrader; detomaso at realbig.com
> >> > Subject: Re: [DeTomaso] efi horse power gain
> >> >
> >> > Dear Boyd,
> >> >
> >> >
> >> >                  Perhaps Kirby Schrader would comment on  
> this.   He had
> >> > one
> >> >
> >> > of the Haltech EFI systems installed on his already healthy  
> engine back
> >> > in
> >> > the mid nineties and he has first hand experience about the  
> before and
> >> > after
> >> >
> >> > performance.  He was very happy with the change.
> >> >
> >> >                             Warmest regards,  Chuck Engles
> >> >
> >> >
> >> >
> >> > ----- Original Message -----
> >> > From: "boyd casey" <boyd411 at gmail.com>
> >> > To: "De Tomaso List" <detomaso at realbig.com>
> >> > Sent: Friday, August 07, 2009 10:50 PM
> >> > Subject: [DeTomaso] efi horse power gain
> >> >
> >> >
> >> >> Can anyone tell me what kind of horsepower increase one could  
> expect
> >> >> from the addition of a quality professionally setup sequential  
> efi to
> >> >> a Cleveland  engine?
> >> >>
> >> >> Boyd
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