DeTomaso Mailing List: April 2001, Message #66

> From: Richard Barkley <Richard.Barkley@trw.com>
> X-Accept-Language: en
> To: Thomas Tornblom <Thomas.Tornblom@Hax.SE>, "DeTomaso, MailList" 
<detomaso@realbig.com>
> Subject: Re: 351C EFI, its alive!
> 
> Way to go Thomas! Get that puppie on a dyno and see what it'll do.

I'll hook up the G-tech so that I can compare with the values I got with the 
Holley. I don't think I'll see any noticeable WOT gains, which never was my 
motivation. Driveability and cold start was the main reasons plus a hope of 
slightly better fuel economy. Gas is around $1/liter here so I hate wasting fuel 
if I can avoid it. Being a techie I also firmly believe that carburettors have a 
better place at a museum than in our toys ;-)
 
> 
> Also, you mentioned a few days ago that you plan to get a bigger MAF and
> injectors. Not sure what you got in there now, but it's unlikley you'll get
> much out of that. Perhaps only a few (<5 hp). Turns out most of the gains
> from the aftermarket MAFs (10-15 hp) that the Mustangers were seeing were
> due to recalibriation of the fuel curves (leaning out) and not due to
> better flow. If you're going to get an EEC Tuner you'll be able to do this
> the right way. And unless the injectors are maxed out (over 80% or so duty
> cycle) I doubt if you'll get anything from that. And you have a good chance
> of getting poorer driveability.

I believe the stock injectors are 19lbh, the throttle body is 60mm and the MAF 
is 58mm or so. I think your stuff is much beefier.

I have ordered an EEC-tuner, which I had shipped to a colleague in Palo Alto. 
Another colleague will bring it home in a few days.

I have yet another colleague that just recently bought a small handheld, battery 
operated oscilloscope/logic analyzer. I think I'll borrow that and verify the 
duty cycle of the injectors.

> 
> Richard

Cheers,
Thomas

> 
> Thomas Tornblom <Thomas.Tornblom@Hax.SE> wrote:
> <snip>
> > 
> > The trip was uneventful and everything worked according to plan ;-)
> > 
> > There was no sign of the bucking between 1500 - 2000 rpm it used to have 
with 
> > the Holley. Just smooth acceleration.
> 

Real life:      Thomas Törnblom             Email:  Thomas.Tornblom@Hax.SE
Snail mail:     HB Hax                      Phone:    +46  18 290 290
                Banvallsvägen 14            Fax:      +46  18 290 291
                S - 754 40 Uppsala, Sweden  Cellular: +46  70 261 1372