[DeTomaso] efi horse power gain
Kirby Schrader
kirby.schrader at gmail.com
Sun Aug 9 01:28:10 EDT 2009
Boyd,
TEC3r does sequential or batch. Whatever you want. 2, 4, 6, 8, 12
cylinders, turbos, superchargers, etc. etc.
I'm using sequential injection with a cam sync.
Speed of the system... Don't know what that _really_ means or how it
pertains to performance.
Every system out there will react fast enough to what's happening with
the engine.
Otherwise, it wouldn't work and nobody would buy it. Dunno... just
speaking as an electronics engineer.
TEC3r will handle 16 injectors. How many do you need?
:-)
My system has fuel rails on the inside (GT40), but the Pantera has
outside fuel rails.
Older system.... I don't know why fuel rails on the outside are a 'no
no', but am willing to learn!
Did he give you a reason why?
Let me guess... longer rails/fuel lines and more fuel pressure
variation from front to back?
That's the only thing I can think of...
The biggest issue I have with the Pantera setup is I have a side pull
linkage.
Same as some Weber setups. It works well. I hardly ever had to adjust
it.
But it leads to a really 'snappy' low RPM throttle response.
The GT40 has the latest TWM progressive center pull linkage with the
'wheel'. Make sure you go with this!
It's the 'cat's pajamas', as my Mother used to say.... really a
pleasure to drive.
Bosch injectors are definitely the way to go. I use Marren Motorsports
for a lot of EFI stuff.
http://www.injector.com/
They will calibrate the injectors if the ones you have are used or you
just want to be sure. You send them in, they send them back.
I had one on the #2 cylinder of the Pantera that was a couple of
percent off and would run leaner than the rest.
They fixed that. No, I don't know what they do to 'fix' them. Never
asked.
Both my systems use fuel return.
What else do you want to know?
:-)
Oh! And yes, I agree with you. If you're going to spend the money, go
the right way and all the way.
Of course, after the hassles I had with my GT40 (the harness, mostly),
lots of the Space City guys give me a hard time.
Individuals will NOT be named, of course.
;-)
Regards,
Kirby
On 8 Aug 2009, at 7:00 PM, boyd casey wrote:
> 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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