|
Technical
Downloads
On this page I will post documents, notes and videos pertaining to
the FAST EFI systems. |
|
So with so many people trying
out E-85 with their XFI systems, I have had a lot of questions about what
the correct target air fuel ratio should be.
Also, there's a lot of
variation occurring with the amount of Ethanol being added to the gas.
So I decided to post this chart
--------> |
 |
|
Download the EZ-EFI user manual
Click HERE |
|
6/26/2011
Many XFI users want to add or remove pins from the
connectors that plug into the XFI ECU.
This Youtube video should help
http://www.youtube.com/watch?v=M2vz6VAe_7Q
Also: If you need more pins:
Part # 170529 are the smaller pins (most locations)
Part # 170530 are the larger ones |
|
* NEW Tuning Guide
I have added a quick tuning guide to this page. More and more customers are doing their own tuning. The actual FAST
documentation is accurate, but not printed. You must install the software
on your laptop and select HELP to see the documentation. It's very thorough, in sequence,
and includes everything you need to know; but I have had customers tell me that
once they had their system installed and the basic parameters have been set,
they wanted a quicker document that sort of went through the tuning process
in a overview step-by-step process.
So I wrote the document Setting up the FAST XFI System.doc
I hope this can help. This is for PRE 2.0 users.
If you have 2.0 then download Setting up the FAST XFI System -
Version 2.0
Little things are often overlooked such as:
* The system will never go into closed loop or learn if CTS (warm up fuel) is being
added.
* The throttle follower can hold the IAC open if the basic idle throttle setting is
too high.
* Using the "G" key to see a 3D version of the VE table really helps
to smooth things out.
* Using the "L" key during closed loop tuning to help select the
correct VE value in real time.
|
|
* Direct interface with
Racepak Systems:
If you're a racer you know that the Cadillac
of drag racing datalogging systems is the Racepak V300 and V500.
Well now you can buy an interface from Racepak that talks to your FAST ECU
and therefore can log all the pertinent FAST information such as A/F
ratios, Injector duty cycles, and really anything that you want to know
from the FAST ECU. The interface is expensive at $395 but boy, is it
cool!
* Convert Dual Sync Accel distributors to
work with FAST.
FAST now has dual sync
distributors for Mopars,
but
Accel also sells dual sync Mopar distributors. But they
need to be modified slightly to work with FAST. Hard to do? Nope.
Maybe 20 minutes max. Click HERE
to get the document, or just buy
the distributor from us and we'll do the modifications in advance - for
free!
* XFI Traction Control ? ***
Click HERE
for the document ***
This is a mode that will not limit the rate at
which your car can accelerate. By monitoring the "change"
in driveshaft speed over time, the ECU can learn and determine
whether the tires are slipping, and then retard the timing to try and keep
that acceleration rate in the range that you select. There's much
more to this, so click above for all the info.
|
*
New "Beginner" menu mode.
The latest version of
the FAST system allows to to start with the menus in the beginner mode,
then step up to intermediate and eventually Advanced if you want.
This really helps when you just finished the installation and all you
really need is the important stuff that's all in the beginner mode.
* The FAST ECU can now control your TRANSBRAKE
??? Yep ...
You have got to be
kidding - right? Nope. If you're a bracket drag racer you know that
there's only two things you need to do to win ANY race: Cut a light, and
run the number. Staging your car is critical. Using the trans-brake
control feature of the XFI, a driver would be able to engage the
trans-brake from the “pre-stage” bulb, hit the gas, and then use the
trans-brake control function to allow the vehicle to roll (or really
creep) into the staged position. This can be done under the
operator’s control or be totally automatic, allowing the driver to
concentrate on the tree for more consistent reaction times. This is
especially useful for turbocharged cars where you need more time to
“spool” the turbocharger. |
|
< -------------- Here's a drawing
of the newer LS2 - LS7 fuel injectors.
These injectors use higher fuel pressures (~58 PSI),
and the require the newer USCAR connector.
(I have adapter pig tails)
They are available from about 33 Lbs/hr (400 HP) to 85 lbs/hr (900 HP).
|
|
New software to use with your FAST A/F meter.
XFI Articles in Word format:
All
you wanted to know about EFI but were afraid to ask chapter 1
All
you wanted to know about EFI but were afraid to ask chapter 2
All
you wanted to know about EFI but were afraid to ask chapter 3
All
you wanted to know about EFI but were afraid to ask chapter 4
All
you wanted to know about EFI but were afraid to ask chapter 5
EFI and Flex Fuel
EFI and AF Ratio Control for a Bracket Car
Converting
an MSD Distributor to generate a CAM Signal
Here are a few tips when running a roots type supercharger with EFI:
XFI
tricks when using a Supercharger
Here's a few tips about in-car tuning:
Quick - In Car Fine Tuning
Here's a Sequential EFI timing diagram:
Sequential System Timing
Here's a document about how to use the XFI system with a
turbocharger:
Turbo boost Control
|
1-
Overview and How EFI Works
(These are fairly large files so
wait for them)
5-Initial_Setup
I know I skipped a
few chapters, but this is just a teaser as to what's on the DVD.
Go to the PRODUCTS
page to get the complete DVD.
Click HERE
to see a video of Mopar Engines West 2006 Engine Challenge Pump Gas motor
(now belonging to Rich Nedbal) after converting it to EFI. This
engine was first detuned to add reliability and consistency. It will
be used in a Pump Gas Dragster called the "Pump Gas Bandit"
* Rockers were changed from 1.6 to 1.5 ratio.
* Compression ratio was dropped to allow lower octane fuel.
* Crank scraper was removed because a dragster style pan was used.
* Unported intake manifold was converted to EFI and used as-is.
|
