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1UZFE Ignition
Upgrade
When forced induction is
mention, two other topics also need to address. First
would be the Air which a turbo or supercharger would provide.
Second would the Fuel which larger injectors, larger fuel pump
or increase fuel pressure would solve part of the FI problems.
The third issue also need to address but usually neglect is the
ignition system. In order for the FI system to run
properly or tuned, we must upgrade the ignition system. In
this article I will cover ignition system. I dont know
much about ignition or electrical, but I will talk about what I
got in my car.
From my personal
experience, if you run less than 8 psi, the stock systems will
work fine. However, if you desire more boost. A
better ignition system is required. There are three ways
we can improve ignition in the 1UZFE engines.
1. Get colder spark plugs.
The plug of choice would be Denso Irridium and gap it to .035"
(.041-.044" is stock). You will notice a huge improvement
from the stock oem plugs. Again Denso Irridium is about 10
times a much. An average Denso Irridium is about $13.00
each and only available in major auto parts stores. Don't
try to ask for them in those Momma and Poppa auto parts stores.
They are just too expensive to stock them. Just the plug
upgrade will help a lot and you will notice less miss and
smoother acceleration.
2. The second option which
I don't have have yet would be a set of Nology Hotwires. I
have been using these type of wires for many years and
personally can give a positive testimony. Nology wires are
expensive. The retail price for a set of V8 wires is about
$300-$345. However, Nology doesn't make wires for the
1UZFE. They have to be custom made. The price for
complete set is $400. Please email me if you are
interested in those wires. Here is a picture comparing oem
and Nology Hotwires
Video. I should be getting that soon. This is
the second easiest ways to upgrade and improve your ignition
systems.
3. The last option I am
using now is the MSD Ignition system. In our engine, we
would need two units of 6A part # 6200. They run about
$225-$250 each and along with MSD Dual Igniton Adapter Part #
8912. Here is the
Wiring
Diagram of 6A from MSD. In my system, my engineer also
installed an bypass system just incase the MSD is down I still
can run the stock igntion. Here are some pictures of the
6A installation:
The above picture is has
two units of MSD. The red box is the Dual Ignition Adapter
and the red box below the intake pipe is the one of the two 6A
units. The two 6A units are stacked to save space and they
are highly secured to the firewall.
These two connectors are
from the computer industry to allow bypass if for some reasons
the MSD Ignition is down so I dont get stranded. I just
unplug it and re-plug into the other Male-Female configuration.
Here is a closer picture of the bypass connectors.
The connectors are located
just right adapter the stock igniters.
Here is a closer look at
the Dual Ignition Adapter.
Now you see the two units
are stacked together to save space.
Final view of the upgrade
ignition system. This upgrade is about $500-$700 and would
require experience engineer to do this. I don't recommend
trying this at home. I paid professional to install these
units. The engineer spent many hours testing my stock
ignition system first before installing them.
Remember,
more air will require more fuel. More fuel will require
more ignition. The last step would be the most extreme
setup and if you do all three steps, then are ready for Lextreme
boost. Good luck and I hope this article help your
ignition quest.
David
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