ignition upgrade

[Dylan Jenkins <dylan@vt.edu>]

Hey all,

A recent lister posted a message regarding impressions of a Jacobs eurolight
wiring harness. After calling Jacobs they wanted to talk about their bolt-on
ignition upgrade kits. They made some significant hp gain claims (i.e.,
10-15% under 3000 rpm, where the 4kq needs it the most) and also said that
the 3-prong Beru plugs I'm currently running would not work as the extra
juice from the upgrade would burn out the top of the pistons.

What's the bottom line on ignition upgrades? Are they needed for the 85-87
4kq? Is my $3-500 better spent on a throttle body mod.? (This car already
has a cam upgrade and I'm not interested in doing a turbo swap.....yet).

Thanks,
Dylan.
85 4kqs x 2