Gon’ Driftin’

Hampton Downs Club Circuit | 11/02/2017

A wicked day out and I learnt so much about the IS-F’s handling.  I also realised quickly that it is far more difficult to drift without a clutch or handbrake.  You really need to feint the car hard as inertia is the only way to setup a drift with it.

Other than a delaminating tyre destroying the rear guard and causing some related damage, the day went without a hitch and was worth it!

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ECU Reflash

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Finally got around to remapping the ECU on the IS-F.
Something which has been a huge challenge for many tuners over the years, the ECU has finally been cracked by RR-Racing and last week we loaded a new map which features:

* Modified Direct Injection / Port Injection fuel mapping
* Modified Ignition control (ISF has base ignition maps, cam timing dependent ignition maps, knock correction maps)
* Modified Intake and Exhaust variable cam maps
* Modified Torque to throttle mapping (allows us to enhance throttle response)
* Modified Rev limit increase to 7200rpm
* Modified CEL parameters (e.g., disabling of O2 sensor warning light)

The verdict? The car is an absolute monster to drive now. It has so much more power all through the rev range and is a definite recommendation to any IS-F owner who wants to extract more potential from the 5L V8 (~480hp).

APEXi Throttle Controller

Installed the APEXi SMART Accel controller last night on the IS-F.

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A quick and easy installation (took about 10 minutes) and the selection button conveniently mounts in one of the blanking spots on the dash.

The verdict?  A must to help with the lag on the standard drive by wire system.  Throttle comes on harder and sharper on purple and red modes and makes it very simple to lay big lines down the road if you have a lead foot!

Amplifier and Subwoofer Install

The Mark Levinson Premium Audio System in the IS-F is perfect bar one small thing, the bass is just a bit lacking when you listen to stuff with a bit of punch. The 8″ open air sub just couldn’t deliver the kind of performance we wanted.
Using the previous gear from the JZX100 we decided this time to build a custom box using high quality plywood (instead of traditional MDF) made to fit exactly between the strut towers and with an ideal design for the sub (2.5 cubic inch volume and slot ported).
All wiring is 2 gauge thickness and it powers a Digitalis DD1-1300S amplifier feeding 1300wrms (1 ohm) to a Kicker S12L7 subwoofer.
The amplifier is mounted on the back of the box and strategically placed so that you can adjust it though the centre pass through hole.
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