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Split Second Controller - 4 Injectors
$ 339.99

Split Second Controller - 4 Injectors

Save 6% Save 6%
Original price $ 362.00
Original price $ 362.00 - Original price $ 362.00
Original price $ 362.00
Current price $ 339.99
$ 339.99 - $ 339.99
Current price $ 339.99

Here at Damond Motorsports we carry and offer Split Second Controllers to allow you to add 4 additional fuel injectors to your Mazdaspeed or Ford Focus ST/RS. 

Whether you're adding our Mazdaspeed PI adapter plate, or converting to an ST intake manifold with our PI adapter, we've got your fueling covered! 

The AIC1-V4H w/4-channel tach is a highly specialized version of the AIC1.  It is specifically used to add four additional port injectors on 4-cylinder, direct injected engines.  As with the other versions of the AIC1, it is programmed with the R4 engine management software which is included.  Connection to a laptop is made through a USB to serial adapter cable which is not included.  The USB to serial cable we sell on this site is highly recommended.

Instead of an internal pressure sensor, the AIC1-V4H w/4-channel tach has a voltage input with a 0-5 V range.  The voltage input can come from a stock or external map sensor, or from an MAF sensor.  This means the load can be based on either pressure or flow and is not limited to a fixed range.

The AIC1-V4H w/4-channel tach has four separate tach wires.  A true-tach reading for engine RPM is generated by the four tach inputs.  Each tach wire is connected to the trigger signal on each ignition coil.  These tach inputs work with coils that are triggered by narrow 5 V pulses.  Modern Ford and Mazda and other direct-injected turbo engines use this type of coil trigger.

This unit comes with EV6/USCAR injector connectors.  This unit does not come pre-programmed.  It is essential that you load an appropriate map before running this unit on an engine.

Legal only for racing vehicles which may never be used upon a highway.

AIC1 Additional Injector Controller Data Sheet.

AIC1-V4H w/4-channel tach Instruction Sheet.

Customer Reviews

Based on 7 reviews


Yabnel Sanchez Nieves

Excelente servicio y Rapidez 100%recommended

All the fuel!!

Well put together harness packaging and instructions. I'm not too too happy with the software which seems outdated but it still works. Big step in my build. Accompanied by 4x DW 1000cc injectors and a AEM e85 320lph intank pump. Works as it should

Julio Suarez
Worked flawlessly

Works great and easy install. Ordered 4 injectors controller even I only have a 6th port injection and worked perfectly. Will take advantage of it once I go 8th port injection. Indeed r4 is old system but quick and easy map swap. Didn't bother me at all.

Joe schneberger
Old out dated much better out there

It doesn’t even show correctly on a laptop this is so old technology. If they at least updated the software it might be better. I consider it junk compared to what you can buy now at 450/500 even. Spend a few more bucks and get something that wasn’t made in the 80s from the looks of the included software.