Advice on MAP ECU-2 purchase

[Gibbon]

Hi

I've got a 1jz-gte with new turbos, 440 injectors and 3" exhaust - it's all run by a Blitz chipped ECU.

I'm looking at whether it's worth getting one of these piggy-back units (2nd hand)

MAP ECU-2

I don't want to go a full blown replacement ECU ( too much $$$ ) - but I want to increase the current boost and perhaps have a little room for tweaking for some extra power.

According to the webpage - this is what it will do.

Manifold Absolute Pressure Electronic Control Unit 2

The MAP-ECU2 (Manifold Absolute Pressure Electronic Control Unit) is a major functional upgrade over the MAP-ECU with the following additional features:

* Full Timing advance and retard control of up to eight (8) channels for Distributor, Group Fire or Coil On Plug configurations using a 20 x 19 (380 zone) table.
* Auxiliary Injector control using a 20 x 19 (380 zone) table.
* OEM O2 Sensor Adjust 26 x 19 (494 zone) table allowing control over Air/Fuel ratios, even in Closed-loop mode.
* Expanded RPM scale now up to 10,000 RPM.
* Two (2) complete sets of Fuel, Timing, Auxiliary Injector, O2 Adjust and EBC tables selectable using a dashboard mounted switch.
* Electronic Boost Control with 1000 RPM target boost points.
* Launch Control
* Fuel Cut Defender
* Speed Cut Defender
* Built-in 35PSI MAP Sensor
* External MAP Sensor option
* User selectable pressure scale configurations

Any thoughts on whether this would be of any benefit over a simple boost controller and the blitz?

Thanks

[Duk]

I've looked at these before. Their real claim to fame is their ability to remove the airflow meter and provide an AFM signal to the factory ECU. Given the 1jz doesn't use an AFM, it would be just like most other interceptors on the market.

I do have a personal preference, the Trust E-Manage Ultimate. Their biggest selling point (to me, anyway) is their ability to intercept and modify the injector signal. This is ideal if you have fitted a bigger set of injectors like you have, and allows you to achieve desired air/fuel ratios without trying to fool the factory computer by telling it that the engine is under less load than it really is (modifying the output from the MAP sensor before it go's to the factory ECU).

Others claim to achieve good results with traditional load sensor modifiers and bigger injectors, but you will change the ignition timing (advance it) when reducing load sensor voltage to the ECU.

My 2 cents

Enjoy.