Swapping ECU's?

[Dezod]

Ok. I do not get on this board too often, however let me enlighten those whom are unfamiliar with the Allan Phillips Racing systems.

The unit is an In-Line ECU. It is not a piggyback, and is not a standalone. It has properties of both and I will explain how and a lot of the cool functions it has to offer.

First, it has full closed loop and open loop fuel control. Most piggybacks do not offer both like the E-manage Ultimate, E-manage, S-AFC, Neo, FIC.....These unit s struggle (at best) to control the AFRs well and tightly around the stock ECU's strategy. The APR X1 does it flawlessly (if programmed properly). There is no pulse widths to enter like a standalone. There is no duty cycles to enter. There is no BS. Just enter the target AFR based upon load and engine RPM and be done with it. The tighter your injector transfer function is, the tighter the AFR control will be. The thing is SUPER accurate and provides mounds to data for easy tuning and no guess work.

Secondly, ignition timing is more like a piggyback in the fact that it lets the stock ECU make the final call for what it determines as far as spark advance. Your Spark Base table tune (allowing for both advance and/or retard) will provide an additional figure below or over the stock value. For example, say the stock ECU wanted 20 degrees at WOT, and you wanted 25, simply add +5 in those cells and be done. A negative 5 would yield 15 degrees of advance. This makes it easy and eliminates all of the guess work involved with ignition timing.

You can also alter the top speed, rev limiter, you get 2 step launch control, still works with ALL factory keys, accessories and such like a stock car. The OBD2 port is still active for emissions purposes for those of you whom have emissions in your area (unlike a standalone). All trouble codes are still active and in use too.

The real benefit of a unit like the APR is that is uses all of Toyo's millions of dollars of invested time and equipment to your advantage. Toyo spent countless man hours developing ECU fuel and ignition mapping strategies that you can now use to your advantage using the unit like the APR. The fact that you can custom sculpt a fuel curve and ignition curve with minimal effort and supreme accuracy is second to none.

If you become proficient with the APR unit, you do not even need a dyno to tune it. You can view the super sophisticated datalogging, make changes and see the air flow difference from one pull to the next. It doesn't get any better than that. Same deal for ignition timing too. You can see where knock occurs and when the stock ECU pulls out timing, and adjust accordingly. No fussing with custom knock curves and such.

I have tuned plenty of standalones and owned a complete standalone Lexus IS300 that we did with an AEM EMS, and this APR is second to none. The amount of data you can get and have from pull to pull, you don't even want to touch another system. My current DD has a custom APR on it, and it's an xB2. I love the darn thing! No cold start adjustments, no start extra fuel decay maps, no prolonged stat sync starts....Just turn key and go.

I will entertain and all questions regarding this unit and post datalogs and shots of the software to show that this unit is the future of modding Toyos.