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Join Date: Apr 2014
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Piggyback ECU (or other) system advice
I am looking for input regarding which piggyback or other control system to choose. I have added an HKS (Rotrex) centrifugal supercharger to my 07 V6 Rav4, and I want to put in larger injectors.
The factory ECU handles everything (timing, fuel) pretty well with stock injectors. However, injectors are maxed out as it is, and I am considering upping boost slightly, within the specs of the supercharger (stock is 5.5 PSI, and it looks like it can do up to 6.88), and I'd also like to open the exhaust a little bit. So, the main consideration is larger injectors, and as such, that will be the primary (possibly only, at the start) duty of the piggyback or other system. Depending on the injector size I choose, it might only be modulating the stock ECU during open-loop running for fuel; In any case, it needs to be able to handle fuel control (and preferably modulation of a primary injector signal) well.
Cost is a factor; I will be trying to find the lowest price on whichever unit I choose, and if I find a particularly good deal on something, that might be the deciding factor. However, my preference when investing in a thing like this is such that I could use it later on, possibly even in another vehicle, for functions exceeding those which it will be serving now. So, price, performance, and functionality are all considerations.
I have been looking at the AEM F/IC 6, the Greddy E-Manage Ultimate, and eyeing the Apexi PFC and bigger AEM systems simply because prices have been almost comparable in some cases. I'd be happy paying a bit more for added capabilities later, but I want to avoid serious issues which might be known to plague a system, especially if those issues might lead to engine/transmission damage. I am definitely open to suggestions for models other than the ones I mentioned. I have tuned a full EMS before, so I'm not worried about complexity.
Last edited by biyanpian; 02-06-2018 at 06:40 PM.