Tuning Options - Toyota Yaris Forums

CTScott · 12-01-2015, 07:27 PM

A piggyback ECU will provide negligible gains at best on a NA car. For FI Yaris it is necessary, as the ECM is not designed to properly adjust the fuel and ignition under boost.

xnamerxx · 12-02-2015, 12:32 PM

Quote:

Originally Posted by CTScott

A piggyback ECU will provide negligible gains at best on a NA car. For FI Yaris it is necessary, as the ECM is not designed to properly adjust the fuel and ignition under boost.

I picked up something like 8hp/8tq on a fairly stock engine using an aftermarket ECU and 91oct. Cam timing on this motor is pretty conservative, the same goes for ignition timing, and fueling.

12-01-2015, 07:27 PM	#1
CTScott ULTIMATE View User's Garage Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008 Location: USA, CT Posts: 13,460	A piggyback ECU will provide negligible gains at best on a NA car. For FI Yaris it is necessary, as the ECM is not designed to properly adjust the fuel and ignition under boost. __________________

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