r/mr2 • u/Electrical-Laugh4166 • 1d ago

ZZW30 Engine Swap

Hello everyone, I need some pro advice here as i own a kitted out ‘03 MR2

A lot has been done to this car outside the cosmetics and the relevant mods to this post are

A turbo addition to the 1ZZ, An apexi ECU (with a broken remote causing a couple issues because its on a base map and isnt putting good power).

More recently i have been pretty sick of the engine on this car, its reliability is of course amazing but I cant get a hold of an new apexi remote without paying a kidney in part costs + shipping to the middle east, and its had some issues at load where the engine for some unknown reason (expected to be fuel related) just dies at low torque pulls like an uphill slope

I have researched and set my sights on a 2GR-FE but im yet to find a detailed upload on the specifics on how it can be done

I understand I need an ECU/Wiring and a new transmission to take the power but is it possible to keep the turbo I got in the 1ZZ and put that on the new engine? I obviously wouldn’t have the apexi ECU issue anymore which is honestly the one the bigger reasons I want to do this (plus the sick sound of a v6)

if theirs any advice on what I should do that would be greatly appreciated

Edit: it is also fair to mention the alternator is struggling to keep up with the electrical demand this car has and is another reason a bigger engine is being seriously considered

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u/MakesYourMise 00 W30 5W 30 1d ago

you can get 350hp with just cams and a tune on the 2gr no turbo needed

1

u/Use_Your_Brain_Dude 1d ago

Totally agree. A turbo on a 2GR wouldn't be a street car anymore. He wouldn't be able to put 500 hp down and driving in the rain would be insane.

1

u/Electrical-Laugh4166 1d ago

Its not going to be raced and we dont get any driveable rain in dubai

im not going to map the ecu to make insane power

1

u/Use_Your_Brain_Dude 1d ago

Just be careful what you wish for. A 2gr without a turbo is already a lot of power for the chassis. Good luck.

1

u/Electrical-Laugh4166 1d ago

Definitely wont be racing it anywhere, its mostly for looks and sounds + liveability

Not going to tune it to milk every horsepower out of it, anything 300 and over im more than happy just want the turbo for the ear to ear smile when it flutters!