Auto to manual

[spkrman]

well I'd "like" to see the 1nz built up... it has potential, and will maintain the handling of the car without major mods... 200+ to the wheels with a turbo, more with engine management/pistons, + very cheap to replace.

But yea, 300+ to the wheels reliably would be fun.

[eTiMaGo]

Originally Posted by spkrman

well I'd "like" to see the 1nz built up... it has potential, and will maintain the handling of the car without major mods... 200+ to the wheels with a turbo, more with engine management/pistons, + very cheap to replace.

But yea, 300+ to the wheels reliably would be fun.

180-200WHP should be possible with a bolt on turbo and ECU tweaking, but that would really be pushing the limits of the stock internals...

Even with new rods and pistons, lowered compression ratio and more boost, I would see it hard to get more than 250WHP without the engine becoming an uncontrollably peaky little thing. There unfortunately is no replacement for displacement.

But we'll see, there's just so many unknowns at the moment. I'm sure this engine has been modded to the extreme and then some in Japan, but how can we access that sort of information?

Oh and back on topic of the transmission swap... Looking through those technical manuals, it appears the Yaris' computer management system is somewhat modular, so it should IN THEORY be possible to remove the AT control unit without affecting the rest of the systems, but I doubt it's such a plug-and-play system in reality.

You should look through page CH-17 of the chassis.pdf and BE-9 of the Body Electrical.pdf files (available in the DIY section), and see if you can make more sense of this The ECM module is the one that controls the AT transmission, but it looks like it also controls the combination meter, spark plugs, and so on...

[spkrman]

Originally Posted by eTiMaGo

180-200WHP should be possible with a bolt on turbo and ECU tweaking, but that would really be pushing the limits of the stock internals...

Even with new rods and pistons, lowered compression ratio and more boost, I would see it hard to get more than 250WHP without the engine becoming an uncontrollably peaky little thing. There unfortunately is no replacement for displacement.

But we'll see, there's just so many unknowns at the moment. I'm sure this engine has been modded to the extreme and then some in Japan, but how can we access that sort of information?

tis a good Q... I'd like to know myself what has been/can be done with the 1nz.

175+ whp can be done reliably on stock internals... right now all we can really look at is what the XB/XA guys have been doing.

[Walter]

Etimago= Looks like its all controlled simultaneously. I dont know if the ECU could possibly be re-mapped (isolating the auto controls) by someone who knows what theyre doing. Not too sure if the programming would stick though

Originally Posted by spkrman

tis a good Q... I'd like to know myself what has been/can be done with the 1nz.

175+ whp can be done reliably on stock internals... right now all we can really look at is what the XB/XA guys have been doing.

I want to see it too, and if a turbo kit was around 2500 it would seem more realistic for the amount of horsepower... however, dropping 4500 for 175 or 200 hp?? I dont know, it just might be cheaper to do a full swap with new ECU, tranny, and built motor...