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Discussion Starter #1
what do you guys think of having a piggyback for our corollas? is it worth it? does it respond well to piggybacks? hmmm...
 

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The Return of the Red Coupe
2010 RAV4 V6
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19,665 Posts
rice.. reasearch before you post something.. you always find something new and end up getting.. :eek:wned: :lol:

I know you're very new to the car world but use the search buttons, use google.. or yahoo or something dude. :)
 

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The Return of the Red Coupe
2010 RAV4 V6
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19,665 Posts
piggyback computer or secondary ECU with more aggressive programming to make up for the generic programming on the regular ECU and mostly used like mike said when you've done cams, turbo or supercharged a motor or any major upgrade.
 

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2005 Corolla XRS
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309 Posts
What year Corolla do you have?

For the 9th gen corollas you can get a Camcom computer that will tune your VVT-i or VVTL-i and you'll gain a few noticable HP and TQ.
 

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please enlighten me as to how the camcom ecu will help a stock engine. i know you said it'll help with the VVT-i/VVTL-i setting but doesn't toyota pre-set those for the main reason of longevity of the engine? to me it seems like you'll be forcing the engine to run more aggressive and how much hp difference will it give you? just curious, coz it sounds like the honda boyz putting a VTEC controller on a stock ride. thanks in advance for the info.
 

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Discussion Starter #9
micro214_kp61 said:
please enlighten me as to how the camcom ecu will help a stock engine. i know you said it'll help with the VVT-i/VVTL-i setting but doesn't toyota pre-set those for the main reason of longevity of the engine? to me it seems like you'll be forcing the engine to run more aggressive and how much hp difference will it give you? just curious, coz it sounds like the honda boyz putting a VTEC controller on a stock ride. thanks in advance for the info.
true, but some of the 2ZZ celica gts guys have piggybacks for their stock motor and they're making noticable gains, and yes like 357wheelgunner said i believe it controls the lift
 

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2005 Corolla XRS
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309 Posts
The Camcom does not control lift on the 2zz, there is no lift controllers out yet, but some people are working on them.

The camcom tunes your motor for power. The stock ECU runs really rich to ensure long life and reliability. Cars make more power running lean than rich so the Camcom tunes it lean. However, running lean can be very very bad for your motor if taken too far.

Don't hope to hold your warranty if you start messing with the ECU.
 

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Resident asshole
Corolla
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The stock ECU runs really rich to ensure long life and reliability. Cars make more power running lean than rich so the Camcom tunes it lean. However, running lean can be very very bad for your motor if taken too far.
:eek: I dont know what to say....
But, stock ecu doesnt run really rich, because its bad for fuel economy, it will burn out the car quite early. Cars dont make power running lean, they make power running slightly rich, but thats not all, you need to have more air going into the engine and more fuel, thats why if you want power, you're gonna lose fuel economy.
Lets say you have one teaspoon of gas and air mixture (hypothetically), you wont get any more power by having more fuel than air in that teaspoon or vice versa, you need to add another teaspoon of the same mixture to get power.
However the engine can only suck a certain amount of that juice into it, per induction stroke, and no amount of intake installing/exhaust installing will help, because the head and the ports in the cylinder cant flow more air/fuel mix, that is the main bottleneck on most engines. Not to mention the stock valveshape and angles are bullshit, which dont certainly help peformance, but they are a compromise setup.
Thats why you want to enlarge the intake ports, and have a 3 angle valvejob and oversized valves done on a NA engine, combine that with some nice high lift- long duration cams and you can really go, but emissions and fuel consumption WILL increase, becuse at low rpm the large ports will cause the air speed to slow down and fuel will drop out and puddle in the intake manifold/intake runners.
Flowbench testing indicate that even a D16 head will flow better than a stock 4A-GE head, kinda scary huh? I gotta hand it, I think hondas suck, but those guys _DO_ know how to make engines flow air. They dont make much torque, but they do flow a high RPM relatively better than toyotas counterparts.

Heres a graph that shows that power is made on the rich side of the stoichiometric graph and fuel consumption at the other end, the stock ecu will try its best to maintain a stoichiometic fuel mixture in all except wot conditions, so fuel consumption is reduced.
 

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rice / 357wheelgunner... i'm not familiar with the Camcom system that's why the question. but, like Flashmn explained above, to make the power you need to run a little rich but not too rich. and if you're running too lean, it'll cause fuel starvation. you guys gotta get your info correct coz a lot of guys here are newbies and the last thing you want is spreading the wrong inforamtion to the world.


Flashmn... thanks for the very good explanation. i know, that's a compliment from me. cheers!:lol:
 
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