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Old 04-07-2013, 04:34 AM   #41
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There are two issues here:

1) Fueling
2) Timing

Fueling: The VVT engine needs more fuel across the board than the 1.6. At some RPM/Load areas, it will require significantly more (ie near the redline), in some areas less than that. With a stock 1.6 ECU and a pressure regulator, you won't be able to make the fueling right. You will be very rich in some areas and very lean in others. And since something tells me that you won't even install a wideband, you won't even know, but you will be happy in your ignorance.

Timing: The stock 1.6 ECU commands more timing than the stock 1.8 w/VVT ECU. Add the supercharger (which significantly raises the IAT) and the boost it provides, and you now have a recipe for certain detonation. You need to be able to pull timing somehow, and there's no easy/cheap way to do it with a VVT engine.
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Old 04-07-2013, 09:46 AM   #42
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Wonder if blow-through carbs wouldn't be easier and safer...
Chop the FW a bit and add a distro as well.

Those electronics are scary...
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Old 04-07-2013, 10:04 AM   #43
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Quote:
Originally Posted by NiklasFalk View Post
Wonder if blow-through carbs wouldn't be easier and safer...

Those electronics are scary...
The dying art is almost dead.
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Old 04-07-2013, 10:33 AM   #44
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Quote:
Originally Posted by pakron1122 View Post
Anyway, gasoline burns best at a certain ratio, say 14.7:1. Adding more air via a supercharger throws off the ratio, which you must add more fuel to compensate. Now, I can do that mechanically with fuel delivery. The curve may not be exact, as the 1.6 ecu is expecting certain things at certain rpms which are now off. But you can get it close enough. So that is my thinking. Is that not correct?
The curve is going to suck ***. it'll be either lean before 5.5K so it's not too rich after 5.5K. or it'll be rich before 5.5K and then HELLA SUPER DUPER rich at 5.5K and then you'll wash out your ringlands and blow the motor.
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Old 04-07-2013, 11:46 AM   #45
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My plan is to use the stock 1.6 ecu.
You're in the running for the prestigious "retard of the year" award.
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