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How to shoot flames on a 1uz with no IAC


dingdongdrift
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So i finally figured it out, i can now destroy exhaust valves whenever i please. I have a stock 1uz in my SC400 with the IAC removed and just idling with the throttle stop screw around 950rpm, anything below that and it won't idle during cold starts. For the last week i've been trying to get some flames to come out the exhaust, which it used to do on the stock ECU. I'm running a monsoonx btw. After messing around with the fuel values i finally got consistent flames that i can control and they don't just happen all the time. Obviously fuel cut on Decel is OFF. 

My timing from 3500-6500rpm is -5

VE table from 3500-6500rpm is 75 which gives me a lambda of around 0.8-0.85. anything more rich than that and nothing happens. 

now here's the best part, it only does it when i give it 3% throttle on Decel. if i close the throttle entirely nothing happens at all, which is great i think so it's not constantly just a flame thrower out the back. now i wanna figure out how to get my ECUmaster CAN keyboard to turn Fuel Cut on Decel on and off, cz holy crap i'm just dumping gas out. 

i know this won't work for everyone, but if you're dumb like me here's some base values to start messing around with. 

image.thumb.png.acb91241d3f5db48588e7638be78eba6.png

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3 hours ago, dingdongdrift said:

now i wanna figure out how to get my ECUmaster CAN keyboard to turn Fuel Cut on Decel on and off, cz holy crap i'm just dumping gas out. 

Leave overrun fuel cut off but setup a gp rpm limit as shown here, it should act pretty much the same as the overrun fuel cut shown but won't cut when CAN DI 1 is active.

 

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