Quark25":nc05491q said:If you use launch control you will need to cut by ignition and not fuel. The fuel let in the exhaust makes the turbo spin.
Quark25":nc05491q said:It a BAD idea to cut rpm by fuel... You will lean out the mixture, the rest is logic.
A) the addition of a PWM capable idle control transistor allowing control of a PWM idle valve or a standard on/off type FIDLE valve without need for modification. This was a common modification applied to the v3.0 board and is no longer needed on the v3.57.
Quark25":1d7us1mr said:just for you not to burn that part down
While the TIP120 is a heavier duty transistor than the one on the V3.57, we have found the transistor that comes on the V3.57 is more than adequate for driving a PWM IAC valve without upgrading. We've used the standard transistor in the V3.57 to drive PWM IAC valves on several cars, one of which has been Megasquirted for over two years, and not had any problems. And we haven't had any V3.57s sent back to us with the transistor having burnt out (we'd replace it for free under warranty if such a thing were to happen). We don't believe that it is necessary to upgrade the stock IAC transistor to a TIP120
Thanks, they make it sound like it is recommended to upgrade as it isn't designed to deal with the load but it works perfectly fine anyway.Quark25":1qen2hy2 said:Okay.. That nice with the PWM valve, strange that they tell you to upgrade it in the ms2extra manuel.
I figured that would be a good idea. Unfortunately I only have 7mm slots in the trigger wheel so I might make a M8/M7 hybrid. Should be interesting.pit_celica":1qen2hy2 said:I'm saying this, because your trigger is smaller than the crank pulley.