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Member Since 13 Aug 2004
Offline Last Active Yesterday, 06:27 AM

Posts I've Made

In Topic: Effect of Turbine AR and Volute

24 June 2020 - 07:14 PM

Interesting, thinking far outside the box.

In Topic: Megasquirt and AC

24 June 2020 - 08:42 AM

Well, you thought something was happening before, but there are tuning solutions.  You can put a row of higher timing to the left of your normal idle area, when the rpm drops as the compressor kicks in it increases the base timing and rpm's pick up again, you'll have to experiment to see what works best.  Maybe even a better solution is just below AC idle up, idle advance, you can program additional idle advance based on a few different variables.

In Topic: Megasquirt and AC

23 June 2020 - 09:18 PM


I don’t know....how do I find that...is there a place you would usually select when it was set up.

So it was never hooked up, I don't do that as a matter of course for my systems.  If you need to make it work you'll have to tie in somehow to the factory system for a signal.

In Topic: Megasquirt and AC

23 June 2020 - 09:23 AM

What signal do you have coming from the AC to the MS to tell it the AC compressor is running?

In Topic: PerfExpert dyno app

14 June 2020 - 12:07 PM

Pretty much what you would expect, the smaller turbine pushes the torque peak down about 1000 rpm and the HP peak 1100 rpm and both are lower.  What its not showing you is TIP (turbine inlet pressure) is now much higher, that's pressure between the exhaust valve and the turbine, more pressure is more heat, more heat equals higher probability of detonation.  Keep the octane up.