Exh ratio is a TunerPro calc of Exhaust Back pressure / Intake manifold pressure (so above screen grab 13.5/10.16 = 1.3).
Gives an idea of the restrictions and efficiency of the entire system, ideally you want 1 or less (ie making more boost than there is pre turbine pressure) but normally this is going to be pretty laggy. Under 1.5 I think is a reasonable compromise from what I can find.
Toyota Powered VL Calais
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Re: Toyota Powered VL Calais
That's interesting. So how does it calculate the exhaust pressure? Do you add a sensor?
- VL400
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Re: Toyota Powered VL Calais
Pics of the sensor here .. https://pcmhacking.net/forums/viewt ... 320#p84007
- delcowizzid
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Re: Toyota Powered VL Calais
Anywhere up to 2:1 Is acceptable closer to 1:1 The better and use pressure at the turbo for your calcs not inlet manifold
If Its Got Gas Or Ass Count Me In.if it cant be fixed with a hammer you have an electrical problem
- VL400
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Re: Toyota Powered VL Calais
Yep, for a turbo only PR then I use the inlet to cooler pressure sensor (its another TP calc ). But for this I wanted to see it as a whole with the different cooler and how it all works together at higher RPM/airflow.
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Re: Toyota Powered VL Calais
some tech in this thing now
No matter what the question is, the answer is always more horsepower!
Just starting out? Have a read of the getting started guide
Basic tuning of a delco ECM with $12P thread
Advanced tuning of a delco ECM with $12P thread
Just starting out? Have a read of the getting started guide
Basic tuning of a delco ECM with $12P thread
Advanced tuning of a delco ECM with $12P thread
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Re: Toyota Powered VL Calais
Fucking love this thing mate,
I've always loved these engines from way back, looks like a nice neat setup. cant wait to hear more from this!
I've always loved these engines from way back, looks like a nice neat setup. cant wait to hear more from this!