What sensors should I get?
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On The Tree
Joined: Jan 2017
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What sensors should I get? What sensors should I get for a SD tune, 2 bar or 3 bar, and does anyone have a specific they like? Also what about O2/wideband what's everyone using? Do i need them in both exhausts or can I get away with just one?
It's 6.0 in a 70 Nova with a couple small 61mm turbos, air to air intercooler and a HPtuner. I'm about 2 weeks away from wiring it so I'd like to get the stuff now.
It's 6.0 in a 70 Nova with a couple small 61mm turbos, air to air intercooler and a HPtuner. I'm about 2 weeks away from wiring it so I'd like to get the stuff now.
AEM UEGO is a really good and not too expensive. PLX is really nice, a little more than the ARM. I have both of them. You can run one, mostbpeople only run one. You can add a second bung to the other downpipe and swap the sensor every so often. 2 bar or 3 bar all depends on what you are planning to run for boost. 2 bar only goes to roughly 210kpa which is roughly 105kpa of boost, (about 16psi). 3.5 bar will get you 333kpa (Duramax sensor), roughly 228kpa of boost (about 33psi). 2 bar sensor may have more resolution than a 3 bar depending on the PCM as well. A little more of a refined VE table.
for setups below 18psi, I use a 2-bar map sensor. They only read up to about 15psi, but you can tune the final line "too rich" and it will lean out into the 18psi range. Turbochargers tend to "shoot right through to the target boost" so it will only be at 15, 16, 17psi for a mere split second, slightly too rich.
You always want to use the smallest map sensor possible, because you will have more resolution. Same thing with injectors, intake manifolds, and so forth. Even vacuum signal has "resolution", for example: Imagine you install a 10" diameter throttle body on an engine. Even just a tiny movement of the blade will yield an enormous vacuum drop, so the resolution at the gas pedal was lost. Now think about a stock throttle body or smaller, you can move the pedal more and have more control over the airflow going into the engine because you have more resolution.
Everything on an engine works like that; use the smallest, highest resolution parts possible in any way you can manage.
You always want to use the smallest map sensor possible, because you will have more resolution. Same thing with injectors, intake manifolds, and so forth. Even vacuum signal has "resolution", for example: Imagine you install a 10" diameter throttle body on an engine. Even just a tiny movement of the blade will yield an enormous vacuum drop, so the resolution at the gas pedal was lost. Now think about a stock throttle body or smaller, you can move the pedal more and have more control over the airflow going into the engine because you have more resolution.
Everything on an engine works like that; use the smallest, highest resolution parts possible in any way you can manage.
