Your Boost Gauge is Bogus.
The problem with a boost gauge is that it only measures air pressure. Your engine doesn’t care about pressure alone. It cares about Manifold Air Density (MAD), which considers pressure, temperature, and humidity. The higher the air density, the more it weighs and the more oxygen it contains per the same given volume. How do you measure Manifold Air Density? The Banks iDash. Watch Gale explain.
Full Video Transcript
00:00 to most people power lasts 5 to 10 seconds and it’s over in my world guys pull long grades with heavy loads that requires an efficient intercooler that has massive cooling capacity and very little boost pressure loss our competition sells intercoolers based mainly on flowbench numbers and half-ass
00:21 short duration Dino sweeps the gold standard is full power long duration testing with the ability to measure the intercooler eff efficiency on the road a boost gauge can’t read that because it doesn’t know a damn thing about heat what will tell you about heat is manifold air density this is a welded
00:43 sealed cubic foot of air there’s no air going in there’s no air coming out we’ve heated it using this hot plate to duplicate a turbo building some heat in the intake manifold and making some boost so let’s intercool it Heats off keep your eyes on the ey Dash as the temp and boost drop all right the
01:01 manifold air density is still 73.2 lb per th000 cubic feet we had 3.3 lbs of boost when we started and the temp was 188° now the Boost is zero and the temp is 67° but the air density is still the same so the Boost lied to us you can increase boost and see no increase in
01:24 air density Therefore your boost gauge is bogus