Turbo Pressure Gauge MAP/EMAP
Thread Starter
TECH Enthusiast
Joined: Aug 2021
Posts: 507
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Turbo Pressure Gauge MAP/EMAP Hi ALL, the most perfect Turbo Boost gauge I owed was originally fitted to a B-24 Bomber, WW-II.
I painted one of the TWO pointers, one on top of the other, Red and the other Blue.
The Red pointer was used to measure EMAP and the Blue to measure MAP.
Lance
I painted one of the TWO pointers, one on top of the other, Red and the other Blue.
The Red pointer was used to measure EMAP and the Blue to measure MAP.
Lance
radio active version
Thread Starter
TECH Enthusiast
Joined: Aug 2021
Posts: 507
Likes: 190
Delta/Pressure at Crossover Hi ALL, I hoped that this thread would into information about D/P.
When the Turbo engine is in "crossover" it will make great power with little chance of engine damage.
What is YOUR record amount?
When the Turbo engine is in "crossover" it will make great power with little chance of engine damage.
What is YOUR record amount?
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Staging Lane
Joined: Jun 2015
Posts: 96
Likes: 3
From: Melbourne, Australia
Yeah you see it at pikes peak as it accounts for the changes in altitude as they run up the hill. It actually accounts for many things without having other tables added in like baro correction etc.
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Verdad Gallardo Staging Lane
Joined: Jun 2015
Posts: 96
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From: Melbourne, Australia
No personal experience, seen a number of race cars make more boost than drive though. Often times they will quote the peak difference which is at mid-rpm, as the revs rise it will normally reverse though, or the gap will close up to almost nothing. You actually do get to see some meaningful testing of this in the diesel world.
TECH Fanatic
Joined: Jul 2022
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From: Alaska
Seems like a useful piece of data.
What would you expect the eMAP RATIO to do as boost activated cut-out OPENED ?
Say your 'test' engine/compressor combo is limited at 12 PSI manifold through 2.75" single pipe and stock factory muffler, than introduce a Y-pipe, and 3" cutout begins open 6PSI, full open by 9PSI
How does shape of eMAP graph change ? steeper or FLATTER ?
What would you expect the eMAP RATIO to do as boost activated cut-out OPENED ?
Say your 'test' engine/compressor combo is limited at 12 PSI manifold through 2.75" single pipe and stock factory muffler, than introduce a Y-pipe, and 3" cutout begins open 6PSI, full open by 9PSI
How does shape of eMAP graph change ? steeper or FLATTER ?