anyone using 2bar or 3bar map sensor
Thread Starter
Instructor
Joined: Jun 2003
Posts: 100
Likes: 0
From: broken arrow ok
anyone using 2bar or 3bar map sensor
Anyone here using a 2bar or 3bar map sensor with thier supercharger or turbocharger. I was wanting to do a little more precise tuning with the supercharger and thought someone might be running a custom 2bar or 3bar chip.
Burning Brakes
Joined: Dec 2002
Posts: 1,088
Likes: 0
From: Lakeland fl
Re: anyone using 2bar or 3bar map sensor (new'92)
You cant just plug in a 2 or 3 bar MAP. You would either need a new ECM, or a very custom program which I am not sure exists yet. There are people working on a 2 bar map conversion for the 730 ECM right now at TGO.
Burning Brakes
Joined: Apr 2002
Posts: 1,126
Likes: 0
From: Cleveland OH
Re: anyone using 2bar or 3bar map sensor (new'92)
Anyone here using a 2bar or 3bar map sensor with thier supercharger or turbocharger. I was wanting to do a little more precise tuning with the supercharger and thought someone might be running a custom 2bar or 3bar chip.
How much difference would the 2 bar sensor make if you're not going to run more than 14.7PSI of boost (or 1 bar). How does it become a more precise tuning tool?
Ron
Melting Slicks
Joined: Sep 2000
Posts: 3,150
Likes: 1
From: Carlsbad, CA CA
Re: anyone using 2bar or 3bar map sensor (RonRed89)
Anyone here using a 2bar or 3bar map sensor with thier supercharger or turbocharger. I was wanting to do a little more precise tuning with the supercharger and thought someone might be running a custom 2bar or 3bar chip.
I believe that you can swap in the computer from a Cyclone or Typhoon which came standard with a 2bar MAP sensor, or any of the aftermarket ECUs (FAST, Accel, Electromotive) will work witha 2 or 3 bar MAP sensor.
How much difference would the 2 bar sensor make if you're not going to run more than 14.7PSI of boost (or 1 bar). How does it become a more precise tuning tool?
Ron
I believe that you can swap in the computer from a Cyclone or Typhoon which came standard with a 2bar MAP sensor, or any of the aftermarket ECUs (FAST, Accel, Electromotive) will work witha 2 or 3 bar MAP sensor.
How much difference would the 2 bar sensor make if you're not going to run more than 14.7PSI of boost (or 1 bar). How does it become a more precise tuning tool?
Ron
ARe you saying it is unnessasary to run a 2 bar map sensor if you are not running high boost?
Do you think I could benefit from it?
Paul
Burning Brakes
Joined: Apr 2002
Posts: 1,126
Likes: 0
From: Cleveland OH
Re: anyone using 2bar or 3bar map sensor (zelement)
ARe you saying it is unnessasary to run a 2 bar map sensor if you are not running high boost?
Do you think I could benefit from it?
Do you think I could benefit from it?
Unless you're running 14.7PSI or more, the mapping provided by a 1 Bar sensor (0-100kPa) should be sufficient. I'll defer to some of the people here actually running high boosted cars, but think that they will also agree.
Ron
Safety Car
Joined: Dec 1999
Posts: 4,691
Likes: 1
From: Framingham MA
Re: anyone using 2bar or 3bar map sensor (RonRed89)
I believe that you can swap in the computer from a Cyclone or Typhoon which came standard with a 2bar MAP sensor, or any of the aftermarket ECUs (FAST, Accel, Electromotive) will work witha 2 or 3 bar MAP sensor.
Their are 3 bar calibrations for 749 Syclone/Typhoon ECM The issue with swapping in a different map sensor into a 1 bar code is the map sensor is the essential load input. In my 749 I have 12 different table than would be need to be rescaled (reference either MAP vs Load). These table include the big ones, Timing and fueling. It may affect other calculations, ie you need to go though the the ECM code to see what could be affected by changing the map.
[Modified by dgoodhue, 9:43 PM 4/29/2004]
Melting Slicks
Joined: Oct 2000
Posts: 2,158
Likes: 9
From: N.E. WA
Re: anyone using 2bar or 3bar map sensor (RonRed89)
How much difference would the 2 bar sensor make if you're not going to run more than 14.7PSI of boost (or 1 bar). How does it become a more precise tuning tool?
Ron
Safety Car
Joined: Dec 1999
Posts: 4,691
Likes: 1
From: Framingham MA
Re: anyone using 2bar or 3bar map sensor (ANTI VENOM)
BTW techincally 1 bar is 14.5 psi (1 atmosphere is 14.7psi )
A 3 bar will read upto 29 Psi and 2 bar 14.5psi and 1 bar will not read any boost.
A 3 bar will read upto 29 Psi and 2 bar 14.5psi and 1 bar will not read any boost.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
Burning Brakes
Joined: Apr 2002
Posts: 1,126
Likes: 0
From: Cleveland OH
Re: anyone using 2bar or 3bar map sensor (ANTI VENOM)
It is my understanding that 14.7 pounds of boost is 1 bar above atmoshpere, but it would be 2 bar from 14.7" of vacuum. The 1 bar map sensor would be maxed out at any pressure over atmosphere, therefore you will need a 2 bar map to read up to 14.7 pounds of boost and a 3 bar to read up to approx. 28 pounds.
