Forced Induction Superchargers | Turbochargers | Intercoolers

Map 2 bar efilive cos3

Thread Tools
 
Search this Thread
 
Old Jul 31, 2021 | 11:20 AM
  #1  
Gav's Avatar
Gav
Thread Starter
TECH Apprentice
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Jul 2012
Posts: 343
Likes: 13
From: UK
Default Map 2 bar efilive cos3

Hi,
hope someone could chip in..
just installed a 2 bar map sensor
got on the box Auto sensor standard parts PRC, OEM LS 2 bar
Think it was sfi...?
Anyway with old sensor key on Map was reading 101kpa.
so installed new and key on with 190 in settings as per COS3 tutorials showed 81kpa....
210 showed 88 kpa.
240 showed 99 kpa.
245=101kpa as old stock 1 bar sensor.

Sometimes do they need that much adjustment?
hoping to drive it tomorrow to start logging
regards
gavin
Reply
Old Jul 31, 2021 | 04:25 PM
  #2  
RonSSNova's Avatar
8 Second Club
10 Year Member
Photogenic
Photoriffic
Top Answer: 1
iTrader: (3)
 
Joined: Aug 2011
Posts: 4,732
Likes: 815
From: Portland, OR
Default

Sounds more like it’s a 2.5 bar map.
Reply
Old Jul 31, 2021 | 04:49 PM
  #3  
Gav's Avatar
Gav
Thread Starter
TECH Apprentice
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Jul 2012
Posts: 343
Likes: 13
From: UK
Default

Thanks Ron, thinking may have wrong one. Pain in **** to get ones in UK though so might just try it.
i have a pressure pump so could pump up to 0.5 bar and compare key on reading in scanner. Pissed though as never gonba exceed 10 psi ish...
regards
gav
Reply
Old Aug 1, 2021 | 04:38 AM
  #4  
Gav's Avatar
Gav
Thread Starter
TECH Apprentice
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Jul 2012
Posts: 343
Likes: 13
From: UK
Default

I have hooked up a vacuum pressure pump.
At -0.5 bar (half vacuum) the scanner reads around 50 kpa... Assume correct
At key on engine off no pump attached reads 101kpa... Assume correct
At 0.5 bar positive the V2 scanner only goes to 105kpa....Wrong?
In my previous logs looks like i am using SAE.MAP

I have the Flashscan set up for no laptop, so PIDS are in the scanner from using V8, see screenshot

Now, i read one post that the SAE.MAP without the engine running will only read up to 105KPA in efilive forum......? Is this true?
Have i got the correct pid in screenshot above as cant see any others....?
Want to get going on day off but problems problems....
Regards
gavin
Reply
Old Aug 1, 2021 | 09:18 AM
  #5  
GMCGreg's Avatar
TECH Enthusiast
5 Year Member
Liked
Loved
Community Favorite
 
Joined: Feb 2020
Posts: 749
Likes: 210
Default

1 don't use efi live but with hp tuners you have to set up the scanner to log 2 bar , if you log the 1 bar map you'll only get to 105 kpa even with 2 bar map installed. Not much help but I think you're gonna need to set up the scanner function
Reply
Old Aug 1, 2021 | 11:19 AM
  #6  
Gav's Avatar
Gav
Thread Starter
TECH Apprentice
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Jul 2012
Posts: 343
Likes: 13
From: UK
Default

Hi,
thanks but have scaled MAP.
i will slowly creep up on boost and see when the engines running if it records over 105kpa.
Had a smokey smell and fumes around oil feed inlet into turbo so have nipped the flange up and the an4 aluminium fitting up for now hoping smokey goes.....
regards
gav
Reply
Old Aug 1, 2021 | 12:04 PM
  #7  
RonSSNova's Avatar
8 Second Club
10 Year Member
Photogenic
Photoriffic
Top Answer: 1
iTrader: (3)
 
Joined: Aug 2011
Posts: 4,732
Likes: 815
From: Portland, OR
Default

With the hpt COS, you need to crank the engine to see map readings. It’s quite odd. So when I test mine I disconnect the injectors, and crank it while logging.
I use the fancy MytyVac that does pressure and vacuum. It’s quite accurate.

Not sure about EFI Live.

If you have a 3 bar COS, why not use the GM 3bar map from the LS9? Might need a pigtail, but it’s an excellent sensor.
Reply
Old Aug 1, 2021 | 01:11 PM
  #8  
Gav's Avatar
Gav
Thread Starter
TECH Apprentice
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Jul 2012
Posts: 343
Likes: 13
From: UK
Default

Thanks,
i suppose how many people actually put a pressure signal from a handpump or compressor to test a map... i am guessing people just scale them and run them and log it. I might be trying too hard lol.
regards
gav
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

 Brett Foote
story-1

Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

 Pouria Savadkouei
story-2

Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

 Verdad Gallardo
story-3

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-4

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-5

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-6

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-7

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-8

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-9

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
Old Aug 1, 2021 | 02:46 PM
  #9  
RonSSNova's Avatar
8 Second Club
10 Year Member
Photogenic
Photoriffic
Top Answer: 1
iTrader: (3)
 
Joined: Aug 2011
Posts: 4,732
Likes: 815
From: Portland, OR
Default

I built my own 3 bar sensor. Modified a stock one. Needed to verify the slip and offset I calculated.
Thats why I bought the tool.

It’s very handy for checking all the vac/boost systems on turbo setups.

Have fun
Reply
Old Aug 2, 2021 | 08:51 PM
  #10  
Z32_5.3's Avatar
TECH Regular
 
Joined: Jul 2019
Posts: 460
Likes: 44
Default

I have efi live but not sure the question. Think someone mentioned logging only specific map sensors?

I have to log the specific bar in options that car has AND delete the other bar on the list or it defaults to one. But this isn’t really EFI live specific.
Reply




All times are GMT -5. The time now is 09:06 AM.

story-0
6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

Don't get dad new socks or a grill brush this year.

By Brett Foote | 2026-06-09 14:55:56


VIEW MORE
story-1
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-2
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-3
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-4
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-5
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-6
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-7
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-8
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-9
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE