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That makes perfect sense. Let's give that a try. Thank you!

Hello Helpful type people,

I had posted earlier about a problem with the MAP sensor not reading the same as the mechanical boost gauge.

I have tested the MAP sensor with shop air while...

Thanks. I know it's pig rich, but I thought because it's in open loop under full throttle, it wouldn't matter.

About half way down you see the 3 bar absolute manifold pressure? I will disable...

Hello,

Have an 04 Silverado 2500
LQ4
SS2
Deka 80's
3 Bar
GT45

My boost gauge has always read more than my MAP, (but Sunpro Ebay special doesn't exactly mean accurate). I had the EFI...

Was getting about 105kpa with key off. low reading under boost, high reading under vacuum.

Yes the clip on style. I have given up finding one that actually works. Going to pipe the good sensor in.

Not to be a wet blanket, but I just had to replace that sensor because it does not read accurately. Apparently the only ticket is the GM 3 bar from the ZL1

OK you got me for a sensor and harness adapter.

These look correct?

linear 312.50
offset -11.25

See if I can smash this thing on a truck manifold somehow.
Thanks

if I were to replace this 3 bar with a 2.5 bar ZL1 sensor 12592525 would I have to do anything besides change the offsets?

Thanks Frost.

Huh, I thought I was getting a tested and true unit because I didn't want to run into this shit. I thought EFI source was reputable.

this one

https://www.efisource.com/wp/shop/ls1-truck-style-3-bar-map-sensor/

I sorta had the same thoughts, but I bought this from EFI source, the truck 3 bar map.

Hello! First time post here...

2500hd 2wd
6.0
Sloppy stage 2
Gt45 (Shut up)
80lb Deka
EFI source 3 bar Truck sensor

It starts, idles, and runs well, but I am concerned about going harder...

Any other insight on this? My truck runs perfectly, but my gauge is seeing about 11psi boost, but my MAP is seeing about 6 ish (140kpa)

My idle is about 70kpa also with a Sloppy stage 2

96331