embs2001

I just installed a LSA Blower in my truck and I still have the original computer.

I'm waiting on a tune from Blackbear but I probably wont hear from him until Monday at the soonest.
Im worried he is going to tell my my map sensor wont work with my computer.

I bought a ZL1 lid off Ebay and it came with the 3 bar map.

I was looking at a couple of forms while I was splicing the LSA pig tail to my factory harness and I saw a few people mention the 3 bar map may not work with the earlier year computers.

Should I go ahead and hunt down a different map sensor over the weekend so I am ready when Justin gets back to me?

Thanks ahead for any help! Here is a picture of the blower installed.

ezdaar

iTrader: (1)

We demand a full write up,to include.

Full cost break down, to the penny.
All parts,
Part numbers.
Any and all problems,
how you extended the fuel line.
What your doing with the intake tube.
How many beers did it take.
what colorful language was used.
And finally what color was the sky when you started and finished.



Im becoming more and more jealous of these LSA blower installs.
Looks awesome.

embs2001

I am not using the LSA fuel rail, this one is custom and stock fuel line stays in stock location.
Ill have to take a more recent picture to show you the intake tube. Its basically just a cheap ebay 135 Degree silicone U shaped coupler off the throttle body to a 18 inch long 4 inch aluminum tube that connects to the the stock MAF with a 4inch to 3.75 inch coupler. MAF is in stock location at airbox.
I'm going to run electric fans.

embs2001

The map sensor part number is 12592525 (LS9). I'm reading that because you cannot enter negative values in the older computers this map will not work. I also read you can still use it.

arthursc2

iTrader: (5)

You can use that 3 bar if you flash your OS to one that had 3 bar capability.

The ECU is capable of doing it, your OS is not. Getting the OS from a later model C5 is the easiest way to go about it.

Cheapest way to go about it is to tap the hole the 3 bar is sitting in, thread in a barb. From that barb, run a short line over to a 2 bar sensor

GM 2bar Map Sensor Turbo Boost with Plug Wires 12247571 16009886 16040609 | eBay

Use some zip ties to help hold the line on, the barb on the MAP is pretty small for a clamp. I think I used 1/4" line.

The truck OS can read 2 bar just fine, and unless you want to make more than 14psi at sea level, 2 bar will get you where you want to be.

Hope that helps

MileHighSierra

Did you swap to rect. port heads or are these still cathedral with adapters?

embs2001

Thanks for the input guys, I think Justin is going to try and update my OS and use the 3bar. Its good to know about tapping that whole to use a 2 bar map, I didn't think of that.

I used adaptor plates on cathedral heads.

shootermwc

Custom fuel, like some homemade special? I'm curious, as I am about to pull the trigger on my LS9 fuel rail.

arthursc2

iTrader: (5)

How did the OS reflash go?

Wolftrk99

iTrader: (5)

Man the more lsa setups i see the more i want one!!!! Recent pics??