jonathan_ed3

iTrader: (4)

My engine didn't come with a MAF, so I'm looking at buying one. While searching I came across 5 wire vs 3 wire. 5 wire seems the way to go.

What vehicles should I be looking in for the 5 wire MAF? Is it true that these have a built in IAT?

Are the 5 wire MAF's 3.5" or 4"?

Are all of them the same? Truck, car etc?

If it matters, I need one for a '98 LS1.

For the "SEARCH" guys: I tried searching but the search feature on any VBulletin forum is very rudimentary and doesn't necessarily return relevant results.

Rubidon

iTrader: (1)

Does your wire harness support the three wire or the five wire? My harness came from a '02 silverado and it has a five wire hook up,as for the size I am in the dark also. The five wire has a built in IAT.

My TB is 4"

jonathan_ed3

iTrader: (4)

My wire harness is for the 3 wire MAF. But I can make or purchase a harness to include the IAT wires into it which makes it the 5 wire unit. I like the idea of the all-in-one MAF unit to simplify my intake routing.

poconojoe

iTrader: (43)

The LS based truck MAF are all 5 wire, a lot of times you can find new ones on ebay for under $50

Search for part # 25168491

jonathan_ed3

iTrader: (4)

Thanks for the help.

Do you know if that part number will work fine on a mostly stock '98 LS1? I assume so, but I'm pretty new to these LS engines so just want to make sure.

I have to buy one regardless, so would be nice if I could use the one with a built in IAT.

poconojoe

iTrader: (43)

Most likely you'll have to change the tables in the PCM for it, since I think its bigger then the stock 98 MAF