pdasterly

iTrader: (4)

talked to some people about my fuel systems and they recommend that I upgrade to a 2 bar map sensor, is this possible on a 98 z28, btw i have a ls6 intake manifold

jeremym

iTrader: (3)

I also would like to know this. Will a 3 bar work with 98 to? I am building a TT set up.

98Camarod

iTrader: (43)

If you put a 2 bar in, then you need a 2 bar operating software and only hp tuners offers that for the 98

pdasterly

iTrader: (4)

so im limited to 15 psi unless i upgrade to a 02 wire hareness amd computer

Jimmy P

iTrader: (177)

Yup, 98 PCM's are limited to 2 bar. You would have to change the PCM/wiring harness to use a 3 bar map sensor. Or you can get a stand alone computer.

TheBlurLS1

iTrader: (8)

You can go over 2-bar with the 2-bar setup, you'll just have to fudge the PE/etc up top, or the highest MAP cells, as it will stay in the highest cell row (210kpa or whatever). Not the best way to do it, but swapping the harness/pcm sucks. No way I'd swap the **** out to run 17-18psi.

SS2win

iTrader: (11)

You can do it without a 2bar OS. the map sensor will read half the voltage of the 1bar so you have to adjust all the tables that use MAP accordingly. The only thing weird about it is the table titles will read up to 105 kpa when in reality the 2 bar goes up to 200. you just have to adjust your thinking for that.

ls1290

iTrader: (20)

If you go that route, you might as well put the MAF back in as you will be in the same boat

ddnspider

iTrader: (26)

If you swap out the stock map for a 2 bar, will a scan tool/gauge now show up to 1 bar of boost?IE just using it for reference to compare vs an aftermarket gauge.

TheBlurLS1

iTrader: (8)

But but but but he MAF table would be maxxed out WAAAAAAAAAAAAAAAAAAAAAAAY before you hit the top of the 2-bar table. Plus if you turn the boost down to 12psi or so (for pump gas or something), you'll be golden.