awd-rwd racer

iTrader: (16)

i plan on running only 5-6 psi. do i need a 2 bar map sensor or is it ok to stay with the stocker from my 01 ls1 with my ls6 manifold...

if i have to change. does anyone know the 2bar i need? im going to be running speed density btw

sujomatt

iTrader: (7)

I am running stock with SD at 10psi lol

awd-rwd racer

iTrader: (16)

everything was able to be tuned ok? why does everyone say you need to run a 2bar then?

sujomatt

iTrader: (7)

Honestly I am not sure - I am assuming there are some limitations. But as far as I can tell, I have not run into them.

speedcrazy2

iTrader: (1)

its hard to explain(without u seeing the maps in a tuner program) but basically any time you are under boost all of your fueling is coming from one line in your table with the stock map

so you cant fine tune every point throughout boost

with the 2bar you can map out every single point and it provides a much more accurate tune

a map sensor is only like 40 bucks so to me it is well worth it but i guess you do need a custom operating system also which if you are paying a tuner anyway it shouldnt be an issue

crf538

iTrader: (3)

running speed density with a 1 bar seems like a recipe for disaster for sure, im assuming you just worked the last row of VE till your afr came in line?

There are a fair amount of blower cars running mass air with a 1 bar and just using the MAF for boost tuning , Ive dont a few procharger cars like this, but only 6 pound kits and i wouldnt do this with a turbo, only running 5-6 psi prolly wont last long either if your like the rest of us.

In my opinion its best to just do it right and go 2 bar sd straight off, the sensor you need is off a cobalt ss if i remeber right, its pretty to find the p/n on here

sujomatt

iTrader: (7)

the question then arises - where to get one??

speedcrazy2

iTrader: (1)

got mine from the local auto parts store do a search here and you will find the part number

sujomatt

iTrader: (7)

I don't mean to threadjack - but I have a 3-bar already .. can I use that??

speedcrazy2

iTrader: (1)

i dont think you can because of the ecm,not positive but i think only 2001 and 2002 models are capable of 3-bar

i know that a 98 cant run 3-bar but i believe it was 98-00 that cant,but im also not sure if you can use it but your table will still only read 2-bar or if the sensor wont work right alltogether(good question)but i dont think it will report right unless you ecm is capable of 3-bar


its crazy how you forget little things like that when you dont ever think of them,one of these guys that deal with it everyday will surely chime in here soon

sparkwirez06

iTrader: (18)

http://www.turbols6.com/gallery/TYPHOON-LSX-TURBO/afp here's the 2 bar, get it at gm parts counter.

CarsandWomen

iTrader: (19)

cobalt ss MAP, Delphi PN 09350899

daws222000

iTrader: (6)

I dont mean to jack your thread but i have a fast 3 bar map can i use it on a 97 corvette? How much boost can you run with a 2 bar map, i want to run about 18psi through a turbo? I have a newer ecu but it has to be pinned what a pita, I hope i dont have to do that.

JoshuaGrooms83

iTrader: (2)

i have a digup question on this, i recently got a GM 2 bar MAP sensor and was wondering if i can run the car without tuning the car for the 2 bar map, until i get it tuned of course? i have a 98 TA with stock PCM, tuned by frost already for current mods.

got-a-ls1

iTrader: (12)

nope you need a tune to run it

JoshuaGrooms83

iTrader: (2)

damn, so in order to get ti tot he shop, leave in the stock snesor, and then switch it out when i get there lol? its literally a 5 minute drive down the road from my house. thats gonna suck. getting that damn sensor is such a PITA