another one of my little questions..........

just changing to cossie management on my erst engine. got most bits but wondering.............. do i really need a 3 bar map sensor? would a 2 or 2.5 bar map sensor not be adequate??

i may be miles off but guessing they got summat to do with the boost you can run? i dont wana be using more than 20-22psi as i want the engine to last! its making 190 at the wheels at 16psi and its been reliable for 16-18mths (grabbing wood with everything i can!)

3 bars like 42psi aint it, thats y im wondering if i need it

thanks

adam

 

3 bar is 2 positive and 1 vacuum so only max of 29ish psi boost.

take it its batchy of PGAC silver one??

saw you giving it death at trax respect to you if it is as thought it was a quarter mile only show car!!!

 

u can use a 2bar for the sort of boost u want m8

 

what will 2 bar let me run and what bout 2.5 bar map sensors???? wat can i run wwith these

yeah i got a silver 106 from pgac, was prob bic u see at trax, i was being ill!!!

 

nah im postive it was your rwd one?! green cage in it??

if it wasnt bics has some oversteer!!!

was prob 2003 actually come to think of it???

 

simple maths mate...

3bar map sensor reads 3bar absolute (so 2bar boost, 30ish psi)
2bar map sensor reads 2bar absolute (so 1bar boost, 15ish psi)
2.5bar map sensor reads 2.5bar absolute (so 1.5bar bost, 22ish psi)

if you're intending to run 6psi boost it seems stupid to use a 3bar sensor...

...but if you're intending to run 26psi then it seems stupid to use a 2bar sensor (altho it can be done with trickery)

i'd say if you wanna run 22psi you may aswell run a 3bar, as you may strugle with having an overbost function on a 2.5bar. also 3bar chips are easier to get hold of off the shelf, and the sensors are easier to get hold of

 

3 bar chip off the shelf for a cvh??? dusty shelf thatll be

 

i have a brand new 2.5 bar map sensor

 

melv, quite a few places do off the shelf cossie managemtn/CVH chips nowadays.

 

You need a map sensor that reads at least 5psi higher than your peak boost figure. This is to enable you to set a boost limit in the software.

 

i was going to post this question but im going to run ofab efi management on a 2.1 zvh with approx 20 -22 psi. can i use a 3 bar map sensor with the usuall chip for the ofab?

 

skeld, you couldnt just use any old off the shelf chip, you'd need one specifically mapped for your spec... dunno if many places do em off the shelf either, so you'd probably need to get it done live.

i THINK that only ahmed@Grove and Kenny@MSD ( @ stu) can do this, so you better check before commiting yourself