redboost10

if i were to switch my 1bar map sensor with a 3bar, would i have to get tuned again after changing them or will it stay the same? thank you.

asiangl2

when i had my 3 bar installed i had to get it tuned, but i have hondata. To my knowledge the three bar changes voltage reading from the map from 2.65 to 1.6 or so volts. What is your setup.....???

tegmech

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by asiangl2 &raquo;</TD></TR><TR><TD CLASS="quote">when i had my 3 bar installed i had to get it tuned, but i have hondata. To my knowledge the three bar changes voltage reading from the map from 2.65 to 1.6 or so volts. What is your setup.....??? </TD></TR></TABLE>

I am unsure to why you need to have it retuned again. Are you meaning that you have to just change to 3 bar (i know you have to do that), or are you having to retune fuel maps?

redboost10

right now its tuned and i have a gm 1bar map sensor on it. but i recently bought a gm 3bar map sensor and i was wondering if i could just install the 3bar and call it good or do i have like retune it once i switch to the 3bar?

TravSi

i would retune.....any changes you should re-tune because a cars "tune" changes day to day...depending on conditions, Its better safe than sorry....

redboost10

alright, thank you. i wasnt sure if it affects the previous tune or not

Cyphear

all you have to do is tell it you have a 3 bar and burn a new chip. The fuel maps will still be the same... with different boost scalars of course.

redboost10

ok, thanks man

kpt4321

Right. You can't just plug it in.

You need to rescale the maps in the ECU. You don't need to actually retune.