Okay i’ve been all over this turbo business for a good two years and i finally got my DA turbo’d a couple months ago.
I took it out for a joyride and thought i should see how it pulls…
So i put it into third and floor and as im jerked back into my chair (i love boost :rockon: ) i watch my boost gauge climb up to 15 psi!!
As i quickly get off the throttle before any catastrophic problems occur i start wondering…HOW DID I HIT 15PSI ON A STOCK MAP SENSOR AND NOTHING HAPPENED?!
Okay so i thought of a couple different things that could happen…
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I burned my chip so that no CEL’s show up…but would that still allow the ecu to not throw any cells @ all?
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The car has an already upgraded MAP sensor (doubt that)
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Something is really F’d up here…
Can someone explain to me what exactly happens when you boost more than the stock MAP sensor can take? I know its supposed to throw the car into limp mode BUT it doesnt seem to have that side affect on my car…
WTF!? But 15lbs of boost was pretty nice i have to admit 
Anything is appreciated
i ran my car for a couple of months with a stock map sensor and i never had cel. i ran 12 psi without problems cause it was tuned for it. of course i changed the map sensor eventually and now it runs just like before.
oooo icic
yea i grabbed this tune off of xenocrons bin directory. it was tuned for 13 psi i believe…
yea i grabbed a tune for someone else’s car and used it on mine. I know i know but for now its gonna have to do till i can save up some funds for my own wideband o2 reader/sensor/gauge and moates emulator.
Thanks polska
that tune i wouldn’t use on your car unless the his tune was made using a stock map sensor also. the way it works is like this: the top psi it reads is what the tune is going to be for. So… lets say you have a stock map sensor and boost 12 psi. the stock map sensor reads only up to (i forget but lets say 10 for these purposes). the tune at 10psi is going to be the same for 10psi 11psi 12psi 13psi 14psi 15psi and so on. so… the tuner needs to make it rich enough at 10psi so that when you hit 12psi, it doesn’t go too lean.
so… if that bin file has a it tuned to 13psi, and he was using an aftermarket map sensor that could read 13psi, and you are using a stock map sensor that will only read up to 10psi, your engine will be running the 10psi tune while actually being at 13psi. which is not really good.
sorry if its confusing… lol
someone correct me if im wrong btw!
yea that tune was used by xenocron (chris H). Im not sure what he used but i’ll make sure to ask him about it. thanks again polska
you learn things everyday