when boosted check engine light comes on.!!!
 

i and my roomate installed a turbo on his car. he has a vafc and t3 turbo kit with 450cc, and msd kit. once car is boosted the check engine light comes on and car bogs out major. once we turn off the egnition and back on it's clears itself then continues with the same problem. can someone please help me out on this.

Re:when boosted check engine light comes on.!!!
 

does the cel stay on until you turn the ignition off? if so, why don't you try to get the code for us ;)

Re:when boosted check engine light comes on.!!!
 

no, the check engine lights turns off after the car is shut down.

Re:when boosted check engine light comes on.!!!
 

i wonder if you can jump the service wire while the car is running ???

Re:when boosted check engine light comes on.!!!
 

what happens if i unsrew the map sensor.

Re:when boosted check engine light comes on.!!!
 

Is the VAFC reading boost or vacuum, make sure it's set to 760mm Hg

Re:when boosted check engine light comes on.!!!
 

theres three choices on that of which you mentioned. two read 760mm hg to +1 and the other 760hg mm +2

Re:when boosted check engine light comes on.!!!
 

Maybe yours has different programming than mine, I got mine from a friends trip to hong kong.

the options I have are
760mm Hg
1kg/cm²
2kg/cm²

the first is what you want, that is vacuum, the second is 1bar and the third is 2bar. The VAFC is sending this value to your ECU, if your VAFC tells you how much boost you have, then it's telling your ECU that as well. Since the car is made to run N/A it freaks out and goes into a 'safety' mode.

try the two different ones that have the 760mm Hg, it should be the one farthest away from +2. Hope that solves your problem.

Re:when boosted check engine light comes on.!!!
 

You should still be able to pull the code. Try it and see what happens.


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Re:when boosted check engine light comes on.!!!
 

hey it would help if u told us if the car was obd 0 or not.. also id like to know what the code is.. doesnt it give you the flashes while the car is on, move the capet aside and look

Re:when boosted check engine light comes on.!!!
 

Figure out your code dude..

http://www.hondata.com/techecucodes.html

Re:when boosted check engine light comes on.!!!
 

isnt that because the map sensor is picking up boost....try some of them check valves....or get a "missing link"....you can get that on ebay....them check valves i heard looked funny but heh it works and is pretty cheap...you can get them at a fish supply store.

Re:when boosted check engine light comes on.!!!
 

Missing link/check valves wont work with an AFC.The missing link/check valvees drop/lose presure so that the map doesnt read it therefore keeping map voltage low.The AFC does the same so if you use both I think all would go to ----.

Re:when boosted check engine light comes on.!!!
 

what are the correction values on the afc. Also what are the initial settings??

pressure 06 06 /