hey everyone
good news got he cat off and runs alot better boost went up to 4 1/2 rather than 2 with it on man does it pull
well i have been looking at some things with the map sensor cause thats what was triggering the check engine light and found a site concerning it as well. http://www.cse.uconn.edu/~yelevich/turbo/turbo.html if you follow the link you'll see him install a check valve on the map sensor, which allows for vacuum but not boost (which i found that MAP sensors dont like) to get to the sensor allowing everything to work properly. thought i would run this past everyone see if any one had heard of this before or if anyone else has a problem with this check engine light as i do
red_sleeper

 

try the synaps ( i forget how to spell -its sounds like snaps) ive had it on my si for ever and the light never comes on.
about $75-$100 and it comes with extra stuff to clean it. goes between map and intake
good luck
turbo93si

 

where did you get it? is it pretty much just a block or spacer that bolts between the intake and the sensor and then like a check valve coming out of it to vent the boost? or is it in line with the vacuum hose? also on my 99 i cant find a hose that goes to it so does its take the reading right from the intake?
thanks
red_sleeper

 

its called a missing link. check out ebay, they always have a few. i know Blox makes a similar thing, and they are a little cheaper than synapse.

 

local shop gets them. goes between senser and manifold. doesnt let map see boost. no hoses senser turns vacuum into voltage then it goes to ecu.

 

well i went to ebay and got one cause its exactly what my problem is, there is no doubt about it. now im just waiting on the MBC and then the MAP block and then be kickin some tail!!!
WWOOHHHOOO