I have a problem with my utec, When I go WOT below 4k the car bogs and shutters alot..but if i go WOT after 4k the car accelerates fine.

if I accelerate moderatly the car below 4k the car doesnt bogs down or anything on those lines..

Greedy TT,Map Sensor,Etc,490cc

Where should I look at?

 

Your logs? You really need the wideband data tied in there...

 

+1 log will give us a better idea what is causing the bog...

 

all this happened after I switched to 750cc and installed the map sensor...On the log data the bar that shows the load is on 0 all over the rev range...Any other inputs??

 

did you have it retuned after you went from the 490cc to the 750s because the scale factor is probally off.

 

Did you change the load indicator to 1? 0 = MAF 1 = MAP. If so, what are your min and max PSI values set at?