bro..actualy im using the DESI ventury...not the original LANDI RANZO one with small gas gas esxape holes around it rim....so i have to open up gas too much to tune it without air blockage which ruins the mileage on CNG...that the reson i cant remove air blockage from air intake....
as far as my diagnosis is....the TPS need adjustment...it is not faulty...as i have checked it through SUZUKI OBD and also manualy using OHM meter...
while experimenting i have noticed that if i turn the TPS extreme to anti clockwise...and fix it over there...the engine goes into cycle at 2500 RPM....i mean at this TPS adjustment...if i rev the engine gently exactly at 2500 RPM it seems that the REV limiter starts working...nd it goes to 1500 and then comes back to 2500....but if i push it a lil more it can go on further....
need to get into serious technical stuff to tune it myself...