history< 94 5.7 a4 3.73 1.6 r.r. last yr upped line pressure car shifted frim raced at track 7- 10 xs no problems. now friday put 52mm tb on, it shifts early and soft< @wot shift 6000 now 5200?>wants wrong

 

Your throttle position sensor voltage is probably low. This is common with many aftermarket throttle bodies. The TPS sensor tells the transmission when to shift in relation to throttle opening. It bolts to the side of your throttle body. You can check voltage with a scanner or a volt meter. You should have roughly .5V at idle, and approximately 4.5-5V at WOT.

Frank
CPT