need transmission help
 

i just got my car back from getting a new lentech aode street terminator with a 10" torque converter that stalls at 2800 rpms. ok my question is it drives fine under normal driving but when i go from a dead stop and floor it the rpms just rev up and the car goes nowhere. when i manually put it in first gear it normally goes and stalls at 2800 rpms and goes just fine. ive heard that since its an electronic transmission the computer might have to adjust to it could this be right????????

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1995 gt convertible:
3.55 gears, underdrive pulleys, cobra intake , fenderwell cold air, 65mm throttle body, 75mm mass air meter, off-road h pipe, borla cat back, custom diablo chip, 155lph fuel pump lentech aode street terminator w/ 10" converter stalls at 2800 rpms, yokohama a520(drag radials) 275s

Since this is a powertrain question, I'm moving this topic to the Windsor Power Forum.

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Capri306, Moderator, The Mustang Works Online
1979 Mercury Capri, 5.0L -- C4 -- 2.73
1987 Mustang LX Notch