Electronic throttle control problem
Well...I attempted to post this problem under General Discussion, with no success...Let' s try here in Tech. My friend just installed a 454 LS7 based stroker small block in his 2004 GTO. The rear wheel dyno indicates 562 peak rear wheel H.P. and over 500 ft/lbs torque thru a broad range of RPM. His car is an auto tranny car with 3600 RPM stall converter.
Here' s the problem....These cars have an electronic signal from the accelerator pedal which controls throttle position( I am old school and am familiar with mechanical linkages ) so this is new to me. With this motor, there is a 'Dead Zone' which lasts about 0.4 seconds from the time you mash the throttle pedal to the floor until the signal is recognized at the plenum. This is not a stumble or any type of engine hesitation. I just don't think the signal is being transmitted immediately. If you load the converter and power brake, this problem is non-existent.
Does the computer have some type of safeguard which can be bypassed to allow immediate WOT under any and all driving conditions or is there some other explanation for this delay. Thanks for any and all assistance. David