LookeyLookey , the shiney shiney Underdrive pulley kit for the Z , was lazy to do the install hence sent it to the workshop since i have to put the denso iridium plugs in , the plenum spacers , and get an oil change and radiator flush.
Initial driving impression:
Throttle feel much more responsive. Surge of rpm climb is noticebly faster . Could probably shift the powerband of the car but with so many parts going in at one go I didn't know which one was contributing to this new found response , torque and hp.
That's why it's better to modify things one at a time but oh well i'm lazy hence i just plonk in everything.
Total performance? Still am waiting for the ECU to recalibrate the fuel maps and ignition maps for the new parts. A good 7 days there will be feedback on this product again.
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