Poor throttle response balky

[Urban7120]

2007 Lexus SC430 123000 miles. Has poor / sluggish throttle response at times will not accelerate from 15 to 60. Recently replaced water pump, timing belt, and 3 rear coil packs. And spark plugs

[Bykfixer]

Try putting a bottle of system cleaner like BG or Sea Foam as it may be as simple as the ethanol residue has built up in the fuel induction system. 

[Cavecat]

04 sc430 replaced MAF sensor $19.95 on eBay Toyota part. Running fine since.

[RB48]

Order the throttle controller from sc430mod.com.  Plug and play install and the sc now runs like a sports car.  About $100.