We (Sixworks) design and manufacture tacho boosters for just about any car/engine configuration. Our boosters have been used sucessfully on many 4AGZE's to restore the factory tacho to full working order. As yet we do not have a website but would be happy to email you our information and tech data sheets.
Grant Blundell
SIXWORKS - innovative efi solutions
SORRY for hijacking BUT, grant wanna help me out ? can you send me some info or prices to fix my tacho ?? I put a 1ggte into an RA65 (prev. had the 24re injected engine). How to fix my speedo problem ? reads about 10 km'h less than it should be..