i converted my car from tbi to tpi but
my speedo isnt working i looked in the serivce manual it shows that tbi uses a vss buffer box and tpi dosnt

i have found no guide that says how to do this or even a topic on this

has anyone else had this problem?

also im haveing trouble with getting the fan to work harness was for dual fans but i only have the single ive swapped back and forth with the connectors with the ac on but the fan dosnt kick on
also fan dosnt kick when the engine is to hot

 

well i figured out the speedo problem had to cut and splice 3 wires that went to the vss buffer and connect them to the ecm instead

i really wish they would have said something about that in the tech artical

im still haveing problems with the cooling fan its got a new fan switch new cts but still no fan everything is hooked up this is the only issue im stumped with

btw 140 never felt so good

 

this can be deleted i figured it all out real pain in the a$$ when you use a firebird harness in a camaro lol

 

No need to delete, as I'm sure others will come across the same problem, and will be greatful that you took the time to post....