Here goes… the mystery spacer and 84.5MM throttle body.

Rich B.

New Member
Joined
Nov 4, 2021
Messages
19
Location
Minot, ME 04258
Put on the 84.5MM Accufab TB several years back and it has been flawless. The parameters of the factory programs are such that fuel delivery is broad enough and the extra air intake isn’t a issue. Understand with the 90MM, too much air and mixture is way too lean. After market tune required for fuel enrichment with those. To sum up as others state, I would put it as if going up a hill say (normal drive) just depress pedal somewhat in 6th gear. Picks up like automatic transmission does.

The velocity spacer- some Bosses have, some not. No rhyme or reason and mine never had one. Bolts up after the TB and can be purchased to add. Can’t be used with TB upgrade, TB is too far forward (hits radiator) and not required. I’ve never seen the explanation for this other than factory screwups either way. No one seems to know? DFCFAE2A-171E-4113-A7D6-813E449C77AA.jpeg
 

Users who are viewing this thread



Top