Under the drivers seat
The B2600i does not have an EGR valve, because the truck is fuel injected the ECU monitors driving conditions and retards ignition timing to lower NOx emissions. Kyrasis6 Mazdatruckin.com
3,6 litters
Mazdatruckin.com has diagrams of the Mazda Pickup Truck frames on their tech website. See the attached link.
the hold light on on my mazda truck b 2600 stays on or flashing and it shut the engine off
B2600 has a carburetor system and B2600i has an injection system.
121 hp
The SE-5 package has a limited slip differential but it doesn't fully lock.
.044
Very possible. That info could be found in the owners manual also.
on the firewall passenger side
yes you can pretty much turbocharge anything.
I Called the Mazda dealer today and talked with the Mazda Tech and asked him the location of the EGR valve on the 1992 Mazda b2600i. According to the tech only the California models have an EGR valve, I would think that any state with similar laws about vehicle emmisions would require the egr valve also. My truck is from Montana and it doesn't have an egr valve which explaines why I havent been able to find it.