I bought the car used with most of the mods already done to it. I didn't talk to the previous owner, so I'm not really sure what all was done to it. I know that it has a K&N cone filter, 3" exhaust from the downpipe back, and a racing beat FCD. I've been driving it since August and have regularly seen 10psi of boost and it has creeped up to 13psi while hauling some serious *** on the highway (140 sustained) Anyway, my A/F gauge has never shown a lean condition during these levels of boost, so I always assumed I had a higher flowing fuel pump and probably bigger injectors. Well yesterday I finally checked out the pump and found that it is a Mazda pump!
If this is the factory pump, shouldn't my engine have been long gone. Until I figure out what's up and put in a higher flowing pump, I'm going to back off, but I don't understand how it has lasted this long. It's got 71K miles with 10K on the new engine. I've had it since 0 miles on the engine. Since my sig isn't showing, the car is a '87 TII. I've listed all the mods I know of above, except the greddy blow-off valve.
Anyone have a theory?

 

Don't look a gift horse in the mouth...

 

higher flowing mazda pump from a different car? no idea what though.

maybe you can contact the original owner and ask him about the car. i did that for a few things on my car after buying it.

 

Check the part number, could be a fd or cosmo pump.

 

Where can I reference the number when I get it to find out what kinda pump it is?

 

google seems to be my place to check part numbers.

 

That's funny. Google probably also has the answer to which apex seal is best!

 

Despite what everyone says, the 13BT is a very robust engine that takes a lot of abuse.

 

What's the average life span of a 13BT driven daily under normal wear and tear?

 

everyone says 100-120. but i dunno for shure yet becasue im at 90 and running stong.

 

A Turboii running 10psi with a stock fuel pump and stock injectors, still runs RICH. It'll run in the mid 10afr and the low , low, 11afr.

 

13BT 145K Original Miles. Basic Mods: Exhaust/Intake. Still Runs Strong. Turbo is tight.