60rwKW

The 1UZFE EGR Delete Kit is available for sale here.

gloverman

Well-Known Member
Here a bit of a problem job that came in recently. Early 1990s Mazda B2000 (or ford courier are the same). Tidy conversion. The owner had not long purchased the vehicle. It was mentioned the last owner spend around $22K building the vehicle , not sure what that includes but I would expect it to include paintjob and mags along with the conversion. Present owner got it for a good price but guessed it was down on power. He thought about 100rwkw. When I put it on the dyno it only layed down 60rwKW.
It is running a UZS141 crown motor , with a slip joint UZS131 crown auto and a Soarer UZZ30 ECU. Wiring was neat and tidy. Radiator hoses around the wrong way. It was a tidy build but just didnt make power.

After a bit of fault finding and daignoses I found the issue which was voltage to the wrong place at the wrong time. 14 hours and she made 124rwKW which I was happy with it being auto. There are somethings people just should do.

I wired a diagnostic plug , scanner helped but everything looked good. Compression tested , checked mixtures , checked camtiming , ignition timing , then out came the osilloscope and I started checking ECU voltages and patterns 1 by 1. Found nothing so had the vehicle running on the dyno and did the same tests until I found the stray voltage. Im not going to disclose what wire so please dont ask.

Cheers
 

Attachments

  • 3UZ. 129.jpg
    3UZ. 129.jpg
    193.8 KB · Views: 16
  • 3UZ. 128.jpg
    3UZ. 128.jpg
    197.5 KB · Views: 17
  • 3UZ. 127.jpg
    3UZ. 127.jpg
    190.4 KB · Views: 16
Wow... you doubled the power. Customer will be pleased!

Looks like the catalyst are removed along with the stock air cleaner to throttle body components. The second part is probably the missing 10hp or so from typical 175rwhp dynos so you got it back to normal.

I bet with the stock parts back on the thing would wake up even more.
Whats it running for exhaust?
 


Back
Top