I rebuilt my engine.
-Stock Primaries
-ID2000 Secondaries
-OEM FPD
-Supra Fuel Pump
-Fuel pump electrical power mod where you move the contact in the fuse block to get direct battery power.
-innovate wideband/boost controller combo gauge.
-PFC

Mixture always reads lean. I keep the car out of boost and it needs a tune. reading 13+. Often 15 when initially accelerating. Car drives reliably. I moved during this project and drove it from Texas to Minnesota in this condition.

Where would you start in investigating this issue? My PFC controller is broken. LCD screen died, but I have a laptop with FC_Edit.

How would I go about verifying the accuracy of my wide-band?

I am not using a fuel pressure regulator, could this be an issue?

Thanks




PS:
Post #32 for pump rewire info
https://www.rx7club.com/3rd-generati...-615964/page2/

 

What is your voltage at the fuel pump? The supra and most other pumps need 13V minimum to flow what they are rated. You really should run a dedicated relay for the fuel pump.

ID injectors are intended to run at 43.5 psi base pressure. You really need an aftermarket fuel pressure regulator.

Address the above issues and get a professional tune.

Also, if you are running an airpump it will through off the wideband readings. Unplug it temporarily to ensure you are getting a correct reading.

 

Okay, I'll get a FPR then. I'll have to wait until the weekend to check the voltage. I do not have an airpump. Thanks for the tips. I'll report what I find.

 

My primary fuel injectors are leaking badly. I replaced the Orings and they are still leaking. The leak filled up the cavity between the block and LIM in about 15 minutes. Bolts fixing the FI housing to the block are tight.

 

check if these two are there:

1) insulator grommets
https://www.atkinsrotary.com/store/9...A1-13-257.html

2) the plastic spacer where the two bolts go (spacer slides between engine block and rail)
EDIT: seems FFE has a replacement for this in case you wonder
http://fullfunctioneng.com/product/p...l-rail-spacer/

 

Yes, Sir, those are in place