EDIT: Resolved. The TPS and MAP Sensor plugs were swapped. Indications per my reply below.

Hello,

B18B1 block, Darton MID sleeves (84mm dia)
B16A2 head
Hondata coil on plug conversion
turbo with intercooler

I have datalogs to attach later, but my A/F with stock narrowband sensor on startup is sitting around 0.9. Basically blowing coal out the exhaust (not literally but not far off).

Closed loop narrowband set, target voltage 0.51 Volts. I have tried both with disable and leave O2 heater enabled and basically no effect. The O2 voltage on the display is 1.6V and lamda voltage 1.6. Injector duty 5-6 ms (grams 1000cc injectors).

Tried a new O2 sensor and about the same, maybe 0.02V off. I have no tuning experience. Is there a setting making this way too rich?

basetune and datalog: https://drive.google.com/drive/folde...uL?usp=sharing

Thanks!

 

Have you altered the fuel injector data from stock since you have Grams 1000's ? Also, what MAP sensor do you have ? If it isn't stock, you need to change that in the tune as well.

 

I'm not sure what my tuner did, but they emailed me a base tune based on my specs to get the car driving around, broken In before I take it to them for a dyno. Based on the attached tune I provided, it appears they do account for larger injectors because it says stock 240 and current 1000. Any other injector settings unsure.

The map sensor is a speedfactory 4 bar map sensor and the settings reflect that as well.

 

Do you have a wideband? A narrowband and close loop will likely do you no good since you aren't tuned at all yet.

​​​A lambda of .9 is stoich enough and not very rich - if you have a wideband reading as such.

Choosing new injector size is close but not perfect. You can add/subtract fuel using the overall fuel multiplier positive or negative values, roughly increments of 5-10 till the motor sounds/seems happy.

You cannot rely on the o2 for any compensation while untuned tho. Wideband or narrowband, doesn't matter, fuel maps need to be close and ignition timing needs to be right (whatever your motor is happy with via testing). Get a wideband in there asap

 

0.9 wasn't the lamda. It was seemingly the air fuel ratio (or as close at it could represent being 8:1 should be the lowest a sensor can read). The only reason the car ran probably was because I converted it to coil on plug and they put out 5 amps per plug instead of 2.5 so more power. I don't think you'd believe how rich it was unless you saw in person, I took the exhaust apart and it's coated in soot and gas. Blowing coal. I was going to get it towed so the shop could adjust it before I took it on the road for break in.
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i figured it out though and it was a stupid mistake. This time the answer was hiding in the datalog/indications. Issue was the TPS and map sensor wires were swapped. With the engine off the map was reading 20" hg and on it read 25" hg. These readings alone didn't throw red flags because I didn't know " hg or what 1 ATM is as inches hg. 10-20 is typical idle vacuum, and I didn't realize "hg goes down when vacuum increases. So going from 20 to 25 wouldn't make sense for an idle. Then I wondered if tps was reading right so I applied throttle with the ECU on and car off and the MAP pressure jumped to 45" and I realized the TPS never changed from 6%. Swapped them and now it should be fine.

Wideband did not arrive yet. Narrow band should be fine for idle which surprised me when it was incorrectly reading 0.8-0.9 for air to fuel (not stoich, a/f instead of 8-14.)

But I was simply trying to get it on the road for break in, not even run it hard, and the base tune being rich should compensate fine for a break in. The idle wouldn't have even been enough Now my wideband arrived so I should be all set installing that to get it to the alignment shop then put miles on it before the tuner.

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PLEASE DELETE THREAD.