Hi guys, I've just installed a wide band sensor, and I'm guessing what should the AFR be with OEM software?
I want to be sure everything is correct before getting an alpha n tune or something like that.
Engine is stock, just custom exhaust setup and air intake.
Thanks!
I made a little test drive video:
http://youtu.be/L1f9WLTmvTc
Last edited by ulmi; 02-13-2016 at 06:43 AM.
No idea exactly what BMW targeted as stock. Trying to figure that out myself.
I'd imagine your WBO2 would read somewhere in the mid to high 14's (and then the ECU/DME would compensate from there (if it has these features: altitude, common country fuel additives at time of production, etc.)
https://en.wikipedia.org/wiki/Air%E2%80%93fuel_ratio
What type of fuel are you running? I have never checked on an e36 however I used to have an e30 running a WBO2 and I saw a huge difference between regular pump, premium pump and non-pump E0 (91 octane, 0% ethanol).
I'm no expert tuner, but I have seen quoted for full throttle its is around 13:1 minimum, but highly dependent on the engine.
Excellent sounding S54. That makes me want to hunt for one for a swap.
-Abel
- E36 328is ~210-220whp: Lots of Mods.
- 2000 Z3: Many Mods.
- 2003 VW Jetta TDI Manual 47-50mpg
- 1999 S52 Estoril M Coupe
- 2014 328d Wagon, self-tuned, 270hp/430ft-lbs
- 2019 M2 Competition, self-tuned, 504whp
- 2016 Mini Cooper S
WOT anywhere from 12.5-13.5 is pretty safe and normal. some run a bit leaner like 14:1 at low rpm and richen up to 12.5:1 or there abouts and some engines run richer like 12:1 at the topend to keep the combustion chamber a bit cooler but it gives up power when youre this rich.
Last edited by digger; 02-13-2016 at 04:02 AM.
Yes the S54 sounds good
I get a little over 14all the time at WOT, it goes to ~12 just before the rev limiter.
I run only with 98 RON fuel (wich equals to 93-94 of US octane).
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