Lambda map

[NASTASE]

Hello all DK members,

I changed on my 2005 Mini Cooper 115HP injection map ,spark advance map and rev. limiter.Must to change also the Lambda map?,need to change the AFR from 14,7/1 to12,5/1 to increase the power?
I can not try it on Dyno(workshop with Dyno is too far ),advised me please,any help is welcome.My car have 2 Lambda ,one before Cat and second after Cat.

[spawns3]

Hi mate , The stock AFR is 14.7/1 ? or u have change it already ?
Check this http://en.wikipedia.org/wiki/Air%E2%80%93fuel_ratio

[NASTASE]

I know that,my question: is a gaine of power if i made AFR 12,6/1,or
just smoke on exhaust?

[J_amb_o]

Yes you will gain power.

[spawns3]

I know that,my question: is a gaine of power if i made AFR 12,6/1,or
just smoke on exhaust?

Try and report : ) but yes i gain some power with that . but for bigger gains change the inlet .

[NASTASE]

Inlet modification is already done.Thanks for answer.I will try the AFR modification for 12.6/1 and report.

[donesko]

I know that,my question: is a gaine of power if i made AFR 12,6/1,or
just smoke on exhaust?

What about disel engines, is AFR principle same for disel?

[Stanton]

You cannot rely on software figures to assume you are achieving a given AFR.

At least fit a wideband and do some data-logging.

[NASTASE]

I do not have a wideband tool, but i will try with BMW -INPA,or GT1 to see the voltage given by Lambda.

[NASTASE]

I ordered that:

Sealey (http://www.sealey.co.uk/PLPageBuilder.asp?x=0&y=0&productdescription=VS925&pageindex=1&gotonode=DoProductSearch&method=mProductSearch&IndividualTypeID=&category=0&requiredresults=16)

Someone has an opinion please?