View Full Version : Lambda map
NASTASE
7th May, 2012, 04:40 PM
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
7th May, 2012, 05:01 PM
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
7th May, 2012, 06:17 PM
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
7th May, 2012, 10:30 PM
Yes you will gain power.
spawns3
7th May, 2012, 11:38 PM
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
8th May, 2012, 05:38 AM
Inlet modification is already done.Thanks for answer.I will try the AFR modification for 12.6/1 and report.
donesko
9th May, 2012, 08:26 AM
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
9th May, 2012, 09:05 AM
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
10th May, 2012, 05:58 AM
I do not have a wideband tool, but i will try with BMW -INPA,or GT1 to see the voltage given by Lambda.
NASTASE
10th May, 2012, 01:57 PM
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?
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