what a/f ratio are you at at 49psi

 

it idles at 14.7 it drops to 13 to 12.5 at wot. sumtimes even goes to 11.4 at wot. maybe thats the 1to 1 ratio rising rate,but feels slugish a bit. any ideas sumtimes idles at 13.5. i got data logs for my plx ill gladly put them as a atachment for you to view with the plx logger program. it show map,iat,tps,afr. acel g's. tomarow morning im guna experiment and try it with and with out vac line and with and with vac line both set at 49 psi and log it with the logger and compare any ideas wat go afr to tune my idle? any ideas how to experment with the presure?

 

ok i got it right now at 44 psi at idle and 53 when its at wot. i got excellent top end but bottom little slugish.at wot its 11.4 to 11.7 thats rich. what should i tune WOT at?>

 

the problem your runing into is the computer is seeing that your pulling the fuel and is dumping fuel... in open loop... in closed loop or idel your car will pretty much allways be stotch the o2 sensor will adjust the fuel so all you should have to figure out is how to get the a/f at a good level when in open loop witch I belive kicks in around 2500 rpm... but dont quote me... i know that it kicks in once you start laying your foot down and get past a certain rpm...

 

well when i reduce presure the idle gets leaner but gets rich once the presure rises. i have 2 data logs of b4 fpr and after with my setingsim guna attach 4 files 2 files for one log you open the log with plg at the end in the data 2D logger heresa the download for the logger viewer
http://www.plxdevices.com/PLXSoftware/PLXLoggerV2.2.zip click that link install it and view my data. check and comprare the wideband data and rpm. ok it wont let me put files on here that isnt a picture so 95 06 PM me with a email address that i can send u the data logs

 

Bad link?

 

no try this then click on the download for the logger i emailed u the data that u open up in the logger

http://www.plxdevices.com/PLXLoggerSoftware.htm

 

from looking at the data i lost .7 tenths of a second in first gear winding it out i measured from 3000 rpms to 6200 on both logs and between that range of rpm the one with the fpr was 4.7 seconds and with out was 4 flat. and the afr differnce at each point where 12.50 and the other 12.40 so i gota tune it so im lower then 4 seconds then ill be better i ges. that sound right??

 

tune to your A/F ratio not your fuel mileage... Performance comes at a cost... normally the cost is fuel consumtion.

 

where did i say i was tuning fuel miliage? i never said nothing about that i just saying the time it took to go thur the gear with and with out the fpr is differnt by 7tnths of a second i am tuning for afr and performance by making the time shorter with the 1st gear the car would be going faster vs long time more e.t. then less. so lets say 1st geat it takes me 4.7 seconds to go thur the hole gear and 2nd was 4 seconds and and like 3 senods of 3rd in a quater mile so the total e.t. is 11.7 if a make 1st gear accel faster it will be 4 seconds lets say now its a 11 flat e.t. just i way to look at ur data when ur thinking about all gains possible