good a/f ratios

[allrice4g64]

just got my wideband installed today and i was wondering what some good numbers where to go off of at idle,mid,wot, i am running 8 psi on 450s with a 14b. at wide open throttle its at about 11-12 at mid or cruising its 15-16 and at idle its 17 does this sound about right? or what would be some good numbers at wot,mid,idle?

[mko]

idle 14.7
cruise 14.7
wot 10.8

[qnz]

is this a stock car? What wideband? Where is the sensor mounted?

The values sound OK for a non-turbo car

[allrice4g64]

i adjusted my maft translator as much as possible in the wot witch with the aux on 4 and base at 2 and the best i could get was 11.1 at wot. and richened it all the way up at idle and it stays in the 17s wich is real lean any ideas?

[mko]

is this a stock car? What wideband? Where is the sensor mounted?

The values sound OK for a non-turbo car

He says hes turboed but we havent seen a single pic yet.


i adjusted my maft translator as much as possible in the wot witch with the aux on 4 and base at 2 and the best i could get was 11.1 at wot. and richened it all the way up at idle and it stays in the 17s wich is real lean any ideas?

H/o you set the AUX and BASE once to compensate for the injectors. For you BASE = A or B and AUX = E and you leave that alone.

This is you base setup. With this setup the car should drive. So let it warm up and then use the IDLE knob to set the idle to 14.7, if you still have the IAC it will automatically adjust he AFR at idle to 14.7 (at least mine did). Just click the IDLE knob to the rich side a couple of times and watch your gauge. IDLE knob adjusts from 0 to 3k rpms, so that includes your cruising speeds. Then go on with the rest of the knobs

If you cant generally richen it up then move the BASE knob only to 8 or 9 and try again, but you should always have you base tune set with BASE = A or B.

As QNZ said, wheres the bung welded. If you have it far back on the exhaust it will slow down the refresh rate of the wideband. It will have 3-4 seconds delay and ratios will be 1 or 2 units off. I have it 12'' from the turbo and it gives instant readings. Also, I hope you dont have it past the flexpipe - this will thow the readings off as well.


Do you have any error codes? Hows your front O2 sensor?

[mko]

Do you have adjustable fuel pressure regulator or stock one?

Also lean mixture usually mean lack of fuel, so it could be fuel filter, pump, regulator or too much air in the manifold at idle. What rpms is your idle at?

we need PICS to see whats up!!

[allrice4g64]

ok i was going off the chart for what it said for a 2g dsm. my exhaust has no flex its full stainless 3 inch from the turbo back and its 16 inches down pipe and its before the cat. my 02 sensor was working fine when we had it hooked to my buddys evo scan. im sorry i dont have any pics up yet i only can take pics with my cell phone but as soon as i get all the bugs outa the turbo setup ill take numerous pics. the only code that came up was the idle control motor. im not sure if that came up because i am not running coolant to my throttle body because them lines now cool my turbo. so set my base at A or B and my aux at E and then start over tuning from their?

[allrice4g64]

i have the stock fuel pump rewired, i am running the stock fpr although i do have a crappy adjustable i could use. i just dont trust it because on my talon it wasnt accurate.

[mko]

yes and reset the ECU before tuning

[allrice4g64]

one thing i should mention would be my turbo seals are starting to go and its smoking a decent amount outa the exhaust. i did a compression check and its 180 across the board. will the burning oil affect the a/f values? i do have a rebuild kit just gotta find time to pull the turbo off again. im sorry im asking so many questions i just have so many.

[mko]

not for now but eventually itll build up on the sensor from all the oil in the exhaust. its ok temporally.

throw in the rebuild kit. i do my turbos in 15 min

[allrice4g64]

ok one last question. i have the aem 6 in 1 wideband, now when the cars not even running but with the key forward its in like the 15 range and it fluctuates around why is it doing this when the car is not even running. i have the same power wire to my wideband gauge as i do for my boost gauge. should i try running to a differnt power source and if so what wire would u recomend.

[mko]

did you buy it used? Once its used these start doing this. When they are new they stay at 20 or the leanest they can can display

[allrice4g64]

brand new in the aem box and wrappers.[URL="http://cgi.ebay.com/ebaymotors/AEM-GAUGE-TYPE-6-IN-1-WIDEBAND-UEGO-CONTROLLER-30-4100_W0QQitemZ150428193394QQcmdZViewItemQQptZMotor s_Car_Truck_Parts_Accessories?hash=item2306381272"]http://cgi.ebay.com/ebaymotors/AEM-GAUGE-TYPE-6-IN-1-WIDEBAND-UEGO-CONTROLLER-30-4100_W0QQitemZ150428193394QQcmdZViewItemQQptZMotor s_Car_Truck_Parts_Accessories?hash=item2306381272

[mko]

brand new in the aem box and wrappers.

http://cgi.ebay.com/ebaymotors/AEM-GAUGE-TYPE-6-IN-1-WIDEBAND-UEGO-CONTROLLER-30-4100_W0QQitemZ150428193394QQcmdZViewItemQQptZMotor s_Car_Truck_Parts_Accessories?hash=item2306381272

http://cgi.ebay.com/ebaymotors/AEM-GAUGE-TYPE-6-IN-1-WIDEBAND-UEGO-CONTROLLER-30-4100_W0QQitemZ150428193394QQcmdZViewItemQQptZMotor s_Car_Truck_Parts_Accessories?hash=item2306381272




fixed

[allrice4g64]

so any ideas why it would be doing that? not enough power maybe because i have it taped into my remote wire that goes to my amp because that is a 12v wire.

[qnz]

wideband needs to heat up first to read optimally.


now when the cars not even running but with the key forward its in like the 15 range and it fluctuates around why is it doing this when the car is not even running. i
there still is air in your downpipe pipe when you turn the car on (air exists everywhere). I dont know why your wideband is saying 15's unless your exhaust is so rich, it detects leftover exhaust gas sitting in your downpipe

16" downstream, i would say your afr's are sliiiiightly leaner than what it really is. maybe only .1-.2 points leaner

your exhaust has no flexpipe? I would be worried about welds cracking and exhaust leaks when the exhaust and motor moves.

[allrice4g64]

it has rubber hangers all over to compensate for no flex. a exhaust shop did it its a full 3 inch stainless system with a magnaflow high flow cat and magna flow high flow muffler

[allrice4g64]

so tday i tryed setting my aux to E and my base to A and my car wont even run. i tryed adjusting the idle both ways and it wont run it starts then dies within a couple seconds. i adjusted the idle set screw on the throttle body and still wont run any ideas?

[mko]

if this is true then you must have 240cc instead of 275cc. What year is your car?

If you really have 240cc then your settings should be set for -47% or BASE=4 AUX=F

[allrice4g64]

no no my fault bud i have dsm 450s in there with transistor box. so what should i set the aux and base for with 450s?

[mko]

this is the formula:

(old size/new size)-1 = %

275/450 -1 = -39% -39% is BASE=B AUX=E

240/450 -1 = -47% -47% is BASE=4 AUX=F

http://i66.photobucket.com/albums/h255/Ithinkyou/install/AUXBASE.jpg

So if your car runs at AUX=4 BASE=2 then thats -45%

[allrice4g64]

wow about time iv been searching for awhile to figure out what to set the aux and base at and i can tune the rest my self. i did have 275s but now have 450s. thanks for all the help. this may sound like a stupid question but do the 4g64s have a stock knock sensor? the reason i ask this is because the other day when my buddy had his evo scan hooked up to my car and we were trying to tune it at wot on 8 psi i only got one count of knock and the timing was advancing. almost to good if you ask me and then i got to thinking if the 64s have a knock sensor like the 63s.

[mko]

nope no knock sensor. when it knocks try adding some fuel right there

[allrice4g64]

well how would i beable to tell if it was knocking if i dont have a knock sensor? the evoscan must just for some reason give it one knock count because the 64s dont have one.

[mko]

it all comes to get runnin man. If it runs good at AUX=4 BASE=2 but it doesnt get rich enough, then richen it from the base knob by one click and try again. With base settings done right your idle should be right on or very close to 14.7. If its not right on then add or take some fuel with the IDLE knob.

On a second thought. When I was tuning in my car I set it so it starts and drive. Then I took it for a ride. It was a long straight road where i was cruising with steady 3000 rpms. With the throttle steady, I just moved the BASE knob until I had 14.7, IDLE,MID and WOT knobs were zeroed. After I had the BASE knob set, I went for IDLE, MID and WOT, but never moved BASE knob again

[mko]

well how would i beable to tell if it was knocking if i dont have a knock sensor? the evoscan must just for some reason give it one knock count because the 64s dont have one.


you can hear it knocking. the sensor will catch that way before you can hear it, so consider hearing it as a last precaution. You hear the ding-ding sound - time to let off the gas

[allrice4g64]

wow about time iv been searching for awhile to figure out what to set the aux and base at and i can tune the rest my self. i did have 275s but now have 450s. thanks for all the help. this may sound like a stupid question but do the 4g64s have a stock knock sensor? the reason i ask this is because the other day when my buddy had his evo scan hooked up to my car and we were trying to tune it at wot on 8 psi i only got one count of knock and the timing was advancing. almost to good if you ask me and then i got to thinking if the 64s have a knock sensor like the 63s.

[mko]

and why did you post this again

[allrice4g64]

sorry about posting again stupid laptop. well unfortunately my maft box is located under the hood so i have to pop the hood everytime i need to make a adjustment. i am just gonna go off the chart you gave me and hopefully that works. the reason i had to set at aux-4 base-2 is because the manual says thats what to set it with a 2g with 450s. but the chart makes more sense because the 2g computer and our computers differ so the fuel maps are differnt. im slowly learning about this tuning stuff and im starting to come around.

[mko]

yeah but 2g already is set for 450cc and you dont have to compensate there. it would ve been the same if you wanted to run some like 920cc on 2g. you know what i mean. The galant has 275cc and 450cc is twice as much of the injector size and when you apply the formula it comes down to -38-40%


I had all wires extended and i tune it from inside

[allrice4g64]

that would be nice im sure one day i will do it. iv came pretty far in a month though from saving a car that was about to go to the scrap yard and buying it for 200 bucks and putting a transmission in it and just expected it to my beater but the more i searched the more i started seeing there wasnt any reason why everybody with a 4g64 sohc shouldnt have a turbo on there car. but anyways thanks for the help its dark out now so ill post back tomorow after i play with it a little more and ill let you know what happens. then wednesday i get to rebuild the whole turbo with new seals and bearings cant wait

[allrice4g64]

so i played around a little more today i tryed setting the aux at E and the base at B and the car wont run worth a crap so i readjust the aux back to 4 and base at 2 and i dialed the idle in it idles at 14.7 to 15.1 fluctuates a little bit but pretty close. now i am actually running like 10.00 all the way rich under boost which i think i should beable to tune out by adjust some more stuff. why doesnt my car run any good with the aux and base set at what its suppose to be according to the formula of old injector size and new injectors size?

[allrice4g64]

anybody? it almost seems as if the ecu is rejecting the tune im really getting frustrated with this. one time i will start my car and it will be pig rich under wot and then i shut the car off and start it half hour later and under wot im running lean doesnt make sense to me?

[mko]

we need pics? its like shooting in the dark.

[allrice4g64]

ok what do u need pics of in general like engine bay, turbo setup? maf translator settings,wideband reading?

[mko]

everything

[allrice4g64]

i dont know how to upload images it wont let me.

[allrice4g64]

http://i922.photobucket.com/albums/ad66/allrice4g64/bostandwideband.jpg
http://i922.photobucket.com/albums/ad66/allrice4g64/closeup.jpg
http://i922.photobucket.com/albums/ad66/allrice4g64/downpipe.jpg
http://i922.photobucket.com/albums/ad66/allrice4g64/intercoolerpiping.jpg
http://i922.photobucket.com/albums/ad66/allrice4g64/intercooler.jpg
http://i922.photobucket.com/albums/ad66/allrice4g64/maft.jpg
http://i922.photobucket.com/albums/ad66/allrice4g64/magnaflow.jpg
http://i922.photobucket.com/albums/ad66/allrice4g64/mounted.jpg
http://i922.photobucket.com/albums/ad66/allrice4g64/turbo.jpg
http://i922.photobucket.com/albums/ad66/allrice4g64/returnlline.jpg
http://i922.photobucket.com/albums/ad66/allrice4g64/pan.jpg
http://i922.photobucket.com/albums/ad66/allrice4g64/oilfeed.jpg
http://i922.photobucket.com/albums/ad66/allrice4g64/muffler.jpg

[allrice4g64]

here are the pictures?

[mko]

looks good man. now your thread is worthy

[allrice4g64]

so back to my tuning issues lol could it be possible that i have to ground the maft translator because the gm 3 inch mas draws more current. or ground both the mas and the maft seperate i cant get this thing tuned good and its bugging me. its either rich or lean cant get it good under wot.

[mko]

the GM MAS get its ground trhu the translator. If the translator has its ground wire grounded then it works. Do me a favor. open the translator and see if the LEDs flash somehow weird. Theres a troubleshoot guide at the end of the manual. Something here is wrong. IDK if its the translator or your wiring, vacuum/boost leaks.

[allrice4g64]

when the car is idleing at 800 rpm the green light is on. when i rev it the green light gets brighter. the red light was flashing when i first turned the key forward so i unhooked the battery and made sure everything was tight and now its not flashing anymore. been running for 15 min and hasnt flashed once. the reason i ask about the grounding of the maft is because on dsmtuners there was guys saying on their that the gm 3 inch maf draws alot more current and the stock ground through the wiring harness isnt a strong enough ground so for better results you need to ground the translator box and the gm 3 inch maf directly to battery or chasis. also today i noticed i have a pretty bad exhaust leak where downpipe connects to 02 housing so this could be causing alot of my tuning issues throwing the wideband off im going to fix that tomorow and see if that helps but i am still curious to know why i cant take away 39 percent fuel and why that translator was flashing.

[allrice4g64]

i reset my ecu upgraded to a 2g fuel pump and tryed tunning again today. everything is good when i get it all dialed in but then the more and more i drive my car the more and more the ecu changes everything i then before i know instead of being 14.7 at idle im at 16 and instead of being in 11s at wot it raises to 13s. i have zero boost leaks and zero exhaust leaks could it be that just the translator enough is not enough for tuning?

[mko]

front o2 sensa'

[allrice4g64]

its reacting fine, fluctuating like it should from low voltage to high voltage according to my scan tool with live data. sooo?

[mko]

what do you mean from low to high?

High means rich, low means lean. When warmed up it should keep steady around the middle (o.5V) or 14.7. If the stock o2 works fine it should fluctuate very little - up to 14.9 and back.

[allrice4g64]

hmmmmmmm when its idleing its fluctuating from .02 up to .09

[allrice4g64]

its still leaning out really bad in wot it starts at 10.1 and then when im in boost for more than a second it starts leaning out 11-12-13 etc im running the 450s,2g fuel pump, wot knob cranked all the way rich on the translator, changed the 02 sensor?? no boost leaks, no exhaust leaks, could it be fpr? i need to get this figured out asap because its my daily driver thanks.

[allrice4g64]

now today i noticed my 02 sensor is staying in a open loop mode sometimes while i am cruising.

[allrice4g64]

hmm guess nobody on here knows shit