need a little newbie help.

[whiteturbo]

Hey, i'm a newbie and ask a lot of stupid questions, i could search on dsmtuners but i HATE that site. Anyway, I have 2 extremly easy questions. First one is were does the coolant overflow tank thing mount? its close to my Intake but its not held up by anything other then the T'd cap. Next is i get this boost leak. It seems like a pipe poping off. I will be boosting, then all of a sudden i will not be able to build boost. i will i guess be building vacum pressure then once i get to 0 i will not be able to build any boost. SO at a visual inspection, i do not see any of my uicp off. The turbo outlet pipe is all hooked up still. Should i focus attention at my avc-r boost controller. I know this is pathetic that i have a car and i can't even do a boost leak test but thats the way it is. Sorry that i just wrote a short story.
SN: Boost leak don't know why i cant build boost past 0 and were does the coolant overflow mount.
thanks
:roll: <my knowledge.

[billios996]

what year is the car?
Follow all the intercooler pipes from the turbo to the intake. Make sure no clamps are missing or any obvious holes. Then follow all your vaccuum hoses and make sure they are all attached where they belong.

Is your idle crappy too?

[whiteturbo]

well, i think im not going to really post much, because i dont know what im talking about. Example: My car seems to boost, then after lets say 15minutes normal driving, when i go to give it some boost in 2nd, i will gas, then it will buck making it feel as though im hitting fuel cut. Again i realize i have no idea what im talking about. Im going to have an fpr put on soon, hopefully that will make my jumpy idle better. Another small quick question lets say im just going 15mph or under, i will be moving like my jumpy idle, pretty much pulsing foward a tad, but noticable. I think the fpr would cure this, am i heading in the right direction?
sn: My boosting seems all messed up. My car seems to be bucking almost while going under 15mph. let me know

EDIT #1: 1992 laser b16g most supporting mods

Another question if any one in Bergen County area, wants to look at my car and try and point me in the right direction with my car (like sell it.... :roll: ) or just what i should really pay attention to maintenance wise. i would do as "collegedropout" said and buy a wendys dollar menu lunch. :wink:

[T_K]

describe the jumpy idle?...

[whiteturbo]

its kind of hard to write, but if you were in my car you would definetly get it. It will just push u foward then hold you back, its almost pulsing back and forth. Then when you give it gas, it studders a tad then goes.
On another note i think i might be getting a little missfire, but i'm unsure of what it feels like. It will happen randomly and it will be when im in a certain gear not boosting, i go to hit the gas and i get an awkward sound pretty much a buzzing coming from the engine. Seriously if someone wants to make a couple of bucks and just take a quick look at my car and try to point me in thecorrect direction i would really appreciate it. I know all this crap im typing doesnt make sense and it probably seems like im 2 but its cold outside, and i don't have a garage to rip the laser apart to learn right now.
SN: Its a pulsing motion, not sure if i'm getting a misfire.

[Diablooffire03]

It maybe some knock and its pulling your timing. Does it just feel like you lose power than it comes back? And does it happen all the time?

[whiteturbo]

i will be giving it even amount of gas, then i will try to accelerate and it will stay still (hesitate) then buck and go. Is there anything i can look for on my apexia safc? im assuming a logger would be my best bet. As for right now i need tires, and just want it to run as well and as reliable as possible (HAHA dsm and reliable i must be nuts.)
thanks

[1gnasty]

i will be giving it even amount of gas, then i will try to accelerate and it will stay still (hesitate) then buck and go. Is there anything i can look for on my apexia safc? im assuming a logger would be my best bet. As for right now i need tires, and just want it to run as well and as reliable as possible (HAHA dsm and reliable i must be nuts.)
thankswell if u do shit the rigth way it will be reliable u cant just trow parts in the car with out the proper way to tune,but if it make you feel better keep blaming the car for ur fuck ups

[whiteturbo]

well, if i was smart i def. shouldnt of purchased an already modified vehicle. If i could go back, i would buy a stock vehicle, but i can't im just trying to get this vehicle out of a downspin, and turn it back into the beast it was, will, should be.

[billios996]

Sounds like idle surge and a vac/boost leak somewhere.
What size injectors? What are your afc settings?
Get a pocketlogger asap.

[Diablooffire03]

how bout you arrange to meet up with someone around the area that knows there shit so it can easily be figured out or atleast send you in the right direction.

[whiteturbo]

how bout you arrange to meet up with someone around the area that knows there shit so it can easily be figured out or atleast send you in the right direction.


i'm trying to arrange this, i just don't wanna come off as a jerk and try and force anyone into a crap situation.
Rc550cc injectors
255 walbro fuel pump

[whiteturbo]

i know your not supposed to bump your own threads but, my car isn't getting healthier. I dont want a catastrophic failure either. Please if someone in the bergen county area wants to help a stupid newb out i would really appreciate it. thanks

[whiteturbo]

none of you turds want to help me out? :(
atleast i can say i tried.

[billios996]

Calling us turds won't help your cause :wink:

When was the last tune-up, plugs, etc? Do you have a fuel pressure regulator to handle the big fuel pump? Did you hack the maf? Is the ecu chipped? What are your AFC settings, including the TH setpoint?

Sounds like you are getting part throttle knock. What are your AFC LO settings? You probably need to lean out a bit to handle all the extra fuel you're getting off-boost.

[whiteturbo]

hmm, well on sundays i try to go up into mahwah and drive on all the hills and curvy roads, cuz im just plain cool like that, and i again got that "buzzing" i swear to God thats the best way i can describe it. I would give it gas, then it would like buzz and idle like shit so i would turn it off right away. So it happened once, i turned off let sit for lets say 5 minutes. Turn on, proceed on my way, less then 3minutes later it happens again. I do the same thing and again the buzzing comes back. So then i just say fuck it i gotta get her home. I drive the last 6 miles with no problems. I would really like to have someone check my car out, if not if someone can walk me through changing my apexi safc. Does anyone know were i can get an instruction manual for my two apexi units, so maybe i can try to figure out what/how to tune my car. THanks
SN: Need some help tuning, the "buzzing" keeps coming back. I hear the oil gauge is complete bullshit, during the course of a drive, it moves SOOO much, not to extremle levels but still. All in all, should i just give up boost.
oh yea, and not having my afpr installed prolly has a lot to do with my 14mpg am i right?

[billios996]

dsm'ers help those that help themselves:
http://www.roadraceengineering.com/ecltechtips.htm
www.vfaq.com (http://www.vfaq.com)

Since you haven't answered my questions, I assume you don't know anything. You bought a modded car, time to get hands on. If you can't handle basic stuff yourself (like operating the afc) then you'll be paying a mechanic a lot of money, or you should sell the car.

[whiteturbo]

thankyou!

[whiteturbo]

ok, billios you really made me think, and step up. I want to do this. I've researched and understand i can't expect settings from other cars to work like mine. Now, i'm in a bit of a bind. I dont wanna go tune this thing with out the use of a logger unit, i dont want to end up starving the engine. For now i will show you guys my numbers, if anything looks out of place please tell me. I now look back and really beat myself up for being a stupid teen, and purchasing a modified car letalone a turbo'd car as my first car knowing money would always be tight.
Th point 40% Low 70% high
rpms low throttle hi throttle
1000 50% +5%
2000 30% +5%
3500 12% -17%
4000 7% -15%
4500 -15% -15%
5000 -15% -14%
5500 -15% -19%
7000 -15% -21%

when i purchased it, supposidly it was dyno tuned. again i realize my situation that i put myself in. the reason i'm asking is because i don't want to starve my engine. It has a blaha mas and no afpr i will soon have one installed.

when i give the car boost, it usually would sound like :
http://videos.streetfire.net/search/sti ... 13cb7d.htm (http://videos.streetfire.net/search/sti/4/115e6cda-9213-4e18-a9b6-98c50013cb7d.htm)
and then after that hesitation/fuel cutoff it would run pretty shit, pretty much stall out, or i would just kill the engine due to real bad idle. COuld this be due to low oil pressure? let me know, your probably just gunna tell me to research or sell... i need to give this a shot can't just quit.

[atc250r]

It will be a nightmare to tune with that 255 and no AFPR. If your running a 1G MAS, 550's, a 255, stock chip in the ECU, and no AFPR then it looks like your low settings are wrong. I would think that you should be pulling some fuel out across the board on your low settings.

John

[iboostdoyou]

do yourself the biggest favor in the world and buy a wideband o2 sensor. With a wideband, any safc newbie can tune a car, safely, and for the most power. For me, just knowing for a fact that the car was running EXACTLY in the parameters it needed to be, was more than enough reason to justify spending the $200 on it. Let alone the fact that it saved me from blowing the motor more times than I can count, it really was one of the best investments I made while modding. Spend $200 on the w/b and have a perfectly running car.... or leave it as is, hope that you got the tune right, and then spend $1000 when you melt a piston. For me it was a no brainer

[billios996]

Is there a ton of black smoke coming out your tailpipe? John is right, it seems you are way too rich in your low throttle, low rpm settings. But, that may be compensation for the Blaha mas hacking. Here is the sample from RRE page for a similar setup as yours

1G Turbo 16G
This car seemed to run lean to begin with. Even with 550s and all the honeycombs in, had to richen things up quite a bit to get the fuel trims at 100% (normal). These settings are with the honeycombs out and the adjusting screw out flush.

Low Setting:
1K +19 2K +12 2.5K +9 3K +6 3.5K +5 4K +5 4.5K +5 6.5 +5
High Setting:
1K 0 2K +3 2.5K +3 3K +4 3.5K +4 4K +4 4.5K +4 6.5K +8
Th-Point
Lo 30% Hi 80%

You may want to start by leaning out your lo settings a little bit from 1k - 4k rpm. You may be overcompensating for the hacked mas, especially with the 255 pump.

Also, dyno tuning will only effect the hi throttle (closed loop) settings. The only way to tune low and part throttle is to drive around with a logger watching your fuel trims.

[whiteturbo]

To me, the only sign that i'm really running rich is: the flames i get out my exhaust pipe, and the 14mpg!!! (thats shifting at 2000rpm..) I'm not pushing any black exhaust gas (to rich) I'm guessing that the afpr seems to be the best investment, next to the pocket logger. Would the fpr really help my gas milage?

[whiteturbo]

well my afpr installed, hope i can find the money for a logger. I will start to lean the gas out.

[whiteturbo]

ok, so now my FPR IS installed. I looked at what i had, and what people have done, i understand my car is not the same as anyone else so my settings will be diffrent then others. The stupid thing on my part is that i am not using a logger or have a egt. Pretty much i lowered my lo settings, but now on my crappy a/f ratio gauge aka light show it keeps showing LEAN and the car shakes a decent amount more, so then i add fuel and it seems ok. DO you guys say i wait to fool with this system until i get a logger or egt? What should i really look for?
thanks

[iboostdoyou]

wow, start lookin for new motors... If you're really relying on a narrowband 02 sensor, don't expect to be driving much longer. Purchase SOME way to monitor some settings ACCURATELY. Like I said earlier, a wideband will be your best friend. I am not a big proponent of loggers, even though you get plenty of info from them, the fuel tuning aspect of it is still guessing. A wideband is precise, no questions asked. Rich is selling one in the store section as we speak, 210shipped, brand new. Check it

[whiteturbo]

ok, that sounds like the way for me to go.... should i just put it back to the old settings and wait it out till i can get some sort of wideband, or logger? THe only thing im really trying to get here is better fuel milege, im not looking for the numbers (as of now)