95GST runnin like crap

[2G-RACER]

ok so im new to the whole dsm world ive been tuning acuras for some time now and decided to try something new and dsms seemed like the ticket, ive done about 2 months of everyday reading and research to get up to speed...... sooo i went and bought my first dsm a 95 gst off the internet, payed for it had it shipped everything was good till i got it. First issue with it runs rich, checked every possible reason everything is fine(rec. bov, no boost leak,new plugs,new magnacor wires,good coil,mew mass,good wiring,fuel system good) Second being a 95 i checked to see if it came with an eprom, viewed over STEVE'S ecu list of dsms come to find out is not and my ecu #s arent even on that list(MB942485 GOT11072M 5313) with no letter "e" on the bottom right corner.So my question is: what is another reason for it to run rich? it idles rough,blows black smoke out the exhaust, and whole engine shakes and stutters until reved up to about 3000 rpm, could it be the ecu not being the correct one or did i just buy a piece of crap????

P.S.Being new to dsm tuning any advice would be helpful! THANX!!!!!

 

[RayBan GST]

which injectors do you have? do you have the stock injectors ? if you do not have a stock injectors your car will run rich and you need a tunning tool to tune it .

please update your profile on all the mods that you have if any (i can see you have FMIC and some gauges and a filter ) but what else ?

do you have an after market fuel pump? which turbo do you have ?

please mention everything


also take a photo of your engine bay so we can check it out and let you know if everything seems ok.

good luck

 

[poconomotorspor]

you need a tune... possibly a vacuum leak but im leaning towards needing a tune man

 

[talondave]

Sounds like a ecu! Do you have a friend that can swap you ecu's to see if that fixes it.

 

[snowborder714]

Boost leak test.

By the way, the item you looked at (MB942485) is the cruise control module. No wonder why it wasn't on Steve's list.

 

[Dsmj89]

+1 on the boost leak test. Also as mentioned before, do you have stock injectors ? If not, get a set and swap these back in till you have something to tune your bigger injectors with.

 

[nyTalonTsi]

Agreed with the boost leak. When i bought my 2g, i hit a harsh bump and my lower piping came apart i didn't know till i got under the car. Another is my car ran rich because i had 750cc injectors and even though i had a wally 255 and afpr i couldn't tune using the safc. So like said check for boost leak and take a look at your injectors to make sure their stockers. If you don't know what they look like here yeah go.....

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[2G-RACER]

the whole car is back to stock after doing a boost leak test with the fmic i put everything back to stock: intercooler,bov, even plug wires, except the air filter, retested no leaks fuel pump is stock not even rewired turbo is the stock rebuilt t25, injectors are stock, sorry it is MD not MB on my ecu, rechecked the list and not on there. Still runs the same, checked timing and is up to specs

 

[Bluefire16]

Take a picture of the ECU .... im curious...

 

[2G-RACER]

ill post a photo of my engine bay here real soon just waiting to get my digital camera back from my girlfriend u all know how that is jaja!! by the way the engine is rebuilt i just found that out today supposedly thats the reason i payed $3500 for it

 

[snowborder714]

I would also like to see a picture of the ECU - external and internal.

 

[2G-RACER]

yea ill take a pic of my ecu inside 'n out as soon as i get off work

 

[BklynsDsmer]

if its a rebuilt yea you have to find out what parts were replaced. especially on the injectors, had same problem put on a chip and it works just fine so, check your parts.

 

[Bluefire16]

I just think you might be looking at the wrong electrical box. Or maybe the computer is from a 3g or even a evo computer? Idk i would just like to make sure....your positive it couldn't be a smudge or something?

 

[2G-RACER]

sorry guys i couldnt get a pic of my ecu my girlfriend returned my camera but no usb cable so i cant upload them....no is not a smudge i have no clue whats goin on with the ecu a friend of mine said the same thing about the ecu being from a an evo or a 3g eclipse, but then how would it just plug into the ecu if after 96 the connections changed didnt they??? Also the check engine light is always on.

 

[2G-RACER]

another thing i noticed is i unplug the mas with no difference if is plugged or unplugged, same with any of the sensors around the throttle body is that normal?? Then it makes a clicking sound in or around the intake manifold after revved up to about 2000 rpm

 

[BklynsDsmer]

tick is your lifters shouldnt be a problem but if you do wana stop the tick i can say best way, change it to a 3g lifters. and the mas not working , yea you have a problem . of the car cant read how much air is going in then there is no way that it should even be at idle right.

so make sure that you have a;; your sensors connected.

 

[Redwan]

change your mas and your problem should be solved..think thats what it is, i've had that before, car was running rich and idle was bad, changed it and was good to go, u can get one at a junk yard or craigslist or on the classifieds on here..good luck..