thegatekeeper14

ok well heres the set up

in a 92 da (DB2)
b20 sleeved
8.9:1 weisco's
eagle rods
b16 head with type r cams
e85
gm 3 bar map
dsm 950cc with resistor box
running crome


now when i start it it WILL NOT run with out some throttle open. the second it closes it dies out. there is tons of un used fuel in my exhaust,
the car shakes bunch. i went to my tuner and had 25% fuel take outta the base map. still same resaults. theres fuel on the pistons as well.

any imput will be appriciated.
ium sitting here in our shop. just waiting for advice...
thanks a bunch!

thegatekeeper14

no ideas?

AJxr

is there a such thing as dsm 950cc or is that a typo?

sounds like its surely tune related, shot injector, crazy fuel pressure. i had a similar problem with this when my map wasnt set for the correct map sensor i was using.

thegatekeeper14

thats what i was thinking but now im just so lost and dunno where to start

thegatekeeper14

my map should be fine this is the second base map

cjordan

iTrader: (1)

im assuming your tuner is doing your base maps, what are his thoughts? i have never heard of 950cc DSM injectors... injector stuck open maybe??

NLR808

What throttle body are you useing?

thegatekeeper14

type r throttle

thegatekeeper14

wellthe big issue here is to much fuel... to rich, andf violnt shakes

kevdix

hmm im running a very similar motor in my car, b20 sleeved same pistons/rods, b16 head, 1000cc injectors. I had the issue with the car bucking/shaking violently under 2500rpm in 1st/2nd gear. Just had my tuner adjust the a/f ratio in that range.
What I am very curious about is my car needs gas on the initial start up as well for about 30 seconds then it will idle fine. It is driving me crazy too so if anyone has some input I could use it as well.

Adam_b16a

does it sound like its misfiring?

thegatekeeper14

yeah seems like a mis fire

cjordan

iTrader: (1)

whats base timing set at?

thegatekeeper14

tdc, dizzy is center

accord_raffi

Test your injectors

98vtec

basemaps.....

thegatekeeper14

yea im thinking that too. my gf was pulling plug wires as i was tring to keep an idle. and no real change in the running conditions, so ill just have my tuner come up and run thrue it!

AJxr

did you hit it with a timing light? are all cylinders getting spark? was the distributor wiring touched at all? injector plugs swapped at all?

thegatekeeper14

yeah, i repined a obd 2 dizzy i did each wire one by one though.

BoostFedDB8

If you are using crome and if they are really 950cc dsm injectors which I've never heard of before, try taking that injectors size and multiply it by .60 and input that as ur new injector size. then apply fuel tools in crome into ur rom and increase slowly til it idles fine. this should make ur cranking easier also. good luck

AJxr

id go over those first, i had the same prob also when i wired up my obd1 distributor in my obd0 car.

thegatekeeper14

huh

AJxr

your distributor wiring, there could be a bad connection.

LightningTeg

Get a wideband and have it actually tuned instead of the basemap.

thegatekeeper14

^yeah hes comming out today