The first 10-15 min regular driving the car is fine. After 15 min or so the car drops at about 300 RPM at idle soon after a few seconds it will jump back to around 900 RPM. Also Driving normally the car will totally bog down. Practically to the point where the car wont move until i reach boost and it just seems fine. Same as if i were on the streets or freeway. Bogging problem at low RPM's before boost.

My setup:

OBD-1 Bone stock 1995 LS
stock ECU
stock injectors
stock fuel pump
vortech FMU 12:1
garrett t3/t4
rev hard manifold/FMIC
greddy type s BOV
delta gate waste gate 7psi spring
NGK BKR7E spark plugs
NGK wires
timing retarded to about 12-14
also running off the down pipe at the moment (would this be a problem?)

No CEL's at all

Just got the car out not too long ago. Was wondering what the problem was. Ive been searching the boards and reading about how it might be running to rich. Which makes me hesitant to put in a fuel pump and injectors which will only throw more fuel in. Please any input would be apprciated TIA.

 

up

 

TTT

 

i had a problem like that anfter i had the inlet off. i just reset the ecu and it was fine again. I didnt get any CEL's either

 

what do you mean by inlet?

 

sorry, the inlet manifold. when i put it all back together it would idle fine till it warmed up then rev to 1200 and drop back down to 600 and back to 1200 and so on. Spoke to a friend who has a honda tuning business who said to just reset the ecu. did it and it was fine again

 

oic

 

stock injectors? might want to get bigger inj. and a real ems

 

your timing is crazy. You should only do it maybe 6 degrees from stock... check your timing.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 93turbo16 &raquo;</TD></TR><TR><TD CLASS="quote">your timing is crazy.</TD></TR></TABLE>

yea....it's retarded way too much. i'd say take off a degree per psi of boost. tht should be more than adequate.

 

ahh ok. Isnt stock timing 16?

 

bump

 

What's your fuel pressure? Mine does that when it's running pig rich, but it also does that when the timing is hella retarded, or it's running damn lean.

 

thats interesting... im going to look into that i honestly think is running real rich. I dont hear pinging ot detonation.

 

Pull the plugs and check the straps If it's that rich they'll be quite dark.

 

yea dude its weird the actual thread of the plug is black as hell but the white tip is still white.

 

bump

 

I would think that means you're running very lean and stumbling. Cold base because it's a cold plug, so sooty deposits at the base, and white tip because it's lean; the strap usually stays warm. Try upping the fuel pressure.

 

weird. So confusing meng

 

Bump