I have a 96 integra with a b16a. I have a greddy turbo kit with a type 31 intercooler. I gapped my plugs at .035, they're one step colder. I have an msd 6a, and blaster ss coil. I also have a greddy emanage. So heres the deal. Ive been driving around the last few days now that my car is done and found that when around 4k to 6k rpm if im boosting which is usually around 7-10psi the car stumbles and hickups really bad. I cant even rev it past 6k when it starts. I have my retard around 1 1/4 degrees per pound. I read another post that said if my timing is retarded to much it will stumble .. anyone else have this type of problem?
Any other ideas?

 

uhhh.....fuel?

 

uhh... yeah i have a 12:1 vortech, 370 cc injectors which are set at + 15-30% at anything past 6psi..just for safety till i get my wideband hooked up

 

are you using a stock fuel pump? what are you "setting" your injectors with?

 

You might be running way too rich since you have a 12:1 and you're adding 15-30% fuel on boost, if I'm understanding you correctly.

 

Sounds lke your going LEAN. What Fuel pump are you using? You're going to at leat have to have a inline or some sort of high pressure in tank. to keep up with that 12:1 FMU.



[Modified by RAWB, 10:30 AM 1/19/2003]

 

got a walbro 255lph , I am using my emanage to control the injectors. Umm...
I had my setup much leaner before, more like 3-5% additional fuel, and it was stumbling, so I changed the maps to be richer just for safety... I dont really want to blow the engine. I also had the timing much less aggressive before and it did the same thing. I boosted to 12psi and my timing was at -5.

 

Ill hook up my wideband O2 today and see where my a/f is at.

 

12:1 fmu with 370s is crazy rich, I ran 370s with a 6:1 fmu and ran plenty rich, It sounds to me that have way too much fuel.

 

Like i said i had the fuel set much leaner before.. 2-5% and it was still stumbling..so maybe I was rich then too..Ill have to check

 

running too rich will sound really wierd (like a soft revv limiter almost) and BOG running lean will go boom. lol

most likely you are too rich.

 

maybe the fuel pressure is too much with the 12:1 fmu and low pressure walbro 255. I was under the understanding these pumps did not running high pressure and what not from a fmu setup like that.

although does sound like running too much fuel if bogging.


[Modified by twkdCD595, 1:22 PM 1/19/2003]

 

ran my wideband today, I am running very lean when boosting. I was between 14.7- 16.0 when boosting. I did a data log and found that my emanage was not adding the extra fuel that I put in the map. SO now i have to figure out why the emanage isnt adding .