i recently wired in my 880's and 3 bar map sensor and my aem ems. and i cant pass 6k rpm, i go to about 5900 and then it starts sputtering and if i keep giving it gas it passed 6k but all messed up. i got the car tuned thinking it was probably the ems and it didnt fix the problem. any suggestions?? maybe i wired the 3bar or 880s wrong??

 

Sounds like you're getting too much fuel.

 

my tuner said it was at 12.1-12.3 all the way across

 

Is your tuner using a wideband O2 sensor? Because if it isn't, it probably can't tell the difference between 12:1 and 2:1. (Which would both return an identical voltage on a narrow-band O2 sensor)

 

yeah , hes using a wideband

 

come on guys help me out!!! could it be i wired the injectors wrong?? i used individual resistors not a resistor box . or did i wire the 3 bar map sensor wrong maybe????

 

got vtec?

 

have you tried another ems?

try logging the errors and see if you see anything...

 

You say you got it tuned, but how did the tuner tune the car w/o it being able to rev past 6000rpm's??

 

yes i have vtec, and when i went to get the car tuned it will still do that but i thought it was something having to do with tuning but i guess i was wrong . so he just tuned up to that point

 

I had a simalar problem and it ended up being my chipped ecu... i cut the jummper on the ecu and it was all good, eventho i was now running the b16 off a p28 i still had vtec and all that...... just a thought.

 

hmm... well i've had this problem ever since i put the ems. another thing it could be is my wiring harness was sliced a while back for a vafc. could that be it?

 

sounds like a bad tune.
is your tuner experienced with the aem ems? because if u dont know what your doing it can get kind of complicated

 

yeah, hes known on here to be a good tuner. i got it tuned at church automotive testing.

 

jdogg i havent tried antother ems , im got try logging to see what comes up

 

do u have the aem uego also?? if so, just datalog everything and see whats going wrong. use the features of the ems and it will practically fix itself

 

Try lowering the vtec point to 5000...just a thought

 

tried lowering it already.

 

Sounds like your tuner is a moron....How do people trust others to make there cars run good, I dont understand!?!?!?! I go to a dyno but all they do is run the machine, me and my friend make changes and we tune they stand there and look pretty and start the dyno to run it and hand us the sheets so we can see where to make changes.....

 

i would do that too if i had some experience with the ems.

 

any more suggestions???

 

did you install the 3 bar before or after you tuned it?

also again, did you guys check and verify base timing to be correct?

 

no, i installed them before he tuned it. this is what happened, i got a base map from the aem website for the 880s and the 3 bar. i went to install the injectors and the 3 bar and i put the ems in. the car turned on and ran good but it would cut off after about 5900 rpm. figured it was something to do with tuning or something so i took it to get it tuned and he said it wasnt the tuning. maybe a defective ems ???

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by bluesi00 &raquo;</TD></TR><TR><TD CLASS="quote">maybe a defective ems ???</TD></TR></TABLE>

doubtful.

Do you have your calibration file handy?

 

yeah, i sent it to u already, remember?