I just installed ford brown top injectors on my 98 cavalier 2200 now it idles like @!#$ has anyone ran injectors like these on there stock fpr im about to put a afpr in right now but im just making sure that is the problem what do u think?>
so, you're running bigger (higher flowing) injectors on a stock tune. so the computer thinks there's a stock injector in there, when in reality, it opens the pintle valve and fuel just hemorrhages into the port. sounds like you're running way too rich. before you blow something up, do it right. get hptuners, tune for those bigger injectors, and you wont have the problem.
of course, this is just what i think is wrong, i could be a completely wrong a$$hole.
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what else could i do would it help to tune with a wideband o2
You need to change your injector constant. Tuning with a wideband will always help but as far as just runing right you need to change the constant.
so i can use a wideband to fix that i dont have the money right now to get it tuned with hptuners
uhh, a wideband wont help you any without any way to actually change the settings in the computer.
to reiterate, A WIDEBAND ON ITS OWN WILL NOT HELP.
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why not just put the stock injectors back in and adjust the fpr to the stock level. problem solved
kinda in that same boat . have a 99 cavalier with 91 quad4 h.o in it, did brown top injector swap and homemade resistor box . Now it idles ok but wont rev past 4k in any gear.no codes besides my cam sensor thats not hooked up any advice
wow holy old thread... i was about to give the O.P. @!#$ before i realized this is 5 years old...
We need a very old thread notifier.
In this case, it would have been acceptable to create a new thread,.. its 2012, not 2007, you have a different motor, . and hpt doesn't apply to a 91 pcm ... so its off subject from the orig post.
To answer your question, there are a few people in here with H.O. swaps, however, they are almost all on quad4forums.com with a lot of other people that build the older quad engines. You'll probably get a faster reply to your question over there..
