OK i did 1 6.1 roller rocker and new 24lb injectors on my 88,350 TPI. I put the top back together and now she will surge at idle. As soon as she warms up, it will almost seem like she was running normal again. Any help on why it surges would be great!

 

did you get a chip or change the injector constant in yours? if not, that is probably why. also check for vacuum leaks.

 

How do you change the injector constant ?
Im not sure what you mean? I didnt change the chip.

 

when i went to bigger injectors, i didn't change my chip. all my car would do at idle is surge. the injector constant is the part of the programming that tells the ecm how big your injectors are. so, your ecm still thinks you have 22lb injectors.

 

Oh,so the only way to get rid of the surge is to get a chip made or put the stock injectors back in?

 

yup

 

thanks