so my car is running rich, and tis probably because of the teg ecu. How do i fix this problem? 90 civic dx with si cam and mpfi swap. fuel pressure regulater?

 

i don't think the fpr will help, you'll go under the proper psi for the mpfi to work properly, might wanna put some parts on there to use the extra gas, or you can get a pm6 ecu. Its still good to have an fpr anyway.