Im an amateur. I just bought back my first car (literally, i bought it when I was 15, Im 25 now) Its a 92 rs 25th Anniversary. The guy who bought it from me originally swapped out the 305tbi to a 350tbi. It it surging in idle while warming up (it stops when warm). Ive been told I need to replace the injectors for 61-65lb injectors, the esc, ecm, knock sensor, and maybe fuel pump....BUT Im getting 1000 different opinions and responses. If I could possibly get specific info from anyone who has gone through this, I would truly appreciate it...AND...specific part numbers would be also very much appreciated. Im just not sure where to start. My head is gonna explode.

 

Well, do you know if he changed the parts over too?
Before changing the fuel pump, test the pressure. It should be 9-13psi, if you think that there is 305 injectors on the 350, why not buy a tbi adjustable fuel pressure regulator to add pressure (1lbs at a time & drive).
Make sure the egr valve isn't opening at idle, it'll cause it to run rough at idle & surge.
Check carefully for vacuum leaks.

 

Mainly you need the ANLU 350 TBI chip. You should also have the following: 65lb injectors, 350 ESC module, 350 Knock sensor. Then you should be all set.

 

Ok thank you very much.

 

I will do that. Thank you!

 

Anlu chip, 1228746 ecm, su154 knock sensor, esc100 spark control module, and 65pph injectors (or 350 inj 61pph with an adj fpr)

What ive gathered from all reading and cross referencing part numbers, that is if the engine is post 87 otherwise you need dif esc and knock sensor

These are autozone part numbers as well so easy to get