Alright, I know this has probably been answered before but here goes. I have a 90 Accord (f22a1) with basic bolt ons, I am wondering if I put in a f22a6 cam (because I have to change the cam seal) will it work with the stock ecu (without issue)? I probably wont notice an difference until I add the f22a6 ecu and the h23 IM right?

 

You can use the F22A6 cam without issue with the PT3 (DX/LX) ECU, but you will get the most benefit when you combine it with either the F22A6 IM or the H23 IM.

My car currently runs with the F22A6 cam and an H23 IM. I ran it for over 6 months on the PT3 ECU, but I now have a PT6 (EX) ECU.

 

Wouldnt it also be beneficial to use the a6 valve springs?

 

You can, but they are not necessary. I am currently using the A1/A4 springs. The only downside is that I need to adjust my valves more frequently.