Stock ECU and Engine limit question.
Hey Everyone!
I just picked up a 2007 accord coupe. 167,000 Miles. for $4500. It has the Ka24a4 engine with manual 5 speed Transmission. (atleast I looked it up and believe thats the engine it has, please correct me if im wrong, I saw the ka20 and ka24a2 engines and it looks like I have the ka24a4.) Engine and transmission runs and shifts perfectly.
Im turbocharging and learning! I know I will have to eventually rebuild engine and tune ECU etc.... I would like to know if I can put a high pressure fuel pump, and install the turbo now with stock everythingn else and will the car run fine boosting only 6 psi and *no more. I would like to get all the hard turbo and interocooler installation done. Will the stock engine and ECU run fine and handle light boost to get me started? If so, Anything else I should do besides high pressure fuel pump? Can i go higher that 6 psi ?

 

There is a different forum on this site that may get you better answers. This forum is typically for general repairs.

My way of working on this mod would be to take small steps to ensure you don't cause unintended damage with a turbo.

I'm not sure how much boost the accord engine can mechanically take. If you can install the turbo and start it at low psi (like 1 or 2) monitor the fuel trims to see if the engine and injectors can keep the proper air/fuel ratio without setting a check engine light. Then increase the psi to 4, and repeat. If the engine starts running lean, then you can install a higher capacity fuel pump (and possibly injectors). You don't want to have a high pressure fuel pump make the engine run too rich unless your modifications need it.