jimmybean21

i have a stock h22a that will be going in the shop soon and i was wondering what would be the best size injectors to run. i'll only be running 7 or 8psi since the motor is stock. i have a set of precision 780cc injectors but i think they maybe to big and possibly flood my engine. any help would be appreciated. thanks in advance.

dpetro1

what vehicle is the motor in? your 780's are low impedence so most likely you will need to add a resistor box. i would just go ahead and use them rather than buying another set. as long as the car is tuned properly the injector size should not really have any effect on driveabilty. i run 1000's on my car and it runs just fine. 780's will meet your power goals just fine and leave room to grow

jimmybean21

my vehicle is a 93 accord.

dpetro1

in that case you should already have a resistor box. those 780's should pretty much be plug and play.

boostedeg302

780's are not that large of an injector that you will have idling problems. I used the same injectors and they worked great. The only way they will flood your engine is if you dont have a tune which is a bigger problem than which injectors to use. Also, when choosing injector size, you need to state your power goals rather than how much boost you are looking for. Sounds to me like your only shooting for about 300whp. Keep your injectors and spend the extra money on headstuds and things of that nature.

jimmybean21

power wise i'm hoping for around 325 whp give or take. i'm new to boost and i'm currently in the process of building another motor and just wanna play around with this one a little to get the feel of boost. whats kind of idle problems do you think i will have and can it be fixed?

oneiro

780 is more then enough for 325whp on pump gas, if you try e85 I think you're at the limit of those injectors. Also I believe anything bigger then 750 you will need a FPR to turn up the pressure to get the best atomization.

GL