[oVeRdOsE.]

Hi, Im diagnosing the hpfp 450 walbro noise, and I put back the stock 328 LPFP.

I'm questioning now if I can leave it there. Some source state you can go up to 500whp with the stock one.

Ill do some log to see if it holds the pressure , what ? if it doesn't fall bellow 50-60psi I should be good.

I have a small-medium size turbo, 6262 + meth 600cc. On pump 91.

Did not have dyno numbers yet, but 22-23psi should put me around 550bhp, so I should be fine ?

Any concerns?

[noidex]

If the LPFP can't keep up then the engine will simply misfire as far as I know. If you keep an eye on the fuel pressure then you should be absolutely fine.

Sick build btw, I can only dream of having your problems

[oVeRdOsE.]

problems are not to the end yet

This is the issue, swap is done, no check engine, nor leaks. knock on wood.

BUT, I didnt complete the break-in yet, no time to drive it, and also, when I do, its short trip, so no time to the engine to get to temp to hit it.

soon enough, I need to take few hours to street log it.