Re: Going for a re-tune.... (updated 5/16/12)
Thanks Nikita! Basically if I utilized both, it is SUPER overkill on the fuel and no need for it. I may keep it and use it at a later date in case I go for more down the road (which I will).... The best part is no modification is necessary. If you go larger than you start getting into a seperate surge tank, braided lines and AN fittings, which can get costly quick.
The good news is, that if I do go that route down the road it won't be hard, a few additional fittings and a long braided line and i'm good to go which is a relief (due to the other limiting factor down the road is the fuel line size and my injector sizes). That, and i'll be able to clean up the fuel area at the top for a cleaner look as well, which is one item on my long LONG list of things to do.
The DeatschWerks 300+ in tank fuel pump will outflow the walbro255 anyday by a substantial amount. So much so that it needs to be wired directly to the battery utilizing a 12g wire, seperate ground and switch. So there is really no need for anything else.
Here is the flow chart for the pump i'm going to be using and you can see the difference:
AFAccord - yeah I didn't think about that either, I always thought it acted as a suction as well pulling the fuel from the tank if needed, but apparently not, especially when I saw the fuel gauge drop under higher RPM's and boost.
On top of that, the stock fuel rail does not flow nearly as well as it should. The fuel enters between cylinder 1/2 and has to feed cylinder 4 and retrack all the way back near cylinder 1 and exit via the fuel pressure regulator. Works great for stock, but not anywhere near where it needs to be when boosted.
With the AEM (or similar) fuel rail, you get the fuel to come in directly at the end of cylinder 4, and exit near the FPR at the other end at cylinder 1. This will allow for not only better fuel flow through all cylinders but better pressure regulation also.
For reference:
Hard to explain but learned a heck of a lot of info about fuel, which I never necessarily thought there was a need to look into or needed to. Apparantly that was a mistake.
