whats up guys? so whats the best way to get the most out of our tpi fuel rails, does anyone make any good aftermarket ones, or has anyone made there own?

i have the following engine combination
engine rotating assembly, cam and heads are factory 305 (i know, i know ill explane later)
ebay twin to4e turbo non intercooled set on 6 psi
42 lb injectors
bbk adjustable fuel pressure regulator
stock fuel line( in the processes of ordering 12an pressure and return)
stock pump( in the proses of ordering 2 warbors 465 i think)
fast sportsman engine management system with timing control
its drinking E85

now why i am doing a 305, is because i want to learn to tune because i have a really nice all forged 383 built ready to go with out an intake and i just love the looks of the tuned port set up and above all it all fits under my stock hood!
my last data log i was at 6 psi of boost and 20 psi of fuel when my afpr was cranked to a base of 55
i also know the poor ole to4es aint gonna cut it on the 383 and neather are the 42 lb injectors, ill have a lota parts for sale then that day rolls around

thx guys

 

 

iim thinking that im going copy this setup, y the pumps together in the tank feed the rails then use areomotive fpr and dump it.i want to run 10 an feed line and 8 an return.
as far as making the rails i found a drill bit for doing rails but its $125
http://www.rossmachineracing.com/injectortool.html

i know the tpi aint gonna flow the greatest, im probblay going to get a tpis mini ran when i put in my 383, in that case i can cave money by not buying the fuel fail kit witch saves like $300 and if my rails dont fit i guess ill have a nice drill bit to make another set

 

 

Running them in parallel instead of like stock, in series, is the way to go with higher fuel needs. It's certainly been done by modding the stockers like you're doing. I looked into it for my N/A 383 but ultimately concluded it wasn't necessary for my needs.

The ONLY thing you may run into is a fuel pressure pulse if you run batch fire with the FAST system (or any EFI system) I was advised to run a paired injector strategy which fires 2 injectors every 90 degrees. It doesn't have the tuning benefits of a sequential ignition, but it can help with that fuel pressure pulsing. I highly doubt MY set up really mattered, but on a boosted application I'd imagine it'd be more of an issue. I dunno, something to look into anyhow.

EDIT - Forgot to mention - Obviously this all depends on your fuel needs and fuel rail volume, but if you go aftermarket rails, they typical have a higher volume (think plenum) so each injector event pulls less overall percentage of fuel rail volume...if that makes sense. With smaller stock rails, big injectors can deplete fuel volume and that's where you get that pressure pulse. ....that's not to say YOU will have that problem, but that's the overall general theory. There's a good bit about it over on the Holley forums. (I'm running a Holley HP, so I frequent that page).