Guess my WHP
02-17-2010, 08:26 PM
#41
440s can't flow enough for 300whp. They'll hit 100% DC before coming close to the 300whp mark. I was on 550cc injectors, with a stock fuel pump, and had plenty of DC left in the injectors, and my fuel pump never showed signs of starvation. I could have run 10:1 @ 13psi all day long and the fuel pump would have kept up.
had a guy run 74% duty cycle @ 10psi (550cc, t3/t4b TT speacial)
after fixing boost leaks= 90% duty cycle @ 10psi after retuning
long story short you can use a mbc to raise boost pressure to desired level but that doesnt mean you get the flow.
In other words i can run stock injectors at prolly 80% dc and push it to 8-10psi with that same turbo if leaks are present. If no leaks then yeah were talking well over 80%.
when i say leaks i mean boost leaks.
think about it this way of how two dissimilar turbos can make the same psi but not the same amount air flow through them.
02-17-2010, 08:38 PM
#43
Senior Member
SL Member
Join Date: Apr 2008
Location: Orlando, FL
Posts: 4,156
Yup but you were also stuck at 43 psi fuel pressure 
Remember fuel return setup has couple of plus's!
More volume of fuel.
Equal flow of fuel to all injectors
1:1 rising rate FP , So if base is 50-55 psi then you goto 10 psi its now 60-65 psi of fuel pressure..
Pump gas in your car, squeze pump only half way, then goto 100% same size nozzle and hose..
But much more gas
Remember fuel return setup has couple of plus's!
More volume of fuel.
Equal flow of fuel to all injectors
1:1 rising rate FP , So if base is 50-55 psi then you goto 10 psi its now 60-65 psi of fuel pressure..
Pump gas in your car, squeze pump only half way, then goto 100% same size nozzle and hose..
But much more gas
02-17-2010, 08:48 PM
#44
02-17-2010, 09:28 PM
#49
Senior Member
SL Member
Thread Starter
Join Date: Jul 2007
Location: Milwaukee Wisconsin USA
Posts: 627
So 550s should get to 12 psi but with 630s would would be good to have a new fuel pump?
also do any of you guys know of a good boost controller that wont allow to much boost creep? Id love to be able to set psi amount per gear like all the hondata boys lol
also do any of you guys know of a good boost controller that wont allow to much boost creep? Id love to be able to set psi amount per gear like all the hondata boys lol
02-17-2010, 09:38 PM
#50
Senior Member
teamNJCT
Fresh Crew
SL Member
iTrader: (1)
Join Date: Mar 2007
Location: Parsippany, NJ
Posts: 16,645
Ah, gotcha.
Absolutely love it. Trying my hardest to avoid modifying it. TBE, Accesport and RPF1s possibly coming for the summer though
.
Absolutely love it. Trying my hardest to avoid modifying it. TBE, Accesport and RPF1s possibly coming for the summer though
.
Last edited by CarbonXe; 02-17-2010 at 10:24 PM.
02-18-2010, 01:11 AM
#51
lol...hard isnt it?!!! wish ya the best of luck bra. also would like to see some dyno vids or hell even some track vids of it if possible!
02-18-2010, 01:13 AM
#52
imho both would gain something with the fuel pump but it may not be much.
02-18-2010, 01:27 AM
#53
Banned
SL Member
Join Date: Nov 2007
Location: Germantown, MD
Posts: 2,893
anyways boost controllers dont cause creep they cause spiking... ive heard the nxs motorsport boost controllers on ebay dont spike and are reliable....but id stick with hallman its gauranteed to be perfect
02-18-2010, 02:01 PM
#57
^^ true, thats why im not really worried with trueboost not having an all flat boost level..
but its not all about the controller, proper combination of wg size, dump design, manifold design, turbo size and boost level are important when you are after an all consistent boost
but its not all about the controller, proper combination of wg size, dump design, manifold design, turbo size and boost level are important when you are after an all consistent boost
02-18-2010, 02:06 PM
#58
Banned
SL Member
Join Date: Nov 2007
Location: Germantown, MD
Posts: 2,893
^^ correct again..i believe this third page is full of win! btw travis your setup probably was spiking due to it being a 16g they are known to have a spike, but also for dsms they are known to creep... food for thought
02-18-2010, 02:08 PM
#59
Senior Member
teamNJCT
Fresh Crew
SL Member
iTrader: (1)
Join Date: Mar 2007
Location: Parsippany, NJ
Posts: 16,645
^^ true, thats why im not really worried with trueboost not having an all flat boost level..
but its not all about the controller, proper combination of wg size, dump design, manifold design, turbo size and boost level are important when you are after an all consistent boost
but its not all about the controller, proper combination of wg size, dump design, manifold design, turbo size and boost level are important when you are after an all consistent boost
:D