Max hp per injector size?

[lewroe59]

This may be the ultimate in bench tuning, but what would be a good hp guess if 660cc injectors are at 96% @ 20psi? There are some smart guys in here so someone can come up with a #... maybe a hp guess @ 25psi and 880's?

if its possible to do a hp range per inector size chart, that would be cool.

 

[CanadianTSi]

What giant turbo are you running to max out 660's at 20psi???

 

[lewroe59]

just a GT32. I used a wideband to tune so it wasnt too rich.....stock fuel pressure. The duty cycle was 96%.

 

[scottsee]

I have a spreadsheet at home. I'll post it up later tonight..

 

[djpast]

Size MaxHP@43psi @80% duty @100% duty
450cc ~275hp ~345hp
550cc ~336hp ~420hp
660cc ~403hp ~504hp
680cc ~415hp ~519hp
720cc ~440hp ~550hp
780cc ~476hp ~596hp
1000c ~611hp ~763hp
1600c ~977hp ~1222hp

 

[lewroe59]

thanks, but I cant imagine I'm making that much power, I wish I was.

 

[16g-95gsx]

My PTE 880's are at 87% IDC on pump gas and 24psi. DSMlink reads around 380awhp, and 46lb/min. My PLX wideband logs 10.5:1 AF for those figures at 43psi base pressure.

Max HP will be entirely based on fuel pressure, fuel used, and AF ratio ran.

 

[djpast]

doh i knew i forgot to add that in there. the above were made with a assumption of 11:1 a/f ratio.

 

[Batty200]

Size MaxHP@43psi @80% duty @100% duty
450cc ~275hp ~345hp
550cc ~336hp ~420hp
660cc ~403hp ~504hp
680cc ~415hp ~519hp
720cc ~440hp ~550hp
780cc ~476hp ~596hp
1000c ~611hp ~763hp
1600c ~977hp ~1222hp

Then at 12:1 A/F the chart would read like this:

450cc 300 and 375
550cc 366 and 458
660cc 440 and 550
680cc 453 and 566
720cc 480 and 600
780cc 520 and 650
1000cc 667 and 832
1600cc 1066 and 1333

Sorta seems to agree with my statement that 450cc will support 300whp.


Later