Camaro9969

iTrader: (12)

How much timing was that?? Seems low HP. 80s will make over 700 no problem

ronnieforrester

iTrader: (3)

i didn't ask about the timing- he did comment it was safe.

but adding more timing may have yielded more HP but more HP requires more fuel right -and if im already at 90% DC


the car did spin on the dyno so not sure if that cost much HP.



Jacking the fuel pressure up to 60 will affect the tune and require a retune.

ronnieforrester

iTrader: (3)

ive followed your builds and like them a lot- I regret going with HP tuners and wish i would have gone MS now but I already bought the harness, pcm etc for my swap.



What pumps and fuel pressure did you make the 697 at ?


im *** deep into HP credits and dyno time but may make the switch to the the MS3 later.

I saw you post that they were working on a direct fit lsx application.

BLINGOLE

iTrader: (5)

+131343513

i made 811rwhp threw a th400 and 9inch at 110% duty on e85.

ronnieforrester

iTrader: (3)

pumps/fuel pressure ?

Blackpanther99

iTrader: (8)

Amazing. As posted above what pump/s?

boss79z

iTrader: (1)

Car was boost creeping. It made 605 rwhp at 5600 on a mustang dyno. We shut it down because of the creep. Stock bottom end also.

pyro719

iTrader: (5)

What Pumps Were you using? I'm starting from scratch on my car. The build will be stock ls1, magnum 80mm turbo, and e85 through a th400. Will 80lb ijectors be enough for this setup on kill?

slowlsx

iTrader: (28)

what about 2 255's with -8 feed and 160lb injectors on E85??

Couldnt you lower the Fuel pressure to allow the fuel pumps to have more volume?

Forcefed86

iTrader: (4)

From what I’ve read you need 35psi minimum to get a decent spray pattern on the injectors. The more pressure the better the pattern/atomization of the fuel.

Honestly with the new badass 450lph e85 walbros I don’t see why people are still using the 255lph pumps.

Going by my experience with 120lbers I don't think 160's would idle well, even with E85. My idle is bearable, but I can’t get the pulse width high enough to get a great idle. Going by my DC numbers 120’s should support 1000+ on E85 at reasonable pressures.

I run:

40psi base pressure. (20lbs of boost)
magnafuel 750protuner pump (loud bastard!)
1/2 feed lines and OEM fuel rail
120lb injectors (low-z with AEM driver box)
E85
Logs showing 55% DC at right around 700whp (going by weight/trap speed)

denmah

iTrader: (2)

i did 711rwhp with e85 and 80lb injectors at 58psi base

skinnies

iTrader: (33)

I've been 159mph at 3340lbs on street tires on 80lb injectors with ~100 psi fuel pressure.

pyro719

iTrader: (5)

What will the stock lines and rails support on e85? Thinking of going 80 # Deka injectors dual Walbro 255's stock feed line 1/1 fuel pressure regulator and use the evap line for the return line. Think that will support 800 rwhp?

stock48

iTrader: (17)

Went 157.5 mph at 3350 lbs with 83's at 75 base psi.

smokeshow

iTrader: (17)

Made over 700hp with my old 4.8 on 20psi... Dual walbro 255s, SD60s (73lb/hr at 58psi) and 50% e85. Top of the gear around 6400rpm was 90% IDC. 700hp on 100% e85 with 80s will be no issue...

pyro719

iTrader: (5)

Ok Cool So the 80's should be good for the power I want to make. How about the stock 2002 ls1 rails and fuel lines?

denmah

iTrader: (2)

sorry guys!
i had a magnafuel protuner 750 the 2000hp+ fuel pump at the time, but that was defiantly overkill

skinnies

iTrader: (33)

Fuel rails/lines will be good for 850rwhp, you just have to add a good regulator before the rails and can use factory evap line for return.

denmah

iTrader: (2)

stock truck regulator will return pretty much anything you can throw at it also

Forcefed86

iTrader: (4)

Are the OEM fuel supply lines 3/8" ID? Never actually owned an LS chassis...