What size injectors and fuel pump for Fp Big T28

[99GST]

I was planning on getting the Walbro 190lph and 550 cc injectors. This is for a FP BIG T28. I run 93 octance all day everyday, and will most likey run about 18-20lbs, if permissible.

Do you think the 190 is enough, or should I bump to the 255? I really dont want to mess with an FPR.

Just curious as to some peoples thoughts.

Thanks.

 

[airbrat]

go with the 255. This way should you ever upgrade further down the road you're good to go. The price difference is negligible.

The 550's are just fine. They will support up to 400HP if I remember correctly.

 

[AWDkitkat]

what you have is fine.
If you ever plan on going bigger than a 20g get a 255

 

[99GST]

Excellent.

Thanks for the response guys.
I am ordering my stuff here tomorrow.

I will installing them both here next week.

Later.
Nathan

 

[RuBiCaNT5X]

Originally posted by AWDkitkat
what you have is fine.
If you ever plan on going bigger than a 20g get a 255

Doesn't the 255lph require a fuel pressure regulator as well where the 190 doesn't...

 

[AWDkitkat]

nope. its nice to have one but it is not a requirment. I dont use one and never have. matter of fact out of the 5 or so local DSM's that run a 255 none of us have one. these cars hp run anywhere from 300-500 hp. We all DO use a SAFC though.

 

[FourG63 97GST]

Originally posted by 99GST
Excellent.

I am ordering my stuff here tomorrow.

I will installing them both here next week.

Later.
Nathan

Where are you ordering them from, I'm looking around for prices on that same setup.

 

[Rob]

Go with the 190 walbo no fuel presure regulator needed and the rc 550s for your set up its all you need that what i have for a set up with my Agp T28.

 

[20gst]

Yoy need at least a 625cc injector to 660s on a warlboro 255iph pump ... 550cc will work but the response of the above along with proper a/f adjustments is the way to stay in correct tune at all powerbands.

 

[candela]

WTF are you talking about 20gst?

 

[candela]

WTF are you talking about 20gst?

 

[GSXTCY]

I am using RC 550's with a Walbro 255 and a SAFC on my AGP T28!

 

[larryd]

THREAD MOVED

Please keep fuel related threads in the fuel tuning forum

 

[20gst]

wtf are you talking about !

 

[larryd]

what does it look like im talking about, the thread was posted in 2.0 turbo discussion, i moved it.. what dont you get?

 

[SPEEDY]

I currently run a walbro 255 fp with RC 550 injectors along with my ported FP Big28. Although I'm sure I need a AFPR from what the word is about the base fuel pressure rising, and the fuel curve not being as linear, but my car still runs very strong without a AFPR at 20 to 22 psi of boost. There have been people running walbro 255 fp's for years without an AFPR and putting up kick ass numbers toboot. I have read other comments that you can tune it out some, and make the fuel curve a little more linear with a S-AFC. I guess I'm going to stick with mine for the time being. Besides I'm not to worried about losing a whopping 5 crank hp, if even that, by not going to one.