Do I need a bigger fuel pump to spray 150 shot?

[True Blue 02]

I need some info on spraying a 150 shot.. Do I need a bigger fuel pump? I will be adding luniti stage 2 high lift cams and upgrading the springs as well in a few weeks.. Any info would be great.. Thanks in advance

 

[CJ04GT]

stock motor? stock fuel pump?

 

[True Blue 02]

Stock bottom end and fuel pump..

 

[khaos]

I spray a 150 shot with a BAP and a good tune. It's a NX wet kit.

 

[True Blue 02]

A BAP? Can you give me some info on that

 

[khaos]

I have an 03 cobra. Kenne Bell makes a " boost a pump" which allows you to boost fuel pump output.

 

[True Blue 02]

Oh ok.. Cool is there a certain one I need or do the only make one? Do they make it for different year models?

 

[flowgoode]

Oh ok.. Cool is there a certain one I need or do the only make one? Do they make it for different year models?

They make 2 versions depending on how many fuel pumps you have.

Boost-A-Pump

 

[TBCobra]

I run a 150 shot on the stock fuel pump. Anything bigger and you probably would need an upgraded fuel pump(s).

I havent given a bap any thought because I really dont know much about them.

 

[flowgoode]

I havent given a bap any thought because I really dont know much about them.

It basically gives your fuel pump a constant 17.5 or 21 volts compared to the stock 12-14 volts. So it makes your fuel pumps flow a lot more than the stock rating.

So say you have a single Walbro 255 LPH pump:

12.0 volts - 206 lph (Normal Car on battery no BAP)
13.5 volts - 257 lph (Normal Car running no BAP)
17.5 volts - 351 lph (Normal 40 amp BAP)
21.0 volts - 440 lph (Race application BAP)

Above numbers found here (pg 13): http://www.kennebell.net/KBWebsite/Common/pdfs/fuelpumptech.pdf

 

[TBCobra]

Thanks for the info.

So it can be used with a stock fuel pump? Will it change the duty cycle at all?

 

[spike_africa]

A SVT Focus pump is a direct easy bolt in and provides plenty of fuel. Its what I use to feed my 125/150shot car.

 

[gnatsumarboc03]

From what I understand, if your spraying a wet shot you should be good, but dry shot maybe extra measures should be taken, but i'm not 100%.

I got a 100 wet shot pulling of the fuel rail. Stock fuel pumps, 60lbs injectors with a boost a pump. I'm new to this whole nitrous thing myself.

Edit: I just realize you got a mustang gt so I'm not sure in your case.