I am making 320 whp right now and in the future too. Curretly I am using the stock fuel pump with 600 cc injectors and AEM FPR.
Other FI set up that make less power such as Comptech SC Vortech SC use 225LPH pumps. Lovefab turbo kit uses too. This make me wonder if my fuel pump is working near to the limit and could fail in long trips or at circuit, in this circuntances is a must install a bigger pump? I have rear stock pump can handle 400 WHP



Thx



Juan

 

Taken from AEMs EFI basics PDF....

The equations to determine your fuel requirement is as follows:

 

thanks and next question which is the stock fuel capacity?

 

The stock pump is 190lph

 

Does this mean that the stock fuel pump is good for a mildly boost 300WHP (360hp) ?

 

Summarizing.. I do not need a bigger fuel pump.



Thx you guys



Trip, According to those calculation, you should not, but if comptech kit comes with it I would install it


Juan

 

it is installed in place already, but it could save some whining

 

If the stocker is a 190LHP unit, then using my math I come up to around 450hp at the crank, or 380whp figuring 15% drivetrain loss. That's with the 30% safety factor added in. I may pull out my Walbro knowing this, that whinning is getting on my nerves

 

If you are still running the FMU I wouldn't change it . The higher flowing fuel pump is need to sustain the 90psi that the FMU raises the fuel pressure to under boost . If you are running stock fuel pressure and bigger injectors than I would say go for it .

 

If you are willing to fit a external inline pump then the Weldon 600A are fantastic. Very quiet and will flow enough for 600+BHP. Currently using one in my F20C powered kit car and have found it to be the best pump I have ever come across.

http://www.weldonracing.com/600aflowthru.html