Fueling & Injection - What size injectors and fuel pump for MS4 and 125 shot




4U2BNVS
01-03-2007, 12:35 AM
I have a MS4 and was wondering what size injectors I would need for a MS4 and 125 shot. Also should I buy a racetronix fuel pump set-up or a 255 Walbro.

Thanks for any help


EPP
01-03-2007, 05:30 AM
I would go with the Racetronix fuel pump and 60lb injectors, which will be more than enough injector, and are very tuneable. http://www.exoticperformanceplus.com/performance_parts/index.html?item=583 Bob

erikthegoalie
01-03-2007, 07:23 AM
would he be ok with 42 LB injectors as well?


Frost
01-03-2007, 10:41 AM
Who knows.... you didn't bother to post whether that was a wet or dry hit.

HAMRHEAD
01-03-2007, 10:58 AM
Who knows.... you didn't bother to post whether that was a wet or dry hit.
Exactly! If it is a wet shot the pump will supply the needed fuel to the fuel solenoid. If it is a wet kit you can use 30# injectors and a Walbro 255. 42# or 60# injectors will leave you room to grow though.

4U2BNVS
01-03-2007, 07:45 PM
Sorry guys it is gonna be a wet 125 shot.