i just had a quick question about the Walbro Fuel Pump. i'm gonna install my Hallman Pro RX MBC when i get my AMS FMIC which will be within the next 2 weeks. i was wondering if it would be okay to install the Walbro 255 Fuel Pump if i dont have the MBC installed.

 

Yes

 

dont you need a tune tho when you install the walbro

 

no

 

as long as you are running the stock injectors and fpr, all the walboro does is gaurantee you have more than enough fuel.

Change the fpr and the amount of fuel going to the injectors, then you need to tune.

 

thanks man. i'm gonna get a tune as soon as i get my camshafts, mbc, and ams fmic installed. hopefully it's all done by next month!

 

Wait to get it tuned after the cams. You will see a big diffrence

 

If you have an 8, then it would be suggested to get it trimmed up...the 9's really doesn't change much since they have a larger capacity pump from the factory, and it only richens it up a hair.

 

all responses answered your question. thread closed