I searched a lot, but could not find very good info.

I am wondering if you guys are running 42# injectors on a stock pump?
Up to 100% IDC?

Is the walbro drop in only good for more volume? or more pressure also?

I read 62psi walbro and 58 stock?

Unsure of the accuracy though.

TIA

 

I'm using the 44# injectors @ 58PSI. On the dyno @ 508rwhp the injector duty cycle hit about 85%. This was with the stock fuel pump. I don't understand why so many have added a second or bigger pump. I monitored pressure with a digital Autometer guage and have never seen the pressure drop. I have added an inline walbro now but it is for a 275 hp shot of nitrous that I'm goint to try here pretty soon

I think most setups will run fine on the stock pump and 44# injectors.

 

I have a Walbro 255lph intank and I pushed 43lb injectors over 100% with no issues and am now using it to feed my 72lb injectors @ 65% duty cycle.

 

Thanks guys.
Bought some 42#s and fixin to run e85.