Are f1 diesels mach 4 about the most powerful injector out there for the 12v? Is it worth spending about 600-700 more than it would cost for 370s? Whats the positive or negative of each?

 

12 Valve 4's are not streetable. At all. They also work best with a huge P pump. YOu can get away with a 215 pump.

I need to update the page, the power gain is actually over 100 HP now, but again, they require a ton of support on the pump, line and airflow side to work best.

I suggest a 370 or we hone 370's to get an additional 50 HP. But if you have a small pump like the 160 and 175 size, just install 370's. Bigger injectors wont help much at all with those pumps.

Don~

 

Stright from the horses mouth....cant beat that! haha