ok guys i have like an all stock 01 cummins and i am wanting to be able to put twins on it. i was thinking a s400 with my stock hy35 would work nice. I have an idea of what i need to do but i just want to be sure i do it all right as i am doing this by myself. So a list of what i need to make the twins and what i need to put on my truck so i dont blow any thing up would be really nice.

thanks
John

 

twins are great but will do you no good with out fuel i have my turbo rigged up for more boost and faster spool but when my truck has stock fuel it well not run any faster with the better turbo. so fuel must be added or you will be very disapointed withthe setup.

 

What he said. You need a decent amount of fuel to spool up compound turbos.

 

Thanks guys! So does that also means I'll need to head studs to right?

 

Yes especially with twins... But I think you are far from needing twins with a stock truck!