tonight i did a WOT run in 3rd and noticed my duty cycle at 82%. i have motron 60s with 58psi with 0 vaccum. this was at 15psi of boost. fuel system is dual 255s -8 feed -6 return. does thsi sound reasonable? also is there any reference to HP that is being made with this much duty cycle on properly setup fuel system?

 

What AFR and how many RPM? My 346 with 60lbs/hr 11.0 AFR and 170kPa and 6000rpm are at 66%

Yours seems a little on the high side, but Im guessing your still a bit rich and you turned the screws to the little 4.8, lol

 

Easy killer, dont pop that thing right away. What AFR and RPM like KB mentioned.

 

interesting, I wouldnt have thought youd be that high on such a little motor..

 

Highest I have seen mine is 78% @ 5700rpm. somewhere around 11psi

 

I ran mine all the way up to 98% when I was running E85 on the 4.8, lol

 

mine are at 110% any how.. have you put a guage on and actually checked the fuel pressure at that rpm? dont really seem right

 

You have 60's at 110% on Gas???????

I was out of fuel pump. added fuel to try to richen it up, went for 92% to 98% IDC but no change in AFR. You got to remember with E85, I was shooting for 7.3 AFR, could only get 8.1

 

60s haha yea NA on gas. no i have just stock ls1 injectors at 65psi. it used be be 95% on my 6.0 now with my 370 its a bit higher. how ever i am actual thinking about converting to e85 though

 

Haha, I didn't think so, that's like 750-800 hp area