I have a texas speed stage 2 cam with the 32 percent fuel lobe option. My very basic understanding is this increases fuel. Does it simply enable more flow? Or does it change pressure? I know the ECU controls the high fuel pressure so it should not matter as much in the tune. What I have experienced in my tuning process is changing the SOI injection table made a major power increase from stock. Would that have anything to do with this fuel lobe option?
How did u go about the SOI changes? Dyno tuned them or just added in the areas were the HPFP needed help?
I did a larger lobe as well but in the end the injector is going to flow only as much as it was engineered to do. It may or can help with starvation near the limit if modified and get a little more psi/flow per cycle.SOI/EOI is dependent on individual cam timing if not stock.
Last edited by Ghostnotes; 12-30-2018 at 07:35 AM.
I always tune VVE....
2016 C7 M7 Z51
Callies ultra billet crank
Callies ultra billet rods
Diamond pistons
Jhonson high speed lifters
Ported and polished headwork
Custom cam
YSi-V7
so did you need to change anything in the calibration for the 32% lobe?Originally Posted by Ghostnotes
my guess is no?
when i checked the before and after datalogs; the pressure didnt really change a whole lot. i did receive a little more volume and less inj PW
2016 GenV 2SS twin turbo @20psi
you don't need to change the tune for a fuel lobe
Higgs, thank you for the prompt reply; i hope others find this confirmation useful as well
have a nice weekend
also if anybody wants a good read about fuel pump lash cap measuring there is a good thread on corvette forum from FYREANT
2016 GenV 2SS twin turbo @20psi
Zero,out. SOI
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