Quote:
Originally Posted by steve99
I believe their were some changes to the rocker design and the vavle length and you need to be carefull you match parts. Not aware of any changes to actual cam lobe lift ect, but its possible.
However the vvt cam tables in tunes for all the revisions are almost identical.
If you alter the fuel pressure into the DI injectors then you will alter the fuel delivery. Some E85 tunes do that to increase they fuel delivery by 30% for e85 fuel tunes, the up the DI pressure multiplier in tune tables to up the DI fuel delivery. and the injector scalar for port injection is reduced by 30% to fool the ecu to deliver more fuel?
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Thanks for the reply.
Yes i was aware of the valves and rockers and coil packs..
Someone on here was saying the cams had different amounts of lift, was hoping to get clarification on that.
The other question was really just to satisfy curiosity about the di,
If the engine driven di pump is supplied say 40psi as standard, and we upped the supply pressure to say 45psi, would we see a linear increase in the pressure to the di injectors on the other side of the di pump?
I know these things can be controlled via ecu, just wondering about the mechanics of it all.
