68Goatboy

iTrader: (1)

obviously a tune is required to make the most of any mod, but without a tune, would adding higher flow fuel rails and a 5mm larger throttle body to an engine equipped with a MAP sensor create more hp?

(this is for a new gen hemi and there isnt great engine tuning available yet. I know this is the place to ask a question like this though and get a real answer.)

brian_rs/ss

lol your kidding right?


1st off a larger tb does nothing for hp if the intake manifold and intake runners on the heads are not increased in volume/flow as well. so all it will do is give you better throttle response. and even then that's not a guarantee. 2ndly why do you need better fuel rails? the only time you need better rails is if you are stepping up to a better pump and you're actually moving more volume through them. otherwise it's the same concept as the tb, no hp gains, at best you might notice some throttle response.

68Goatboy

iTrader: (1)

in the modern hemi world we're light years behind the lsX crowd when it comes to mods and tuning. there just arent that many people out there trying new things and documenting their results. i figured a more objective or informative answer could be found here.