StarletRick
Fresh Recruit
there is a guy running 28 psi on a ct9, and apparently it isnt hybridised. but it wouldnt be efficient.
it isnt about boost, its about air flow. alot of people get confused by that. just because you run high boost doesnt mean that youll make big power. engines are a big air pump, and the more air you can flow, determines the power, and pressure (boost) is the side effect of that flow. for example, a ct9 running 1.2bar will make circa 160-180hp depending on other mods. a td05 running 1.2bar will make alot more power than this at the same pressure because it is flowing alot more air even though the pressures are the same.
this is all measured in compressor maps. i wont go into it on here as i could type forever. but each compressor has a map of how much air it will flow at a given RPM. to determine the engine flow compared to the compressor rpm you then choose an exhaust impellor to match it. strapping a monster compressor on a small hot side sounds ideal, fast spool, loads of boost. but in reality youll have trouble controlling the boost and end up with a really unstable setup prone to serious spikes. its a fine line between managable boost and flow efficiency. its quite a tricky science matching up the right size turbo to the engine. and its all guesswork in the 4e as i dont think ive ever seen a proper bench flowed result for the block and head to allow a proper turbo matching.
and gee, you basically summed it up there. you will squeeze more power out of a 5e, but not tons, and in doing so you are causing reliability issues over the 4e.
and yea, im running 5e.
it isnt about boost, its about air flow. alot of people get confused by that. just because you run high boost doesnt mean that youll make big power. engines are a big air pump, and the more air you can flow, determines the power, and pressure (boost) is the side effect of that flow. for example, a ct9 running 1.2bar will make circa 160-180hp depending on other mods. a td05 running 1.2bar will make alot more power than this at the same pressure because it is flowing alot more air even though the pressures are the same.
this is all measured in compressor maps. i wont go into it on here as i could type forever. but each compressor has a map of how much air it will flow at a given RPM. to determine the engine flow compared to the compressor rpm you then choose an exhaust impellor to match it. strapping a monster compressor on a small hot side sounds ideal, fast spool, loads of boost. but in reality youll have trouble controlling the boost and end up with a really unstable setup prone to serious spikes. its a fine line between managable boost and flow efficiency. its quite a tricky science matching up the right size turbo to the engine. and its all guesswork in the 4e as i dont think ive ever seen a proper bench flowed result for the block and head to allow a proper turbo matching.
and gee, you basically summed it up there. you will squeeze more power out of a 5e, but not tons, and in doing so you are causing reliability issues over the 4e.
and yea, im running 5e.
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