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Corvette
C4 Forum
Thinking of installing shorty Headers on my 87. Will I pick up some HP or I'm I wasting my time.
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<blockquote data-quote="JS4FN" data-source="post: 263449" data-attributes="member: 5913"><p>Performance chip is good, they bump up your timing and fuel at wide open throttle so premium fuel is needed. 24 lb injectors are not needed. TPI only makes power to 5000 rpm, if you change your intake to a miniram or similar with a cam the rpm jumps significantly that’s when you would need larger injectors. Rpm is horsepower that’s why Tuned port injection specialists advertise there miniram intake to gain as much as 100 hp over the stock tpi. I’ve used them a lot. They work. </p><p>If you can find large tube runners grab them they help but the miniram is king for tpi.</p></blockquote><p></p>
[QUOTE="JS4FN, post: 263449, member: 5913"] Performance chip is good, they bump up your timing and fuel at wide open throttle so premium fuel is needed. 24 lb injectors are not needed. TPI only makes power to 5000 rpm, if you change your intake to a miniram or similar with a cam the rpm jumps significantly that’s when you would need larger injectors. Rpm is horsepower that’s why Tuned port injection specialists advertise there miniram intake to gain as much as 100 hp over the stock tpi. I’ve used them a lot. They work. If you can find large tube runners grab them they help but the miniram is king for tpi. [/QUOTE]
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Corvette
C4 Forum
Thinking of installing shorty Headers on my 87. Will I pick up some HP or I'm I wasting my time.
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