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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="VikingTrad3r" data-source="post: 263922" data-attributes="member: 2229"><p>Full free flowing exhaust *will* yield hp yes. </p><p></p><p>the L98 shorties are terribly tiny and while they are technically are shorties they are very restrictive. i suspect that a set of open freeflowing shorties would actually yield some hp but were not talking crazy amounts. </p><p></p><p>as another poster has mentioned the “tuned” part (length ofvthe runners basically) of the Tune Port Injection makes it very hard for the engine to draw more air in itself over 4700 ish rpm</p><p></p><p>my recommendation is a good open free flowing exhaust. id spend the money on corsa mufflers, due to thier proprietary anto drone frequency cancellation. id love to recommend flowmasters or magnaflow but the drone will drive you nutz on long drives. </p><p></p><p>there are a few great posts on CF about how to get more hp from a tpi. focus on adding more torque, use the fact that the tpi is higher torque (not by much but slightly) down low. free up exhaust flow, your 113 heads perfectly fine *even as a racecar* you simply syay in the powerband where you have all your torque. </p><p></p><p>i prefer the superram over the miniram. </p><p></p><p>here is a video of an amateur racer isi g the tpi. 100% factory. no porting. open free exhaust and ofcourse plenty of weight reduction in the car. but the TPI does just fine and in fact whoops almost every competitor. </p><p></p><p>no need for a fancy chip, but if you go in knowing and understanding that what you are getting is a bit of extra timing and a fan that comes on earlier....go for it. </p><p></p><p>if you are in a racing environment its different. you would work with. a tuner looking for maximum everything. street car, meh. </p><p></p><p>[MEDIA=youtube]e2ArDtXf1ZI[/MEDIA]</p></blockquote><p></p>
[QUOTE="VikingTrad3r, post: 263922, member: 2229"] Full free flowing exhaust *will* yield hp yes. the L98 shorties are terribly tiny and while they are technically are shorties they are very restrictive. i suspect that a set of open freeflowing shorties would actually yield some hp but were not talking crazy amounts. as another poster has mentioned the “tuned” part (length ofvthe runners basically) of the Tune Port Injection makes it very hard for the engine to draw more air in itself over 4700 ish rpm my recommendation is a good open free flowing exhaust. id spend the money on corsa mufflers, due to thier proprietary anto drone frequency cancellation. id love to recommend flowmasters or magnaflow but the drone will drive you nutz on long drives. there are a few great posts on CF about how to get more hp from a tpi. focus on adding more torque, use the fact that the tpi is higher torque (not by much but slightly) down low. free up exhaust flow, your 113 heads perfectly fine *even as a racecar* you simply syay in the powerband where you have all your torque. i prefer the superram over the miniram. here is a video of an amateur racer isi g the tpi. 100% factory. no porting. open free exhaust and ofcourse plenty of weight reduction in the car. but the TPI does just fine and in fact whoops almost every competitor. no need for a fancy chip, but if you go in knowing and understanding that what you are getting is a bit of extra timing and a fan that comes on earlier....go for it. if you are in a racing environment its different. you would work with. a tuner looking for maximum everything. street car, meh. [MEDIA=youtube]e2ArDtXf1ZI[/MEDIA] [/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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