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How much HP gain?

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Old Dec 22, 2017 | 06:12 PM
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Blvdbrawler's Avatar
Blvdbrawler
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Melting Slicks
 
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Default How much HP gain?

Merry Christmas everyone!

So I think I want to do a few more mods this early spring and was wondering if anybody has the same set up and what kind of HP gains/total HP I could possibly expect?

I have a 2015 Z06 M7
Currently have Halltech CAI and Ram Air (Actually Love it!)
Corsa Extreme Cat Back
Corsa off road X-Pipe

Spring Mods:
Tune
Long Tube Headers
Lower Pully

Not too exciting but nonetheless something. Can anybody offer some insight? Is it worth doing? should I consider doing something else or something a little more additional? What kind of gains and or total HP? Thanks guys! Ohh Rah!
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Old Dec 23, 2017 | 02:54 AM
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Bill Dearborn's Avatar
Bill Dearborn
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What is the purpose of the mods? What do you want to do with the car after you make the mods? If it is to drive to the cruise in and talk about how great it is it really doesn't matter what you accomplish. If you want to drag race the car then you should make sure the mods benefit you in being successful. If you are going to be doing HPDEs then the mods should let you run those without incident or without actually slowing the car Vs making it faster. Not all mods that show higher peak HP actually benefit a car on a road course since it is more about the spread of the power under the curve Vs the peak.

For instance, last year I instructed a student that was driving a Mustang that was set up for drag racing. It had a high ratio diff, a lot of power adding engine mods that made the engine very peaky with a very snappish throttle response. Worked great heading down the straight but the car was terrible driving in the corners. The snappy throttle and high rear axle ratio meant the driver couldn't apply power smoothly coming out of a corner. Just a touch on the throttle as he came off the brake and the car would lunge forward even though it wasn't all the way through the corner. Stock Mustangs would drive away from him at corner exit since he wasn't able to smooth out throttle application. He had dyno sheets showing huge peak power output but the car didn't go.

Bill
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