How Much Real RWHP Gain - Mustang Evolution

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Old 05-18-2013, 03:03 PM   #1
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How Much Real RWHP Gain

I have a 2013 5.0.

How much wheel horsepower gain have you guys actually received from the Boss Manifold, long tubes, or a cat delete?

I know they "claim" a 25 to 30 wheel HP increase for each of the three above.
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Old 05-18-2013, 03:17 PM   #2
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More like 30 total
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Old 05-18-2013, 03:35 PM   #3
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Quote:
Originally Posted by helloWorld View Post
I have a 2013 5.0.

How much wheel horsepower gain have you guys actually received from the Boss Manifold, long tubes, or a cat delete?

I know they "claim" a 25 to 30 wheel HP increase for each of the three above.
For all three my friend and his 5.0 gained around 49-52RWHP
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Old 05-18-2013, 03:38 PM   #4
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Dependent on the tune.
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Old 05-18-2013, 05:10 PM   #5
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I gained over 60rwhp with a boss IM, CAI, ORX, resonator delete, flowmasters, and a tune.

---------- Post added at 06:10 PM ---------- Previous post was at 06:10 PM ----------

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Dependent on the tune.
+1^
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Old 05-18-2013, 05:26 PM   #6
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Most stock 5.0s baseline from 365-375hp depending on conditions. I've seen about 20+ 5.0s with the mods listed put down 425-440hp. So I would say you could get 50-60rwhp with all combined, but that power is made upwards of 7300rpms. Power under the curve is where you notice the difference and id say it makes for a significant difference there. On average, above 3000rpm you'll be 10-20rwhp above baseline and nearly 30rwhp more at the stock redline. After you pass up the 7k limit max horsepower increases exponentially.
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Old 05-18-2013, 05:35 PM   #7
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Most stock 5.0s baseline from 365-375hp depending on conditions. I've seen about 20+ 5.0s with the mods listed put down 425-440hp. So I would say you could get 50-60rwhp with all combined, but that power is made upwards of 7300rpms. Power under the curve is where you notice the difference and id say it makes for a significant difference there. On average, above 3000rpm you'll be 10-20rwhp above baseline and nearly 30rwhp more at the stock redline. After you pass up the 7k limit max horsepower increases exponentially.
My redline is at 7300rpm and I'm done making power at 6800-7000rpm. I baselined at 380rwhp with 3.55's and made 441rwhp, same day and same conditions. And 446 another day with a revised tune and 3.73's. I never lost any power or torque across the entire rpm range either. My tuner says, and he has been doing this for almost 20 years, that its pointless and unsafe to rev these motors over 7200rpms. And the boss IM can still be taken advantage of in the 4000-7000 rpm range. And I have proof. The guy is the industries best kept secret, he is a mad scientist when it comes to tuning.
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Old 05-18-2013, 05:53 PM   #8
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My redline is at 7300rpm and I'm done making power at 6800-7000rpm. I baselined at 380rwhp with 3.55's and made 441rwhp, same day and same conditions. And 446 another day with a revised tune and 3.73's. I never lost any power or torque across the entire rpm range either. My tuner says, and he has been doing this for almost 20 years, that its pointless and unsafe to rev these motors over 7200rpms. And the boss IM can still be taken advantage of in the 4000-7000 rpm range. And I have proof. The guy is the industries best kept secret, he is a mad scientist when it comes to tuning.
Your car probably uses some aggressive timing maps. Also, 380rwhp is pretty damn good for a stock 5.0! I've seen 400rwhp on a tune and axleback only car and I've seen 440rwhp with all those mods. Then again, I'm in south Texas and its hot and humid! Ive seen hp losses from re-gearing cars before, but that could have been variable dependent also... Who knows? Every car is different no matter how you do it, and different dynos say and do different things. We had a 76mm turbo'ed ZR1 put down 888rwhp on one dyno and then 865( same set-up) on a different dyno.

I agree with your tuner about the 7k limit, however, these engines were designed to handle high rpms more than any v8 ford has put out. I've seen a couple aluminator motors make it over 8k rpms and still making power! The stock motor would be bits and pieces by then, but the engineering is there.
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Old 05-19-2013, 07:56 AM   #9
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Quote:
Originally Posted by ZLwhat View Post
Your car probably uses some aggressive timing maps. Also, 380rwhp is pretty damn good for a stock 5.0! I've seen 400rwhp on a tune and axleback only car and I've seen 440rwhp with all those mods. Then again, I'm in south Texas and its hot and humid! Ive seen hp losses from re-gearing cars before, but that could have been variable dependent also... Who knows? Every car is different no matter how you do it, and different dynos say and do different things. We had a 76mm turbo'ed ZR1 put down 888rwhp on one dyno and then 865( same set-up) on a different dyno.

I agree with your tuner about the 7k limit, however, these engines were designed to handle high rpms more than any v8 ford has put out. I've seen a couple aluminator motors make it over 8k rpms and still making power! The stock motor would be bits and pieces by then, but the engineering is there.
I agree with this. There are soo many different variables, the same dyno the next day may make show different power with the same car. Its not always what your HP says.... its what times say. Get base track times whether road course or drag racing. Then you'll know the gain from your new parts.
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Old 05-20-2013, 01:48 PM   #10
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I made 366 stock on a mustang dyno. Same day added boss mani, LTs, catted h, dyno tune, steeda cai, already had axlebacks, made 418 at 7600 rpm but peak tq stayed the same at 341. It did give about 15 more tq throughout the curve and reached peak sooner + held it longer. And hp only went up about 7 through curve until 5500 rpm.
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