Muffler Delete Dyno - ModernCamaro.com - 5th Generation Camaro Enthusiasts
V8 Engine Discussion 6.2L LS3/L99 V8 | Exhaust | Ignition | Induction | Intakes

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post #1 of 11 Old 07-13-2009, 10:33 AM Thread Starter
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Muffler Delete Dyno

Does anyone have Dynos befor and after a muffler delete?

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post #2 of 11 Old 07-13-2009, 09:46 PM
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i dynoed my car(LS3) last thursday. the car was completly stock except for the muff. delete. it was 8:30pm, 75% humidity, 85.5*f. it was VERY humid, as it gets to about 99*f during the day here with a heat index of almost 110*f. 870 miles on the car, no fans blowing on it at all. It made 354hp and 354lbfttq. the guys said the delete in noway hurt the #s. i will post the sheets and link to the vid as soon as i get them. Remember it was VERY humid and HOT even at 8:30 pm.

here is the shop it was done at, they are LS experts. next i will dyno it with the CAI on and a tune!

http://www.raginracin.com/Project_Vehicles.php

btw- they designed the first 2010 camaro cam that was sent to REDLINE MOTORSPORTS(howard)


heres the vids
http://www.youtube.com/watch?v=2uyUpEeJ6Jw
http://www.youtube.com/watch?v=WcrwbYWZxHw
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post #3 of 11 Old 07-13-2009, 10:07 PM
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Didn't hurt it but nothing is gained either right?

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post #4 of 11 Old 07-14-2009, 08:24 AM
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Quote:
Originally Posted by FranknBeans View Post
Didn't hurt it but nothing is gained either right?
not sure, did not dyno it before the muff. delete, but it sure did'nt hurt it

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post #5 of 11 Old 07-14-2009, 10:55 AM Thread Starter
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Quote:
Originally Posted by 66chevy View Post
not sure, did not dyno it before the muff. delete, but it sure did'nt hurt it
Im sure it didnt hurt, I just wish some one had befor and after dynos... If I had the spare cash Id do it my self lol but Just buying the camaro then closing on a house at the end of the month I dont have the money to do it.

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post #6 of 11 Old 07-14-2009, 09:28 PM
 
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I have heard different accounts from people who have done the delete. One guy said that he gained 17HP at the wheels but many others have said that they lost some HP due to a lack of back pressure.
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post #7 of 11 Old 07-15-2009, 09:12 AM
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Technically, you should lose a little torque, but gain top-end HP when you reduce backpressure...

-2010 SS in Jewel Red
-Exhaust Mod - No Mufflers
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post #8 of 11 Old 07-15-2009, 03:04 PM
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Lorcin and Selena did a dyno before and will be doing one after, I think.

They had REAL good numbers before.

We will see after.

They have stickers too, so am excited!

2005 CTSV BLACK LS7 Clutch/Flywheel/Slave, Tick Speed Bleeder, Tilton Clutch MC, RevShift Bushings, Domestic V8 Solutions (shifter, 8.8 Diff conversion, srut tower braces, sub-frame connectors), SLP cats, no cags, xpipe, bullet mufflers, Volante, iPod dock, G-force tune; 379hp 381tq.

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post #9 of 11 Old 07-15-2009, 03:06 PM
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Quote:
Originally Posted by tomato View Post
Technically, you should lose a little torque, but gain top-end HP when you reduce backpressure...
Yes, but with mufflers, at the end of the exhaust I think it will be no loss at all.

I am probably wrong, but I think there will be less loss than if the mufflers were centrally located, due to the amount of volume for and aft the mufflers making said back pressure!

2005 CTSV BLACK LS7 Clutch/Flywheel/Slave, Tick Speed Bleeder, Tilton Clutch MC, RevShift Bushings, Domestic V8 Solutions (shifter, 8.8 Diff conversion, srut tower braces, sub-frame connectors), SLP cats, no cags, xpipe, bullet mufflers, Volante, iPod dock, G-force tune; 379hp 381tq.

Killing 5th gens like it is my job.
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post #10 of 11 Old 07-15-2009, 03:34 PM Thread Starter
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Quote:
Originally Posted by 66chevy View Post
i dynoed my car last thursday. waiting for them to send me the file by email and put the runs on youtube so i can post them. the car was completly stock except for the muff. delete. it was 8:30pm, 75% humidity, 85.5*f. it was VERY humid, as it gets to about 99*f during the day here with a heat index of almost 110*f. 870 miles on the car, no fans blowing on it at all. It made 354hp and 354lbfttq. the guys said the delete in noway hurt the #s. i will post the sheets and link to the vid as soon as i get them. Remember it was VERY humid and HOT even at 8:30 pm.

here is the shop it was done at, they are LS experts. next i will dyno it with the CAI on and a tune!

http://www.raginracin.com/Project_Vehicles.php

btw- they designed the first 2010 camaro cam that was sent to REDLINE MOTORSPORTS(howard)

.
Is this an auto or a manual?

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