Realistic Gains?
Race Director
Joined: Oct 2005
Posts: 14,999
Likes: 200
From: Bay Area Ca.
I have an 08 manual and with Vararam and tune with catted headers with Corsa Sports I saw 47 rwhp gain. 422 both hp/tq.
3 grand is a good estimate for having all the work done.
What mufflers would you use? This would be extra.
These mods woke up the LS3 pretty good. Big gains in torque from the long tubes.
If you think you will not be satisfied with the power save your money and get a blower. Then this brings up other aspects to consider.
Do your thinking first...
3 grand is a good estimate for having all the work done.
What mufflers would you use? This would be extra.
These mods woke up the LS3 pretty good. Big gains in torque from the long tubes.
If you think you will not be satisfied with the power save your money and get a blower. Then this brings up other aspects to consider.
Do your thinking first...
Last edited by Boomer111; Oct 29, 2013 at 09:36 AM.
Former Vendor
Joined: Aug 2005
Posts: 16,897
Likes: 412
From: Lewisville TX
St. Jude Donor '03-'04-'05-'06-'07-'08-'09-'10-'11-'12-'13
Depends on total parts involved but 28-35 rwhp and 30-40 ft-lbs of torque.
Torque is going to be the biggest difference in the car and yes you will feel it. I would also say you should see a 1 mpg increase on highway driving too.
Torque is going to be the biggest difference in the car and yes you will feel it. I would also say you should see a 1 mpg increase on highway driving too.
Instructor
Joined: Sep 2013
Posts: 179
Likes: 3
From: Houston TX
I have an 08 manual and with Vararam and tune with catted headers with Corsa Sports I saw 47 rwhp gain. 422 both hp/tq.
3 grand is a good estimate for having all the work done.
What mufflers would you use? This would be extra.
These mods woke up the LS3 pretty good. Big gains in torque from the long tubes.
If you think you will not be satisfied with the power save your money and get a blower. Then this brings up other aspects to consider.
Do your thinking first...
3 grand is a good estimate for having all the work done.
What mufflers would you use? This would be extra.
These mods woke up the LS3 pretty good. Big gains in torque from the long tubes.
If you think you will not be satisfied with the power save your money and get a blower. Then this brings up other aspects to consider.
Do your thinking first...
Wow that is some really good gains with those add ons. Coincidentally my plans are to put a corsa sport and one of those snake charmer vararams on too. I just bought the vette so im new but realizing these cars dyno high and respond well to bolt ons
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Le Mans Master
Joined: Dec 2006
Posts: 7,459
Likes: 18
From: Oviedo,FL. Las Vegas
Save that money and put it towards a blower go to ECS and they will take care of you. Atleast that way, you will feel the difference
Last edited by speedraider; Oct 29, 2013 at 07:00 PM.
Drifting
Joined: Jan 2012
Posts: 1,548
Likes: 15
From: Paris TN
Most novices, like me, think in terms of advertised crank HP not RWHP. When you add the 15-20% parasitic drag losses, the brake HP increases are 20% increased as well. Am I understanding that correctly? So, a 45 HP increase in RWHP equals 60 brake HP?
As an example, my 06 LS2 started out with 400 brake HP from the factory and was last dynoed at 386 RWHP or 463 brake HP. Don't you add 20% for the parasitic losses to determine the new brake HP? If so, is this calculation correct? 386 X 1.20=463 brake HP. Some even say automatics lose 25% in drag losses.
I didn't do a bone stock dyno pull, so I don't know what the RWHP increases were.
As an example, my 06 LS2 started out with 400 brake HP from the factory and was last dynoed at 386 RWHP or 463 brake HP. Don't you add 20% for the parasitic losses to determine the new brake HP? If so, is this calculation correct? 386 X 1.20=463 brake HP. Some even say automatics lose 25% in drag losses.
I didn't do a bone stock dyno pull, so I don't know what the RWHP increases were.
Drifting
Joined: Oct 2011
Posts: 1,386
Likes: 2
From: Houston Texas
Most novices, like me, think in terms of advertised crank HP not RWHP. When you add the 15-20% parasitic drag losses, the brake HP increases are 20% increased as well. Am I understanding that correctly? So, a 45 HP increase in RWHP equals 60 brake HP?
As an example, my 06 LS2 started out with 400 brake HP from the factory and was last dynoed at 386 RWHP or 463 brake HP. Don't you add 20% for the parasitic losses to determine the new brake HP? If so, is this calculation correct? 386 X 1.20=463 brake HP. Some even say automatics lose 25% in drag losses.
I didn't do a bone stock dyno pull, so I don't know what the RWHP increases were.
As an example, my 06 LS2 started out with 400 brake HP from the factory and was last dynoed at 386 RWHP or 463 brake HP. Don't you add 20% for the parasitic losses to determine the new brake HP? If so, is this calculation correct? 386 X 1.20=463 brake HP. Some even say automatics lose 25% in drag losses.
I didn't do a bone stock dyno pull, so I don't know what the RWHP increases were.
All gains are measured from change in baseline dyno to post-tune dyno.
Melting Slicks
Joined: Apr 2007
Posts: 2,168
Likes: 242
From: Pittsburgh PA
Here is my 08 A6. Stock vs Stainless works 1 7/8" Longtubes with 3" X pipe and C6Z Mufflers. Still through stock intake, planning on adding a Halltech MF103 over the winter and seeing where we are.
Racer
Joined: Feb 2008
Posts: 326
Likes: 0
From: Norman OK
I gained about 45 (manual) and have less than 2k in kooks, honker, tune - but that's shopping around hard and doing my own work.
And something is wrong if you think 10-15% is negligible. It may not be a whole new car.
Also a good tune on your auto will make it drive much better. (Well its subjective but most think it feels better. Will be faster)
And something is wrong if you think 10-15% is negligible. It may not be a whole new car.
Also a good tune on your auto will make it drive much better. (Well its subjective but most think it feels better. Will be faster)
Heel & Toe
Joined: Dec 2012
Posts: 23
Likes: 0
From: Mary Esther Florida
Is that without a tune? I'm think of getting headers and a tune with stock intake (08 ls3). I've read a ton on air intakes and just not sold on them just yet for the price right now.
Thread Starter
Racer
Joined: Oct 2007
Posts: 332
Likes: 23
I gained about 45 (manual) and have less than 2k in kooks, honker, tune - but that's shopping around hard and doing my own work. And something is wrong if you think 10-15% is negligible. It may not be a whole new car. Also a good tune on your auto will make it drive much better. (Well its subjective but most think it feels better. Will be faster)
Melting Slicks
Joined: Apr 2007
Posts: 2,168
Likes: 242
From: Pittsburgh PA
It is partially tuned... we got the fueling in line on the dyno but the car kept picking up knock retard no matter where we went with timing (Can see the dip right before 5000rpm on the post header pull) I know my exhaust is hitting the body somewhere at times and it seems the LS3 knock sensors are overly sensitive so we are going to fix the exhaust, get a new intake on it and desensitize the knock sensors slightly and see where we are in the spring.
Heel & Toe
Joined: Dec 2012
Posts: 23
Likes: 0
From: Mary Esther Florida
It is partially tuned... we got the fueling in line on the dyno but the car kept picking up knock retard no matter where we went with timing (Can see the dip right before 5000rpm on the post header pull) I know my exhaust is hitting the body somewhere at times and it seems the LS3 knock sensors are overly sensitive so we are going to fix the exhaust, get a new intake on it and desensitize the knock sensors slightly and see where we are in the spring.
Intermediate
Joined: Feb 2013
Posts: 31
Likes: 1