Base dyno pull/aFe install
Thread Starter
Team Owner
Joined: Sep 2005
Posts: 29,113
Likes: 2,194
From: Big Bend Country, TX
St. Jude Donor '06-'07-'08-'09-'10-'11-'12-'13-'14-'15- '16-'17-‘18-‘19-'20-'21
NCM Lifetime Member
Base dyno pull/aFe install
So at 10:30 sharp, Matt at 21st Century puts the car on the dyno. Bone stock. It is nice and cold inside the shop. Right around 50 deg. 390.8 rwhp/407.1 torque. Dead center of the box as it were for what they are seeing on a non modified car. Then the tech did the CAI install. Looks way better than the stock air intake system. aFe even packs a license plate frame and a bunch of decals and stickers. My grand daughter has plastered those on her electric Corvette and the 3 wheeled electric trike already. 
As soon as my ARH mid-length headers get here we will do another set of pulls before and after they are installed. Wth, it's only money ............... 
As soon as my ARH mid-length headers get here we will do another set of pulls before and after they are installed. Wth, it's only money ...............
Instructor
Joined: Oct 2005
Posts: 188
Likes: 23
From: Victoria Texas
I was expecting to see another dyno run with the results of the AFE intake as the only mod. If you dyno after the AFE and the headers, you will not know how much each mod gave you. Since it's only money, it would be good to see what each part adds on the dyno.
Instructor
Joined: Mar 2015
Posts: 238
Likes: 50
From: FL
I agree, I was also waiting for results with CAI.
Thread Starter
Team Owner
Joined: Sep 2005
Posts: 29,113
Likes: 2,194
From: Big Bend Country, TX
St. Jude Donor '06-'07-'08-'09-'10-'11-'12-'13-'14-'15- '16-'17-‘18-‘19-'20-'21
NCM Lifetime Member
Instructor
Joined: Sep 2015
Posts: 162
Likes: 60
From: Melbourne Beach, Florida
Makes sense. Interested in the numbers for the CAI. As I'm sure you know, there are many that are adamant an aftermarket CAI will not make more HP and the HP gains advertised by the manufacturers and retailers are BS.
Perhaps you being an unrelated party to a manufacturer or retailer will provide some validity to the dyno results. I think you will see a gain of 10-12 HP. Keep us posted.
Perhaps you being an unrelated party to a manufacturer or retailer will provide some validity to the dyno results. I think you will see a gain of 10-12 HP. Keep us posted.
Last edited by Doug Z06; Dec 28, 2015 at 08:59 PM.
Thread Starter
Team Owner
Joined: Sep 2005
Posts: 29,113
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From: Big Bend Country, TX
St. Jude Donor '06-'07-'08-'09-'10-'11-'12-'13-'14-'15- '16-'17-‘18-‘19-'20-'21
NCM Lifetime Member
Your numbers are spot on based upon what Matt has seen so far on the ones 21st Century has installed. Without question, there are some out there that simply do not provide gains where it is needed most, that being in mid range. Sadly, many base their statements upon what was on the market for prior generations too. The ones for the C6 were a joke to say the least. Considering from where GM was trying to draw air, no one should be surprised.
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Thread Starter
Team Owner
Joined: Sep 2005
Posts: 29,113
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From: Big Bend Country, TX
St. Jude Donor '06-'07-'08-'09-'10-'11-'12-'13-'14-'15- '16-'17-‘18-‘19-'20-'21
NCM Lifetime Member
I think a lot on this board are. I will say one thing, I noticed that the longer I drove after the install, the more responsive the throttle seemed to become to small inputs. I attribute that to the system adjusting to the less restrictive flow through the a/c.
Melting Slicks
Joined: Dec 1999
Posts: 2,041
Likes: 697
From: Tulsa, Ok
Since the AFE is easy to install/remove, add it then dyno, then add headers, then dyno, then install the stock intake and dyno.
1) Base
2) with AFE
3) AFE + headers (and tune)
4) headers only (and tune)
It's only adding swapping the intake + an extra dyno. Now that would be R&D.
1) Base
2) with AFE
3) AFE + headers (and tune)
4) headers only (and tune)
It's only adding swapping the intake + an extra dyno. Now that would be R&D.
Racer
Joined: Feb 2015
Posts: 458
Likes: 20
That is exactly what we are planing on doing. On the day my headers are installed, prior to doing so, Matt will do another set of dyno pulls. Specifically for the purpose of giving us concrete numbers from the CAI. I will already be well over the minimum 200 mile figure established by aFe needed for the ecm to make the necessary adjustments to the system.
Melting Slicks
Joined: Sep 2009
Posts: 2,180
Likes: 233
From: Minnetrista Minnesota
Since the AFE is easy to install/remove, add it then dyno, then add headers, then dyno, then install the stock intake and dyno.
1) Base
2) with AFE
3) AFE + headers (and tune)
4) headers only (and tune)
It's only adding swapping the intake + an extra dyno. Now that would be R&D.
1) Base
2) with AFE
3) AFE + headers (and tune)
4) headers only (and tune)
It's only adding swapping the intake + an extra dyno. Now that would be R&D.
With headers and AFE my guess would be 30 at the wheel
Thread Starter
Team Owner
Joined: Sep 2005
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From: Big Bend Country, TX
St. Jude Donor '06-'07-'08-'09-'10-'11-'12-'13-'14-'15- '16-'17-‘18-‘19-'20-'21
NCM Lifetime Member
Catted. The headers are somewhere between here and there because of the holiday season. Matt figures they will show up next week. ARH had ten sets in stock last week when they were ordered so supply isn't the issue.
Thread Starter
Team Owner
Joined: Sep 2005
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From: Big Bend Country, TX
St. Jude Donor '06-'07-'08-'09-'10-'11-'12-'13-'14-'15- '16-'17-‘18-‘19-'20-'21
NCM Lifetime Member
That is what 21st Century is expecting. I will be very pleased with that gain.
Race Director
Joined: Jan 2014
Posts: 10,709
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From: Fulshear, TX
If you see that kind of gain I will be VERY impressed, and consider upgrading to them myself 
To confirm, you plan to leave the stock ECU/tune untouched? I am excited to see your results because that will give us concrete evidence on the gains between ported/coated manifolds and ARH mid-lengths since 21st is the one that did my install and before & after dyno pulls.
To confirm, you plan to leave the stock ECU/tune untouched? I am excited to see your results because that will give us concrete evidence on the gains between ported/coated manifolds and ARH mid-lengths since 21st is the one that did my install and before & after dyno pulls.
Instructor
Joined: Sep 2015
Posts: 162
Likes: 60
From: Melbourne Beach, Florida
Curious why you went with mid length headers and not long tube? I know you have a Borla X-pipe so perhaps that's the reason. Or, you don't want to do a tune and you can get away with no tune with mids/cats and still get a decent gain in HP and no CEL and no warranty issues.
Thread Starter
Team Owner
Joined: Sep 2005
Posts: 29,113
Likes: 2,194
From: Big Bend Country, TX
St. Jude Donor '06-'07-'08-'09-'10-'11-'12-'13-'14-'15- '16-'17-‘18-‘19-'20-'21
NCM Lifetime Member
If you see that kind of gain I will be VERY impressed, and consider upgrading to them myself
To confirm, you plan to leave the stock ECU/tune untouched? I am excited to see your results because that will give us concrete evidence on the gains between ported/coated manifolds and ARH mid-lengths since 21st is the one that did my install and before & after dyno pulls.
To confirm, you plan to leave the stock ECU/tune untouched? I am excited to see your results because that will give us concrete evidence on the gains between ported/coated manifolds and ARH mid-lengths since 21st is the one that did my install and before & after dyno pulls.