Halltech

These results were done by an unknown tuner. Our customer was pretty happy with the results.
The second pull was obviously plagued by spark knock. You can see the loss of power when that occurs. The last pull was the best and equals what many of our dealer/installers see with the Super Bee MF103.
We have over 40 dealer/installers that order our Super Bee MF103 every week. Bolt on and forget it is the reason. Tuning is completely optional, but when you see these numbers, tuning becomes very attractive.

Blueline

Great Intake here, I installed it on my Z and had great success. Also great customer service, thanks for answering all of my questions Jim!

Tony

No4Play

got a heads/cam build that I am waiting on being finished while I'm deployed. COH got me hooked up with a Halltech and I can't wait to get it installed!!!!

Halltech

They'll do a great job.

JoesC5

I'm trying to understand the graph.

First run(blue) at 10:07:57AM with 473.13 HP. I'm assuming that was a baseline pull with the stock air filter??????

Second run(red), 6 minutes later at 10:13:10AM with 459.30 HP. I'm assuming this was after you installed your air breather in place of the stock breather???????

Third run(green), 14 minutes later at 10:26:55AM with 483.63 HP. I'm assuming this is with your air breather and a tune?????

It appears your intake, without a tune made less horsepower(14) then the stock air breather???????

Where is the run where you checked the horsepower of the stock air breather, but also with a tune??????

lucxy

This is my z06 dyno chart. All pulls were done with MF103, Corsa X Pipe, Corsa Sport exhaust and dyno tune. The first pull was 473, second made less (due to heat in my view) since there was little cool down between first and second pull. The 3rd pull was done after about 10-15min cool down.

May base line with mods but without dyno tune was around 450hp. (All WHP numbers are SAE). You can read more on this here: http://forums.corvetteforum.com/c6-z...yno-pulls.html

jimman

Jim I only got 482 rwhp where's my missing hp

propain

Nice gains.

Halltech

91 Octane.

camirocz

Any cold air intake will produce similar results .They all improve over stock by about 12 h.p,a good tune adds another 18 h.p for a total gain of 30 h.p Been there done that. This is getting old and repetitive.

JoesC5

Then what Halltech has shown is that three pulls were made over a 19 minute span, without any changes made in the air breather or the tune, and got three different readings, with a 24 horsepower spread. With a 24 horsepower spread, kinda hard to claim anything, don't you agree?

Very misleading post by Halltech, I believe.

Halltech

Nope. We have many dynos posted by customers which report the same gains. Some done by some of our 50 tuners, some by customers, but never our own dynos. Misleading, would be if we could not back up our claims:







Just our intake, no tuning on the Katech Dyno Cell #2 engine dyno stock vs Super Bee:

JoesC5

It is misleading as your original post seems to imply that the gain in horsepower show in the dyno graph was due to the tune, when actually there was zero change made to the engine and the tune between the three pulls. You should have said that the three different horsepower readings was do to a change in engine temp, not with/without a tune. If you had included a baseline pull that showed the horsepower before the tune, and then a pull after the tune, then I would not have a problem with your post.


Of course, this is why I have zero faith in chassis dyno readings. Three pulls, three different(major) horsepower readings, and not a single thing done to the engine/tune. So which is the true horsepower reading? 459? 473? 483?

Halltech

I see what you are saying. This customer had a 450 RWHP stock pull. The tuning was not done by Halltech.

You are absolutely correct about the swing in power, but that is not the fault of the dyno.

Example:

Stock Air fuel ratio in open loop (49% throttle position-100% TP) 11:1 to 11:5:1 depending on the rpm. You can see that this tuner has the air fuel ratios rich, then lean, then rich. 12:1 final is not the best a/f for max power.

Spark advance: 20 degrees max on the Z06, with ALL conditions perfect. Under 86F intake air temp; under 212F water temp; no spark knock retard; no Low Octane relegation (this happens when too many spark knocks are counted). If any of the above conditions are outside of those parameters, timing is pulled by the ECM.

COTP off: The stock ECM has a 3 stage Cat Over Temp Protection circuit, discovered by me in 2001. I was pissed off that ever good pull on the DynoJet was followed by a loss of 25 to 30 RWHP on the second pull. (2002 Z06). I had a good GM contact at the time, who checked with his GM tuning Guru who tuned the C5 Race GT1 cars and got the lowdown. COTP. This was a new GM safety circuit that adds fuel when the O2 sensors see 1616F. The first shot is 10%, then 15%, then 20.5% if the cats are still hot. The motor could theoretically be doused with enough fuel to cause 9:1 air fuel ratios. Imagine the power loss on the dyno. I helped create the first simple checkbox in LS1 Edit to turn this off. (Of course only on the dyno, ha ha)

Now couple that with spark knock retard, and 100F dyno conditions, 130F iats and you can see the swings are real.

I did not intend to spoof anyone with before and after numbers, but rather show the Big Show of 484 RWHP that our Super Bee and tuning can bring to the table.

Our best dyno numbers have been where we start the dynos at 170F water temp (keeps the coolant temp below 212F by run end) which is impossible without proper cooldown. How long does it take to get the water temps back to 170 after they hit 225F? You lose -2.5 degrees timing at 212F and 4.5 degrees at 130F.

Then keep the airflow going into the Beehive at 60 mph if possible to provide ambient temps through the pull. Visualize starting at 80F IAT and ending at 125F which is what happens on the typical pull. Bamm! -12.5 degrees.

Try dynoing with the hood closed with the stock intake, and with ours and you will see huge gains (which are real and very representative of dynamic horsepower on the road)

Spark Knock can pull as much as 25 Degrees timing, but by then you ECM has pulled out all High Octane timing, and relegated the timing to the Low Octane tables.

GARY2004Z06

Chassis dynos are wonderful tuning tools when used properly. On Tune Time Performance's Mustang Dyno, we always made our pulls in the same fashion to get accurate results. We always allowed a cool down period, set our fans up the same way, started our pulls at the same coolant temperature and used the same tires. It is very important to pay close attention to detail.
As for results, we always like to see the performance on the track. We do not paper race, although mathematical analysis and science is a BIG part of the equation.

Beach Bum

Couple of quick questions, bear in mind, I am new to C6Z ownership.

Do these CAI's steal any air originally intended for the radiator from the factory ? If yes, is the coolant temp effected ? Is there cutting or permanent modification of anything ?

Who do you recommend for installation in the Dallas area ? Do they have dyno tuning capability to achieve similar results ?

Thank you

GARY2004Z06

This will not steal air.
No cutting necessary.
You can do the install in about 15 minutes yourself.

Carlos Allen of Vette-Air is located in Allen Texas. He's a great guy and excellent tuner.
Where Breathing Equals Power!
Allen, TX

(214)491-8314

UBNZO6D

I agree 100% but that's typical from tuners putting their own twist on numbers... Especially from this one..

Greg

GARY2004Z06

Just curious, have you drag raced your 07 ZO6 - 584/516 by Charlie @ RPM?

UBNZO6D

Many, many times...Is there another question in there ?

Greg