That's really strange. It seem like Texas is a breeding ground for SO many crazy high HP cars...you'd think dyno's were everywhere lol.

That's a good question and something I'd have to investigate. I guess it's not usually something we worry about because the overall power we make isn't necessarily always a concern. Whenever we use our dyno, it's generally only to do some kind of carefully conducted before/after test. So in those cases, we're only really worried about the delta between the tests more then the result itself, since they're both faced with the same margin of error.

 

If the data is not convincing to you, then leave it and be happy. Even if the headers adds no gain, at least you get better sound.

On a side note, if I was FVD, I would pick up the cost and stand behind their product.

 

My $.02: Tom, I think you've made a valuable contribution to the board by exhaustively explaining your customer's test results. We are all grateful to you and sdg for taking the time and resources to detail your modifications and share the dyno graphs. We all benefit from your collective work. As a result, the rest of us don't need to beta test the individual components to see what works in order to achieve our desired power gains.

I'm a proponent of using before/after testing to isolate variables. You've done that. It's also healthy to question the legitimacy of the data if reasonable doubts prevail. Picking apart the data with specious logic doesn't change the results, nor does reframing the question six different ways. At this point the burden of proof shifts to FVD or their customers to refute your data by using a reputable, independent testing facility. For those who purchased FVD headers, perhaps you should address FVD with your concerns.

Thanks again to Tom and Champion for their contribution to our passion.

 

+2. We use our Mustang dyno as a calibration tool - MAX power isn't everything when it comes to vehicle drive-ability.

 

If the delta is within the margin of error you can't conclude anything and that is why I ask. The delta between the FVD headers and the stock manifold isn't very great above 5krpm and below 3krpm and if it's within the margin of error then it should be ignored.

 

My configuration is not a hodgepodge. FVD has tested the components I have together as a unit and they no doubt tested against the stock manifold and wouldn't be selling the entire package if the stock manifold worked better. If you think FVD is selling snake oil, feel free to contact them and chastise them for it.

Here is what I am doing.

1.) I contacted ATXAutosport to have them reach out to Cobb and get me an Accessport.

2.) I plan to have them disable my FVD piggyback and I will install the Cobb tune to see how it works with my three bolt-ons.

3.) If I can get that done this week, I will be taking the car to SA Friday night for some test and tune and I will post my slips.

4.) If the results are promising, I may get a pro-tune from Cobb here in Austin if I can convince them to do it since this is mostly a development center.

 

I value my integrity above all else. I certainly wasn't going to go around on the forums bragging that these headers that I had talked about Added power when in practice they did the opposite – at least in conjunction with my other mods.

Unfortunately there are no magazines or resource to go to test the effectiveness of the aftermarket modifications other than having it done yourself. I asked for this test because I had heard very mixed reviews from trusted sources about the effectiveness of aftermarket headers for this car.

 

Great. Cant wait to see the results!

 

Ah ok, I see what you meant now. Well, to make sure we're within an acceptable margin of error from run to run, we repeat the individual runs several times. Remember the dyno run process I mentioned earlier in the thread. So if we do 5 runs back to back and get variations of anything more then let's say 5hp in the results, we continue until the consecutive runs are consistent. Generally, you don't see big variations as long as you're able to keep some strong fans on the intercoolers and radiators. In this particular case since we did the tests in such a carefully created environment, the results from each run were surprisingly consistent in both configurations.

 

Well said and agreed!

To ship a car several states away, test configurations, dyno and then share/post data is rare for several reasons. Some of which have become apparent in this thread.

Thx SDG and Tom for all your efforts and contributions with this. I look forward to more real world results on ANY product out there that can be substantiated to achieve real world results. Any advertised product in the way or which will not contribute to that elusive 10.0 ET should be called out... period.

 

Now that we're back on track (lol) here's a quick teaser of something that landed on my desk a week or so ago. For all those worried about the Y-Pipe....have no fear, here's a little something we've been working that's coming real soon.

 

Tom, She looks like an embryo but if it makes power i'm interested. lol

 

#Blackpipesmatter

 

In the end I decided to switch my exhaust to Tubi catless. Should be installed tomorrow. Didn't want to leave 10 wheel hp and 35 wheel torque on the table. Keeping my Europipe if I decide that my neighbors or I cannot live with the extra noise of the Catless. EP is such a great exhaust and so well made. Not an easy decision at all. If I find that I just can't live with the extra noise I will put my EP back on and part out the Tubi catless

 

can't wait to see some 1/4 slips from this beast when you get her back!