Breathless Performance Dyno Proof! 1/7/2005
I had explained that he would get around 17 to 22 gain and that I did think the 29 plus was high. I did notice that with his original stock run that the timing was being reduced by knock drastically. This could be a clogged filter or the computers original program mapping of the timing table for a certain temps. Either way the customer did let us know that he did not like the way the car ran before. We try to run a consistent test at a consistent temp. We actually did 7 runs on the stock system to get a good average. First run was the best then all went down hill from there. After the Vortex ram induction system was installed we ran it again 5 times at the same temps as before. Dyno was done within an hour of the stock run. With the tech 2 connected we noticed no knock retard and a smooth consistent pull on the dyno graph. even after 5 runs back to back all the runs were still within 2 HP of each other. There was nothing done to change the dyno, actually if you look at the graph when we started the test they were very close and starting spreading out in the higher RPMs.
Seat of the pants pull is also a big power prover and he did say he felt a good power increase. The Vortex system has been proven over and over again at both the track and dyno. Actually we are the only company that goes to all the Corvette Events including race events and guarantees quicker runs at the track.
1. Yes they were SAE corrected #s Actually SAE was .988
2. Water Temp was kept between 200 to 203 for all the tests
3. Tests were done within a hour
4. Tech 2 was connected at all times
5. No we did not even go near the dyno computer after the stock runs.
6. All this was done in front of the customer
7. We did not check the condition of the stock filter but the customer has it and can check it.
8. It does not matter if the dyno was reading high or low it is the change in power that is important. The graph before was showing erratic power due most likely to the knock retard.
9. We did run 12 runs on the dyno but only charged him for 3
10. He’s very happy with the system and does feel the power increase.
Ernie
www.BreathlessPerformance.com
I agree that a 30HP gain seems like way too much, but I also think that the starting point of 290HP seems "low" for an MN6 (you all have to agree with that). And as mikemercury states, there could have been legitimate reasons for that "low" output, and we would need more data to understand why that was the case.
If one considers the "typical" MN6 power output of 300-305HP, then the gain would be closer to 15HP, which I think we would all consider more "legit".
The fact is the numbers are right there for all to see, and I for one thank Matt for posting his before/after data, and Ernie for his explanation of the work done.
We are all constantly asking for before/after dyno data with regard to intakes, as they are the most common performance mod. Let's "question", but not "flame" a poster for doing this, and just take the data for what it's worth.
Just my $0.02
I had explained that he would get around 17 to 22 gain and that I did think the 29 plus was high. I did notice that with his original stock run that the timing was being reduced by knock drastically. This could be a clogged filter or the computers original program mapping of the timing table for a certain temps.
Either way he is Happy.
Ernie
www.BreathlessPerformance.com
Last edited by Avanti; Jan 10, 2005 at 11:42 AM.




Either way, it sounds like BPP took good care of you and you're happy with the results. Ignore the naysayers- they're like jackels sometimes.
The Best of Corvette for Corvette Enthusiasts
Ernie
www.BreathlessPerformance.com
Ernie
www.BreathlessPerformance.com
Ernie
www.BreathlessPerformance.com

So Matt, they did the dyno, took the car some place else in the shop for the work, and then came back for another set of dyno pulls?
You can get different numbers by strapping the car down a little tighter. If the car is cooler, it will make better numbers. But the worse deed, is fudging the numbers by making the correction factor, vehicle weight, or any other variable in the mustang dyno different.
You can get different numbers by strapping the car down a little tighter. If the car is cooler, it will make better numbers. But the worse deed, is fudging the numbers by making the correction factor, vehicle weight, or any other variable in the mustang dyno different.
- Matt
My experiences were:
320 rwhp bone stock 2001 C5 MN6
Installed BPP Vortext Ram Air, BPP Air Bridge, Corsa Cat Back and x-pipe.
Same day, same shop same dyno after install - consistent 310 rwhp.
Ernie, at the time you told me that the intake upgrades I made would not effect the dyno results due to the ram effects, apparently that has changed now.
I don't disagree that the Ram Air is responsible for some minor power increase in real world driving applications but to even hint that 10-30 rwhp is the result of your air cleaner over a stock (clean) air cleaner is a sham.












