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536whp on a mustang dyno. That is probably the world record for a bolt on M6. Thats like 675crank HP
 
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what what what? (gear was it in?)
 
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Congratulations. Love your M///. I continuously watch your car on Youtube for the RPI exhaust. Love the sound. You could certainly tell there was power unleashed on the final pull as the engine spooled up very very quickly.
 

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Thats a very ncie M6. Enjoy in good health.


I might be wrong here, but that does not look like a mustang dyno. All the mustang dynos I have seen have double rollers and the wheel sits between them. I might be wrong.

Secondly, at the top of the scale it says "Eng Power T WC". I believe that means crank hp and not whp.
 

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Discussion Starter #6
Guys
Let me try to answer a few of your questions. First it is a mustang dyno. "skyman2345" had his M6 put on this same dyno. He reported about 390 if I remember right. He does not have the mods I have so I should have more HP than his. As far as thinking these numbers could be crank HP I will check on that with the people that did these pulls and get back in a day or two. BMW says that you loose about 12% from crank to the ground. So does the math make that about 600 crank. But lets say this is crank HP, then if that was the case whp would be about 473 if it is true about the 12% lose from crank to the ground. But I will look into this at once. The pull was done in 4th gear and I do not know what gear your suppose to be in. I think the speed was about 128 mph. My biggest gain was the tune and headers. I felt the difference in the first 30 seconds of driving down the road. The torque gain was obvious, the throttle response was instant, and the car pulled harder longer. I have gone up against other M cars and it was always the same outcome. I recently did a vbox run and it turned 122 in the 1/4 mile and that was not being able to hook up. My 60 feet was horrible like 2.4 or more.
I will get back with some dyno graphs pictures and find out if these numbers are right or wrong. Please note that I put down 495 on a dynojet a few years back and that was without the headers. There is a video posted with those results on this forum. What ever these numbers represent I can say this car screams and I am happy with the mods and the difference it made.
 

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Very impressive #'s either way but a dynojet is a 12% drive train loss. Mustang dyno's have much much more. A good 20%. Regardless you have one strong M6, esp if you put down almost 500rwhp before the headers.
 

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my car made 528.8 in the 4th gear on Dynojet
 
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you added the tune with the headers ? or just updated it with headers tune ?
 

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My runs were made in 6th gear (1:1). Dynojet 224x, 452whp. You have to correct for gearing if not 1:1, also if you have higher ratio diff gearing, numbers will be off (high) if the dyno operator doesn't correct it. Apples to apples, folks

Sent from AutoGuide.com Free App
 

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Discussion Starter #13 (Edited)
OK, from the horse's mouth, Joey Granatelli here is the explanation of T WC and P WC. T WC is torque with corrections. P WC is power with corrections. Corrections refers to the dyno making corrections for humidity, sea level elevations and temperature. As far is this being WHP he said definitely. Keep in mind that I only had this video made because this is my sons hobby, even though it took months to get it done. Second is to show what these cars sound like with some good mods. I am not out to prove anything or have bragging rights. This is just data that was given to me so I posted it.<?xml:namespace prefix = "o" ns = "urn:schemas-microsoft-com<img src=" /><o:p></o:p>
<o:p></o:p>
About the tune. In 2012 when this was put on the dyno, we did it in 4th gear, this is why we did it again in 4th so the comparison was equal. <o:p></o:p>
<o:p></o:p>
In regards to when the tune was done... I had a tune done during the 2012 dyno and I am not certain what tune that was. Well between say 2013 and this 2014 dyno, BMW during a service call did what they do and I lost my tune. I complained to them that I have lost some power and they swore they did not touch the tune portion of the car. Well when the headers went on we found out it had no tune at all, stock. So some time after the header install the stage II tune was added. It did make a difference with just the headers, and then again with the tune.<I> I think both are important to a fast running machine.<o:p></o:p></I>
<I><o:p></o:p></I>
Another post talol85 put down 528 WHP so maybe this dyno I posted is somewhat true. <o:p></o:p>
 

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OK, from the horse's mouth, Joey Granatelli here is the explanation of T WC and P WC. T WC is torque with corrections. P WC is power with corrections. Corrections refers to the dyno making corrections for humidity, sea level elevations and temperature. As far is this being WHP he said definitely. Keep in mind that I only had this video made because this is my sons hobby, even though it took months to get it done. Second is to show what these cars sound like with some good mods. I am not out to prove anything or have bragging rights. This is just data that was given to me so I posted it.<?xml:namespace prefix = "o" ns = "urn:schemas-microsoft-com<img src=" /><o:p></o:p>
<o:p></o:p>
About the tune. In 2012 when this was put on the dyno, we did it in 4th gear, this is why we did it again in 4th so the comparison was equal. <o:p></o:p>
<o:p></o:p>
In regards to when the tune was done... I had a tune done during the 2012 dyno and I am not certain what tune that was. Well between say 2013 and this 2014 dyno, BMW during a service call did what they do and I lost my tune. I complained to them that I have lost some power and they swore they did not touch the tune portion of the car. Well when the headers went on we found out it had no tune at all, stock. So some time after the header install the stage II tune was added. It did make a difference with just the headers, and then again with the tune.<I> I think both are important to a fast running machine.<o:p></o:p></I>
<I><o:p></o:p></I>
Another post talol85 put down 528 WHP so maybe this dyno I posted is somewhat true. <o:p></o:p>
Got before 436 WHP on dyno jet and my car was healthy on the street

http://www.m5board.com/vbulletin/e60-m5-e61-m5-touring-discussion/214237-dyno-results-436-hp-dyno-jet.html

Look at the HP gap and how it acts in the real world these are only number shows the diffrence

Enjoy your ride
 

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Sounds amazing. I don't think the numbers are unrealistic either. I've seen plenty of people hitting around 470 whp with just i/e and a tune.
 

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I remember your exhaust videos when you got the RPi exhaust! They were so well done especially the one without the music omg.

Makes me want to go drive my car right now I have the same header and exhaust setup the sound is blissful!

You are running no cats, correct?
 

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I remember your exhaust videos when you got the RPi exhaust! They were so well done especially the one without the music omg.

Makes me want to go drive my car right now I have the same header and exhaust setup the sound is blissful!

You are running no cats, correct?
Exactly what I was referring too.....:typing:
 

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Discussion Starter #19
Headers = No Cats

Yes, the way this system from RPi works is there are no cats to speak of. And you know the sound in the cabin is not really that much louder. Going down the highway it is still fairly quite. I would never turn back anything I have done to this car.
 

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No secondaries but unless you have their (or other catless) headers, you still have primary cats.

-b.


Yes, the way this system from RPi works is there are no cats to speak of. And you know the sound in the cabin is not really that much louder. Going down the highway it is still fairly quite. I would never turn back anything I have done to this car.
 
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