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  #41  
Old 01-08-2017, 01:52 AM
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JUST ARRIVED!!!










I will to the best of my ability, try to have a before and after dyno posted before mif February. Done @ DUDMD's shop so he can tune the engine. That and, it's Dima.

I'll still get another dyno before all that on this tune so that question gets answered.

Jed made these for the s62 but they'll fit the holes for all these blocks so we'll get an idea what gains can be had on a non s62.

If by chance you've got a spare m5 steering box, m5 sway bar or anything else I should mod while in there, I'd be forever grateful. These last few months wiped me out. I think we'll drop the engine so it'll all come out. Good time to look for leaks and whatnot on this girl's heart. Perhaps a good time to attach those engine badges I had made up.

In any case, I think it will be great to see what Dima can pull out of these on my 4.6 because on the 4.9 s62 Jed got impressive numbers. 26hp over Dinan M5 headers doing the math, thats over 65hp over stock.

I might need a muffler. Any way I can cut and weld 2 small ones together at an angle to replace the resonator? Butterfly cutout... Yes. I hope, it all costs $ I guess.
On the headers:

If you were on the fence about purchasing a set, I know they're expensive and you'll probably wait till dyno numbers come in but this might just might be the thing to push you over the line.

Just look at what you get as extras!!!





There are decals too but I'll post pics of them on the car once applied.

On to that dyno. Yo Dima! I'm bring'n the heat.
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Last edited by Plattus1000; 01-08-2017 at 02:14 AM.
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  #42  
Old 01-08-2017, 10:26 AM
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Can't wait to see before and after numbers on a 4.6!
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  #43  
Old 01-08-2017, 11:56 AM
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Very pretty!

For clarification- The dyno runs were with open headers
The engine was tuned to optimize header performance gains
The headers are straightforward install on my X5
No other modifications were made to exhaust

Questions:
Why doesn't either TQ or HP fall off on dyno runs?
Why does TQ line fluctuate so much?
Is there a warranty?
Will there be a printed gain in HP and TQ one can expect on a stock 4.6?
How much is left for porting?
Do the collectors line up to the stock exhaust location?
Will there be a tune available to compliment the header performance?
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Last edited by bcredliner; 01-08-2017 at 12:10 PM.
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  #44  
Old 01-08-2017, 04:48 PM
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Quote:
Originally Posted by bcredliner View Post
Very pretty!

For clarification- The dyno runs were with open headers
The engine was tuned to optimize header performance gains
The headers are straightforward install on my X5
No other modifications were made to exhaust

Questions:
Why doesn't either TQ or HP fall off on dyno runs?
Why does TQ line fluctuate so much?
Is there a warranty?
Will there be a printed gain in HP and TQ one can expect on a stock 4.6?
How much is left for porting?
Do the collectors line up to the stock exhaust location?
Will there be a tune available to compliment the header performance?
I was going to try and answer all these questions but I'd sound like a broken record if I said "I don't know" to each.

If I have time/money I'll install these on a stock 4.4 and then my wagon's 4.6 with nothing behind the headers but miles of pipe. No cats, no m5 resonator (I'm trying to figire a way to cut and weld two small mufflers together with a cut-out just before them but I might keep the resonator for now)

I will ask Jed though. He just now is moving his shop so I'm not sure how long the response will take. Good questions however.
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  #45  
Old 01-09-2017, 01:40 AM
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BCredliner - - -

(from the man himself)

"Questions:
Why doesn't either TQ or HP fall off on dyno runs? (I assume he means looking at the dyno sheets you sent me).*


It's more of a formatting issue with the graph. *As much as I want to say my headers keep making more power beyond redline, perhaps they do. *But we stop short of redline, so not to stress the motor too much. *


Why does TQ line fluctuate so much?


The fluctuations are shift points. *We just get the car up to 4th gear to do the actual pull.


Is there a warranty?


Lifetime Warranty agains manufacturer defects.


Will there be a printed gain in HP and TQ one can expect on a stock 4.6?


We won't have this info until it's tested in your car.


How much is left for porting?


The inlet flanges are already enlarged over the factory exhaust ports on the S62/M62. *So if the cylinder heads are ever ported, the headers will already match the porting.


Do the collectors line up to the stock exhaust location?


In the case of the E39 application, yes. *If the headers are applied to the X5 chassis, it remains to be seen if it lines up. *If they don't, I don't think the final collector will be too far off. *The headers still follow and hug the bell housing. *The supplied 6" connecting pipes past the exit flange will aide in lining up to the stock exhaust. *If still too far off, I can make a different set of connecting pipes to make the connection.


Will there be a tune available to compliment the header performance?


Eventually there will be a tune but I'm not focused on that at the moment. *There are so many tuners out in the market now that will work with any set of headers."

Now it's my turn to answer a question. How much umph can be had on the 4.6 and 4.4 from just the addition of the tubes as well as the tune?
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Last edited by Plattus1000; 01-09-2017 at 07:38 AM.
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  #46  
Old 01-12-2017, 06:49 PM
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Addendum ;
My engine is mostly stock. I can't/won't change my exhaust for the test. At most because I'm running open exhaust after the cats, I might leave them on for the dyno bit to save time and money, I might just delete the cats upon install since they're coded out anyway.

I will provide you with with the best answers to the 4.4-4.6 questions. Every car will be different for sure but I get the sense that you're pretty skeptical.

I'll enjoy getting your reaction BC.
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  #47  
Old 01-12-2017, 07:32 PM
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Quote:
Originally Posted by Plattus1000 View Post
Addendum ;
My engine is mostly stock. I can't/won't change my exhaust for the test. At most because I'm running open exhaust after the cats, I might leave them on for the dyno bit to save time and money, I might just delete the cats upon install since they're coded out anyway.

I will provide you with with the best answers to the 4.4-4.6 questions. Every car will be different for sure but I get the sense that you're pretty skeptical.

I'll enjoy getting your reaction BC.
Not skeptical at all. Just due diligence. I always do a value equation. How much improvement in HP/TQ can I expect per dollars spent.

If I have your dino numbers in your current setup and then the dino numbers after only adding headers, no tune, I can get some idea of what I might get accepting your numbers as the minimum.

Dino numbers with tune added before headers and then add headers would be OK but that would not likely optimize your application. With only numbers with a tune to go with headers I can't separate the contribution of the tune verses the headers alone.

Thus far, I an running the Dinan tune with meth so that when I am not on nitrous I still have decent performance. That means I haven't retarded the timing, it is more advanced than stock. I can't do a tune that needs more timing advance because of the risk of detonation on nitrous. That was the primary reason to add meth, synthetically increase the octane to be in safer zone. That's the long story reason for my request.
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  #48  
Old 01-12-2017, 08:36 PM
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I gotcha.
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  #49  
Old 01-13-2017, 10:12 PM
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This is amazing!
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  #50  
Old 01-13-2017, 11:17 PM
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Quote:
Originally Posted by cncmastr View Post
This is amazing!
Which part?
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