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Red vs Black on Pump

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Old Dec 2, 2009, 10:26 AM
  #31  
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Good comparison, thank you!
Old Dec 2, 2009, 10:44 AM
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Wish FP did a blackfriday sale on the blacks
Old Dec 2, 2009, 11:02 AM
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Originally Posted by dsmfan95
Too me that looks like the boost you're seeing at the end of the run is already after he lifted off the gas. I can't say for sure, but the way it nose dives after 7800ish, I'd say he lifted.
This

@ BoostWhore - Black Friday sale on the Black could have been epic!
Old Dec 2, 2009, 11:17 AM
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^^ha ha you took the word right out of my mouth lol
Old Dec 2, 2009, 11:56 AM
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Originally Posted by crcain
But according to this graph:



I see for runfile 007, peak boost was 27 psi, and it tapered to 20 psi didn't it? Maybe I don't need how to read dynojet graphs though? Sorry if I'm being thick.
Originally Posted by dsmfan95
Too me that looks like the boost you're seeing at the end of the run is already after he lifted off the gas. I can't say for sure, but the way it nose dives after 7800ish, I'd say he lifted.
Correct its when I lifted. That is dyno lag past peak power so here is the graph at peak power when I ran it out all the way:



In all my logs it only drops 4psi on this combo no matter what . On the whip at the end of the run its hard to say if its me lifting, a little sync lag, or what. In the log its always the same though. I will post those up from before and after at all boost levels as well.
Old Dec 2, 2009, 12:03 PM
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Originally Posted by Aby@MIL.SPEC
Great comparison, especially for the 91 octane folk's

can you post the mivec s2 vs m3 cam compare?
Of course



Boost was 31psi for the S2 and 33 for the M3. S2 with its specific MIVEC, the M3 with its specific, both tuned to the car and combo. Magnus, 1200s, MAF, 3" TBE, ported head, etc. Both pulls done on E85-E98 but I am not sure exactly what the exact mix was.

Last edited by JohnBradley; Aug 18, 2010 at 02:16 PM.
Old Dec 2, 2009, 12:33 PM
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which one is which above?
Old Dec 2, 2009, 12:47 PM
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520 is the M3 and 546 is S2s. Sorry I thought I mentioned it earlier, but the M3 also took less timing down low which directly affects torque so all in all the S2 is a win. To be specific these were the 278/274 11.5/11.2 "evolved" S2s with the oiling groove modification as well. When I can convince him to bring the car up I am going to do a pull from EXACTLY the same RPM on the S2 setup so the powergraphs are even more obvious.
Old Dec 2, 2009, 01:17 PM
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Great info, Aaron! S2's will be the cam I go with!

-Jalal
Old Dec 2, 2009, 01:21 PM
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Aaron, sorry if this asking for too much , but here goes.

Can you post a graph for us from this test (Black vs Red) and (a) use only 1 pull from each pair, (b) change the hp/tq scaling to 25hp increments instead of 50hp and (c) also lift the hp/tq numbers up and away so we can see where and how much the differences are across the rev range?

I know it's a little much, and I'm an uber pita, but I think we would all love if we can see that difference a little more clear. I'm real particular.

Thanks!

-Jalal
Old Dec 2, 2009, 01:39 PM
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Very nice work. Thanks for posting the info and results!
Old Dec 2, 2009, 02:02 PM
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great info!
Old Dec 2, 2009, 02:32 PM
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makes me want to switch out my m3's for some s2's....
Old Dec 2, 2009, 04:45 PM
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Originally Posted by MJ23FE
Aaron, sorry if this asking for too much , but here goes.

Can you post a graph for us from this test (Black vs Red) and (a) use only 1 pull from each pair, (b) change the hp/tq scaling to 25hp increments instead of 50hp and (c) also lift the hp/tq numbers up and away so we can see where and how much the differences are across the rev range?

I know it's a little much, and I'm an uber pita, but I think we would all love if we can see that difference a little more clear. I'm real particular.

Thanks!

-Jalal
this is clear as I can get it and have everything show in the same screen. I cant get 25whp and everything so there were one or two minor sacrifices:

Old Dec 2, 2009, 05:16 PM
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I'm sold.. FP Black it is for me.


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