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Old May 9, 2011 | 09:14 AM
  #22141  
PeteyTurbo@KHC's Avatar
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From: Philly, Jersey
Originally Posted by 06RS
578.32whp/593.64wtq

In all seriousness, I have no idea. I was told that the Psi Pro Dyno reads lower than
most mustang dynos. After seeing my numbers, I immediately threw that out the window. Comparing dyno numbers is subjective, and based on a lot of variables.

Edit: pete, it's just a K&N cone filter with a MAF adaptor
All dynojets will read the same, it is a simple inertia dyno, and the way it calculates power makes it consistent from dynojet to dynojet (speed vs. time). Ben made 494 on our dyno and went to psi to make 578 in the same week, so thats over 80hp difference. You cant really compare between the two because when you tune on a dynojet, you tune FOR a dynojet, and your load profile will be different then on road or mustang dyno, since the dynojet is just a free spinning drum that does not match the EVO's inertia weight for the street under any conditions except driving down a very steep hill, combine that with areas in the tune that were not used before and how untuned areas are handled on a DJ tune, it just makes it useless to compare with any accuracy from vehicle to vehicle..Either way I am sure your car is a blast to drive now.. I am wondering if I know this Steve you speak of, does he or did he have a black evo8?
Old May 9, 2011 | 10:08 AM
  #22142  
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whats new philly??
Old May 9, 2011 | 10:23 AM
  #22143  
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From: Philly, PA
Originally Posted by EvoRalph
whats new philly??
some of the members here came out of the closet.
Old May 9, 2011 | 10:26 AM
  #22144  
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From: DE
Originally Posted by AlwaysinBoost
I wonder if that means I have twice as much potential braking power than I'm using.
Do you hit ABS while braking? I know during an autox run if I'm not all over ABS I'm not braking hard enough. Coming from the sentra with no ABS, I had to be careful not to lock up. First time out in the evo on star specs, I was "threshold braking" then pushed harder and found there was way more grip/braking power than I was expecting. On hoosiers its even more, obviously. I'm still building my confidence level, but at the test n tune I was dive bombing corners. Drop anchor, ABS kicking in, pull in the anchor and turn in to the apex, wait for it, feed some speed and let the rear come around. Soo much fun
Old May 9, 2011 | 10:50 AM
  #22145  
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I try not to hit ABS as it unsettles the car prior to turn in but I do sometimes still trigger it. Really depends on how fast I brake and not so much how hard.
Old May 9, 2011 | 11:18 AM
  #22146  
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Yeah, stabbing the pedal too quickly makes the car unhappy, but I try not to be to slow about it either. Interesting about upsetting the car, because so far the car has felt really good under hard braking. Then again, I'm not going 100+mph
Old May 9, 2011 | 11:19 AM
  #22147  
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Originally Posted by igo4bmx
Ben you may have met Ketchup! there- he works there now hahahah
ha!
Old May 9, 2011 | 11:31 AM
  #22148  
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Originally Posted by 06RS
390whp/395wtq @26psi on Psi Proformances Dynojet. Steve is stopping at 26psi, as the stock clutch may not take much more.
video of the evo

http://www.facebook.com/home.php#!/p...00000487574699
Old May 9, 2011 | 11:49 AM
  #22149  
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Originally Posted by AlwaysinBoost
I try not to hit ABS as it unsettles the car prior to turn in but I do sometimes still trigger it. Really depends on how fast I brake and not so much how hard.
I could see doing a track day event, but at Autox you should be all over that ABS. Seriously with an aggressive pad compound and r compounds at least should cause a few ABS lock ups per run, there are always a few hard braking spots on course with a bumpy surface that usually causes it to come on. Also if you are braking too late that could cause it too, if you are pussyfooting around out there then yea you will never have it come on. Most of the time in my car it short spurts of it coming on, I think it actually helps a lot in my case, being a braking hack that I am. Any long ABS event means I am over-driving and doing something wrong.
Old May 9, 2011 | 12:18 PM
  #22150  
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Originally Posted by AlwaysinBoost
I'm only hitting .5-.6g's while braking but as much as 1.2g's in lateral acceleration in some spots. Amazing! I wonder if that means I have twice as much potential braking power than I'm using.
That's pretty interesting. Did you try holding the phone in different orientations, maybe the phone's accelerometer has a bias

Also, I'd intuitively expect the "circle" to be biased towards acceleration and braking, especially braking. Then again, maybe on a front heavy car, the opposite is true. I suck.

I'm certain you have more braking there, but would be very hesitant to guess that you are only using 50%.

Originally Posted by Mr. MR
Most of the time in my car it short spurts of it coming on, I think it actually helps a lot in my case, being a braking hack that I am. Any long ABS event means I am over-driving and doing something wrong.
Not to sound like I can actually drive but ... this is my experience as well. Short pings of the ABS assure me that I am near the threshold, long ones mean I've cooked it (though I could realize that without ABS).

I remember seeing a plot once, possibly posted by marc, comparing ABS to manual braking force. The ABS flatlines after it engages, but there is a sweet spot where you can push a little more than the max ABS force. So Technically pinging the ABS is a bad thing.

At least that's how I read it.
Old May 9, 2011 | 12:25 PM
  #22151  
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From: In da streetz
Originally Posted by Mr. MR
I could see doing a track day event, but at Autox you should be all over that ABS. Seriously with an aggressive pad compound and r compounds at least should cause a few ABS lock ups per run, there are always a few hard braking spots on course with a bumpy surface that usually causes it to come on. Also if you are braking too late that could cause it too, if you are pussyfooting around out there then yea you will never have it come on. Most of the time in my car it short spurts of it coming on, I think it actually helps a lot in my case, being a braking hack that I am. Any long ABS event means I am over-driving and doing something wrong.
I was more referring to HPDE and street tires. When I autox I almost always over drive the causing me to brake WAY too hard which results in massive ABS usage. it sucks and is something I'm constantly working on. Like the last run @ CBP. I dropped like a second off my time by going in SLOWER and coming out faster. I just have to remember that next time I'm at the starting line and the lights go green.
Old May 9, 2011 | 12:43 PM
  #22152  
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I never trigger my abs when autoxing, usually I'm on my crappy street pads though. This sunday I'll be on the Carbos, we'll see if I do then, that's if its dry...
Old May 9, 2011 | 12:51 PM
  #22153  
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From: In da streetz
Originally Posted by evremonde
I remember seeing a plot once, possibly posted by marc, comparing ABS to manual braking force. The ABS flatlines after it engages, but there is a sweet spot where you can push a little more than the max ABS force. So Technically pinging the ABS is a bad thing.

At least that's how I read it.

I remember seeing a plot one time of an ABS system and how fast it can slow you down compared to M.Schumacher in his F1 car. I don't know if the ABS system used in the test was equipped to an F1 car or not, but I just remember the artical and plot/graph showed that Schumacher could out brake the ABS computer. gonna search and see if I can find it.
Old May 9, 2011 | 02:30 PM
  #22154  
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Does anyone know the Evo X registered in the red run group for friday?
Old May 9, 2011 | 02:56 PM
  #22155  
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Pete, that one of the guys formerly of MPG with Tiebout.



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