Bandimere drag strip this Saturday April 12

jtmccabe · 04-21-2008, 10:10 PM

Quote:

Originally Posted by DrEvil

Hey bro - I love my Dinan and I think it was worth every penny - performance plus total piece of mind.

Don't get me wrong, I don't have major regrets or anything. It just makes me think twice when I consider how many more kilobucks I'm gonna have to cough up (continuing to go all Dinan) to get 345 whp in this thin air, if that's even possible.

Speaking of which, I see you have the Dinan exhaust too. Have you dyno'd it yet? 1/4 mile times?

DrEvil · 04-22-2008, 10:38 AM

Dynos are posted.

http://www.e90post.com/forums/showthread.php?t=133316

http://www.e90post.com/forums/showthread.php?t=133625

raceyBMW · 04-22-2008, 12:39 PM

Quote:

Originally Posted by jtmccabe

Don't get me wrong, I don't have major regrets or anything. It just makes me think twice when I consider how many more kilobucks I'm gonna have to cough up (continuing to go all Dinan) to get 345 whp in this thin air, if that's even possible.

Speaking of which, I see you have the Dinan exhaust too. Have you dyno'd it yet? 1/4 mile times?

I think you might have a very hard time reaching 345whp at our altitude based off of DrEvil's dynos. With his Dinan S1 and exhaust he is dynoing (uncorrected) 265whp. So you need another 80whp from bolt on mods, which I am just not sure is possible with our stock turbos.

DrEvil · 04-22-2008, 01:13 PM

You are probably right. But then again, the dynos seem to be optimized for N/A engines at sea level, so who knows what they really mean, plus I did not do a baseline. With all corrections and fudge factors, I calculate I am getting 407 hp at the crank. That, too, is irrelevant. Then, you might want to see my 1/4 mile - but what good is that without an experienced driver doing the run?

So, statistics are just one component of my Dinan value equation. The others are the feeling this car has now, how it differes from stock, and the warranty. Maybe track performance, if I get around to that.

335TrackAddict · 04-22-2008, 04:36 PM

Woah there. JTM has a 335i while DrEvil has a 335xi. That alone is good for 20'ish WHP, as proven on the dyno by JTM and forza. So it's not an apples to apples comparison.

To DrEvil's point, the dyno CORRECTION FACTOR is to correct to equivalent sea level power for an N/A car. That's why it is so imperative that you use uncorrected numbers for comparison. Uncorrected numbers are not affected by altitude because (on a dynojet) it's simply a calc of how fast it gets the heavy dynojet drum spinning.

I believe forza, on the same MAC dyno, got 242'ish whp stock (uncorrected) with his 335xi. Since ambient conditions were similar between DrEvil's run and forza's run, we can safely say that the Dinan tune + Dinan exhaust gives you about 23 whp increase.

Not sure where you got your 407 crank HP value. Being that you got about 265whp uncorrected, if you tack on the (admittedly incorrect) correction factor of 1.24, you're at 328whp. To get to 407 crank HP, that assumes a 25% drivetrain loss, which I hope to high heaven is not the case with BMWs.

By that same math, my car is making 492 crank HP.

Regardless, the track test I suggested to jtm earlier will probably mirror the dyno results, or maybe not. At Pueblo, we will come out of turn 10 at 60-75 mph, depending on driver skill and top out at 130-140mph at the end of the straight prior to turn 1. To completely eliminate driver skill, we can use my logging chip and log the time interval between 70-105mph, which happens entirely in third gear.

jtmccabe · 04-22-2008, 09:39 PM

Quote:

Originally Posted by 335TrackAddict

I believe forza, on the same MAC dyno, got 242'ish whp stock (uncorrected) with his 335xi. Since ambient conditions were similar between DrEvil's run and forza's run, we can safely say that the Dinan tune + Dinan exhaust gives you about 23 whp increase.

Actually forza got 223 and I got 242 (we were both stock at the time).

Just to correct the record, I thought for a minute that you had dyno'd at 345 whp but now I see it was 345 lb-ft (~320 hp). Still damn impressive, and enough to make me just a little jealous.

forza1976 · 04-24-2008, 09:14 AM

Ouch, I'm cowering in the corner with those low numbers... Don't laugh guys

jtmccabe · 04-24-2008, 11:42 AM

Don't worry forza, you're still faster with your fancy AWD.

ar design · 04-24-2008, 12:32 PM

I went yesterday, as well as last Saturday. Best time so far was a 13.5 @ 105 with a 2.1 60ft. I mixed in some race gas at the end because I was getting some stumbling. Not sure if the fuel pump is going, or if its the AA piggyback. ALl I have right now is a turboback and the AA Xede with the R07 downpipe file, on runflats.

How many of you guys are having issues with your tunes and the altitude? We are working on a factory ECU flash tune that is altitude specific. No ETA as of yet, however.

E30M3Driver · 05-10-2008, 02:50 PM

Quote:

Originally Posted by 335TrackAddict

I've got V2 and a high flow cat.

I'm putting down about 320whp uncorrected last I checked and I did a few more tweaks to the map since then.....so probably in the range of 330whp.

If you want a more direct comparison, we can check our terminal speeds at Pueblo. As you might surmise, I can't launch worth crap. At Pueblo, there's a >1/2 mile front straight that you enter ~60-70mph. You virtually remove the wheelspin and it's a long pull that you do about 16 times a day when you add up all the sessions.

I can let you borrow my logging chip and we can view the terminal speeds later. I typically hit 135-137 mph indicated (~133mph real) on that front straight. A stock car hits about 123-125mph indicated.

stock can hit 128 mph with a perfect execution of turn 10 and a wait, wait, wait, oh shit! BRAKE! to the entrance of turn 1. Turn 10 has changed now and the entrance is slower so I would expect a lower speed all the way around this year at the end of the straight.

335TrackAddict · 05-10-2008, 10:09 PM

Quote:

Originally Posted by E30M3Driver

stock can hit 128 mph with a perfect execution of turn 10 and a wait, wait, wait, oh shit! BRAKE! to the entrance of turn 1. Turn 10 has changed now and the entrance is slower so I would expect a lower speed all the way around this year at the end of the straight.

Haha, I know the feeling.

Perfect execution of turn 10, to me, is "ignoring the wall and going big".

On R-comps, I'm comfortable apexing 10 at exactly 70mph, and holding off on full throttle until I hit the left side of the front straight. Call me a wimp if you want!

They actually changed Turn 10 back to the original configuration. They were going to make it a 90 degree super tight turn (2nd gear) with a 15 foot wide track at apex(!!!!!), but them the motorcycle guys basically said they would never come back, so they just repaved the original Turn 10.

I'm headed to NASA next weekend, so I'll let you guys know.

04-22-2008, 10:38 AM	#46
DrEvil In charge of Evil Empire 20 Rep 313 Posts Drives: 2009 X6 5.0 Join Date: Feb 2008 Location: Denver iTrader: (0) Garage List 2009 911 Targa 4S [0.00] 2008 335xi cpe [0.00] 2007 530xi [0.00] 2006 Mustang [0.00] 2001 Audi A8 [0.00] 1997 Subaru SVX [0.00] 1985 Mustang [0.00] 1982 Mustang II [0.00]	Dynos are posted. http://www.e90post.com/forums/showthread.php?t=133316 http://www.e90post.com/forums/showthread.php?t=133625 __________________ For now -- Frozen White 2013 BMW M3 and Porsche Cayenne Turbo S Recent - 2009 Porsche 911 Targa 4S; 2009 X6 5.0i; Aston Martin V8V; 2012 BMW 650 Prior --- 2008 E92 335xi\|6MT\|Dinan ECU\|Dinan Free Flow\|KW V3 Coilovers\|Monoco Blue Metallic\|Goldenrod --- Nav/USB/PDC/Sport/Premium/Cold Wthr\|Yokohama ADVAN Sport\|Raptor plates ---> SOLD
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04-22-2008, 01:13 PM	#48
DrEvil In charge of Evil Empire 20 Rep 313 Posts Drives: 2009 X6 5.0 Join Date: Feb 2008 Location: Denver iTrader: (0) Garage List 2009 911 Targa 4S [0.00] 2008 335xi cpe [0.00] 2007 530xi [0.00] 2006 Mustang [0.00] 2001 Audi A8 [0.00] 1997 Subaru SVX [0.00] 1985 Mustang [0.00] 1982 Mustang II [0.00]	You are probably right. But then again, the dynos seem to be optimized for N/A engines at sea level, so who knows what they really mean, plus I did not do a baseline. With all corrections and fudge factors, I calculate I am getting 407 hp at the crank. That, too, is irrelevant. Then, you might want to see my 1/4 mile - but what good is that without an experienced driver doing the run? So, statistics are just one component of my Dinan value equation. The others are the feeling this car has now, how it differes from stock, and the warranty. Maybe track performance, if I get around to that. __________________ For now -- Frozen White 2013 BMW M3 and Porsche Cayenne Turbo S Recent - 2009 Porsche 911 Targa 4S; 2009 X6 5.0i; Aston Martin V8V; 2012 BMW 650 Prior --- 2008 E92 335xi\|6MT\|Dinan ECU\|Dinan Free Flow\|KW V3 Coilovers\|Monoco Blue Metallic\|Goldenrod --- Nav/USB/PDC/Sport/Premium/Cold Wthr\|Yokohama ADVAN Sport\|Raptor plates ---> SOLD
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04-22-2008, 04:36 PM	#49
335TrackAddict Private 5 Rep 67 Posts Drives: 335i Join Date: Apr 2008 Location: Up in the hills iTrader: (0)	Woah there. JTM has a 335i while DrEvil has a 335xi. That alone is good for 20'ish WHP, as proven on the dyno by JTM and forza. So it's not an apples to apples comparison. To DrEvil's point, the dyno CORRECTION FACTOR is to correct to equivalent sea level power for an N/A car. That's why it is so imperative that you use uncorrected numbers for comparison. Uncorrected numbers are not affected by altitude because (on a dynojet) it's simply a calc of how fast it gets the heavy dynojet drum spinning. I believe forza, on the same MAC dyno, got 242'ish whp stock (uncorrected) with his 335xi. Since ambient conditions were similar between DrEvil's run and forza's run, we can safely say that the Dinan tune + Dinan exhaust gives you about 23 whp increase. Not sure where you got your 407 crank HP value. Being that you got about 265whp uncorrected, if you tack on the (admittedly incorrect) correction factor of 1.24, you're at 328whp. To get to 407 crank HP, that assumes a 25% drivetrain loss, which I hope to high heaven is not the case with BMWs. By that same math, my car is making 492 crank HP. Regardless, the track test I suggested to jtm earlier will probably mirror the dyno results, or maybe not. At Pueblo, we will come out of turn 10 at 60-75 mph, depending on driver skill and top out at 130-140mph at the end of the straight prior to turn 1. To completely eliminate driver skill, we can use my logging chip and log the time interval between 70-105mph, which happens entirely in third gear.
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04-24-2008, 09:14 AM	#51
forza1976 Major General 3397 Rep 6,587 Posts Drives: BMW Join Date: Aug 2007 Location: 49417 and 60610 iTrader: (13) Garage List 2022 BMW M3X [10.00]	Ouch, I'm cowering in the corner with those low numbers... Don't laugh guys
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04-24-2008, 11:42 AM	#52
jtmccabe Commoner 19 Rep 394 Posts Drives: 2008 335i sedan Join Date: Jan 2007 Location: Christiansburg, VA iTrader: (1) Garage List 2005 Jeep Wrangler ... [0.00]	Don't worry forza, you're still faster with your fancy AWD. __________________ 2008 335i sedan \| 6MT \| Dinan S2 flash \| Titanium Silver/Black leather/Burl walnut \| Sport \| Premium \| CW\| CA \| Nav \| HD Radio \| iPod/USB \| Sirius \| PDC \| Style 162/230 (winter/summer) \| M3 steering wheel \| ZHP shift knob \| Blacklines \| Lux 4.0 \| etc.
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04-24-2008, 12:32 PM	#53
ar design 295 Rep 4,408 Posts Drives: 04 M3 Join Date: Jan 2008 Location: Denver, CO iTrader: (9)	I went yesterday, as well as last Saturday. Best time so far was a 13.5 @ 105 with a 2.1 60ft. I mixed in some race gas at the end because I was getting some stumbling. Not sure if the fuel pump is going, or if its the AA piggyback. ALl I have right now is a turboback and the AA Xede with the R07 downpipe file, on runflats. How many of you guys are having issues with your tunes and the altitude? We are working on a factory ECU flash tune that is altitude specific. No ETA as of yet, however. __________________ -Critter
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