Vbox testing after installing down pipes.

RBC · 01-04-2010, 03:59 PM

Very nice!

There is nothing like measuring the efectiveness of the upgrades!

These numbers made me start questioning the Catless DP as my next mod...

The gains IMHO may not enough for the cost and risk envolved...

The risk of failling Emission test is scaring... (failing, then put the stock back on, do new test, take the stock DP off, put the catless back on... = $$$$)

hotrod182 · 01-04-2010, 05:27 PM

Quote:

Originally Posted by edo

Now time to go fully catless

No doubt a rear exhaust section that is less restrictive AND much lighter would have a definite effect. And yes a higher flowing intercooler along with the exhaust would probably put me right at the 124 mph mark.

Remember this testing here is all on crap 91 octane, so the meth works wonders.

Yes I have tried different higher maps, with almost no noticeable improvement at all. So there is probably some other restriction at this point.

I really is pretty impressive to be runninng 8.2 sec 0-100 times, and 9.4 60-130 they way I drive the car everyday on the streets.

Proper Motion LLC · 01-04-2010, 05:50 PM

0-100 in under 8 seconds is gonna happen for you...God damn..

cn555ic · 01-04-2010, 05:51 PM

Quote:

Originally Posted by hotrod182

No doubt a rear exhaust section that is less restrictive AND much lighter would have a definite effect. And yes a higher flowing intercooler along with the exhaust would probably put me right at the 124 mph mark.

Remember this testing here is all on crap 91 octane, so the meth works wonders.

Yes I hae tried different higher maps, with almost no noticeable improvement at all. So there is probably some other restriction at this point.

What is interesting is that my 60-100mph split is dead even with the some test reports of the Z06. So not bad considering that largely leaves the traction issue out of the equation. Either way, pretty impressive to be runninng 8.2 sec 0-100 times, and 9.4 60-130 they way I drive the car everyday on the streets.

I didn't know you still have the secondary cats still...

hotrod182 · 01-04-2010, 10:40 PM

Quote:

Originally Posted by cn555ic

I didn't know you still have the secondary cats still...

Yes, stock from the downpipes back. Wish there was some bolt on cat system that you could just bolt to the downpipes, and have it exhaust downwards, at least saving you all the weight of the stock system.

hotrod182 · 01-05-2010, 03:41 AM

So anyways, was so curious to see if I could replicate my 123 trap speed from yesterday. And so tonight, I did 3 back to back runs, and I was able to back it up with a solid 123mph trap average.

Run #1 12.0 @ 122.9 mph
Run #2 12.0 @ 123.1 mph
Run#3 12.0 @ 123.2 mph

Hows that for consistancy, LOL.

Temps were about 10 degrees cooler. (52F). So no big improvement there. Just goes to show you that meth is so good, it doesn't really make a huge difference if it is 10 degree warmer outside.

All runs here were just done on map#7, still 91 pump+ meth.

Runs 2 and 3 were both 9.4 second 60-130mph times.

These were all back to back runs, and contrary to yesterday, each run was a strong or stronger than the one preceding it! So perhaps it is true letting the car adapt to one map is better than jumping from map to map between runs.

Looks like this might be the limit without rear exhaust and/or intercooler. Higher octane might give me about .5mph higher traps.

jblackwell · 01-05-2010, 08:47 AM

I want a Vbox bad!

hotrod182 · 01-05-2010, 11:24 PM

Quote:

Originally Posted by jblackwell

I want a Vbox bad!

It really is a very necessary tool. First of all to gauge your modifications, and secondly to see your relative performance compared to others using the same device. I can make run after run with almost identical numbers. Trying to accurately measure that with a stopwatch would truly just be hit when trying to compare acceleration numbers.

edo · 01-05-2010, 11:41 PM

I bought Performancebox. It is a successor of Vbox.

jblackwell · 01-06-2010, 12:00 AM

Quote:

Originally Posted by edo

I bought Performancebox. It is a successor of Vbox.

Time for a little google search...... How do you like it? Any features that make it better or worsen than the vbox?

Presidio335xi · 01-06-2010, 12:35 AM

Quote:

Originally Posted by edo

I bought Performancebox. It is a successor of Vbox.

http://www.vboxusa.com/performancedrift/compare.php

it less then half the price

gt3fever · 01-06-2010, 02:35 AM

Hotrod,

what do you set up your boost switch?

hotrod182 · 01-06-2010, 08:28 AM

Quote:

Originally Posted by hipertech

Hotrod,

what do you set up your boost switch?

Do you mean for the meth injection? I have mine set up around 7psi. I might raise it some. It came out of the box triggering at around 5psi!

01-04-2010, 03:59 PM	#23
RBC Private 7 Rep 98 Posts Drives: BMW 335i E92 '07 6MT Join Date: Nov 2009 Location: PT iTrader: (1)	Very nice! There is nothing like measuring the efectiveness of the upgrades! These numbers made me start questioning the Catless DP as my next mod... The gains IMHO may not enough for the cost and risk envolved... The risk of failling Emission test is scaring... (failing, then put the stock back on, do new test, take the stock DP off, put the catless back on... = $$$$) __________________ E92 335i '07 6MT Procede V4 \| AMS FMIC \| AR Catless DP \| BMS DCI KW V1 \| H&R Sway Bars
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01-04-2010, 05:50 PM	#25
Proper Motion LLC Custom Powder Coater 147 Rep 2,784 Posts Drives: White 335i Sedan Join Date: Dec 2008 Location: Orange County CA iTrader: (2)	0-100 in under 8 seconds is gonna happen for you...God damn.. __________________ www.propermotion714.com
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01-05-2010, 03:41 AM	#28
hotrod182 . 809 Rep 3,974 Posts Drives: 2023 i4 M50 Join Date: Dec 2006 Location: California iTrader: (0)	So anyways, was so curious to see if I could replicate my 123 trap speed from yesterday. And so tonight, I did 3 back to back runs, and I was able to back it up with a solid 123mph trap average. Run #1 12.0 @ 122.9 mph Run #2 12.0 @ 123.1 mph Run#3 12.0 @ 123.2 mph Hows that for consistancy, LOL. Temps were about 10 degrees cooler. (52F). So no big improvement there. Just goes to show you that meth is so good, it doesn't really make a huge difference if it is 10 degree warmer outside. All runs here were just done on map#7, still 91 pump+ meth. Runs 2 and 3 were both 9.4 second 60-130mph times. These were all back to back runs, and contrary to yesterday, each run was a strong or stronger than the one preceding it! So perhaps it is true letting the car adapt to one map is better than jumping from map to map between runs. Looks like this might be the limit without rear exhaust and/or intercooler. Higher octane might give me about .5mph higher traps. Attached Images __________________ 2011 Alpine 335d M-Sport 12.34 @ 110.48mph 2019 i3s Terra, 2008 Black 335i Sedan. 11.11@ 129.47 mph 2008 Monaco Blue JB3 2.0 335i Coupe. 11.33 @ 132.77 mph, 60-130mph: 6.95 seconds 2023 i4 M50 11.48 @ 121.56mph, 3.43 0-60 (dragy)
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01-05-2010, 08:47 AM	#29
jblackwell Captain 52 Rep 811 Posts Drives: 335 Join Date: Nov 2009 Location: Cave Creek, AZ iTrader: (13)	I want a Vbox bad! __________________ '08 TiAg E90 335 M-Aero kit. - SOLD
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01-05-2010, 11:41 PM	#31
edo ****** 53 Rep 886 Posts Drives: E92 335i Join Date: Nov 2008 Location: hell iTrader: (1)	I bought Performancebox. It is a successor of Vbox. __________________ Mods: RB turbos, JB4, BMS DCI, Scoops, Forge DVs, ar design catless DPs, Milltek exhaust system, Helix FMIC, Quaife LSD, VK MotorWerks OC Kit, Bilstein B16 PSS10
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01-06-2010, 02:35 AM	#34
gt3fever Major 77 Rep 1,232 Posts Drives: 992 GT3, G87 Join Date: Oct 2008 Location: Socal, Taiwan iTrader: (15)	Hotrod, what do you set up your boost switch?
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