JB2H/91 octane vbox times

Terry335 · 12-09-2007, 02:08 AM

Hey guys,

Decided to do a few runs in what I think represents a good daily driver trim. Mods right now are JB2H, UR catless downpipes, factory 2nd cats, factory catback, drop in filter. Car also has light weight rims and 245/45/17 Nitto 555Rs (around 10k miles on them now). Gas tonight was Shell 91. DA was around -600'.

I really wasn't sure what to expect performance wise with the stock 2nd cats/catback, because it visually looks restrictive.

To my surprise, performance is only off ~.1/1mph, or less. I really love this setup now, the exhaust is so quiet all you can hear are the turbos spooling like a banshee. Very cool.

Attached is an average run, and the glory run. Of around 6 runs 5 were in the 12.4@113 range, with one glory run of 12.3@115.

With the stock battery and 1/2 tank of gas, traction was predictably improved off the line, but still an issue.

Terry335 · 12-09-2007, 02:10 AM

Quote:

Originally Posted by eldy

can i borrow your vbox!?

Only if you bring it back with a 12.50 time or better.

e92phreak · 12-09-2007, 02:19 AM

Quote:

Originally Posted by Terry335

Only if you bring it back with a 12.50 time or better.

With you product installed in his car, right?

Terry335 · 12-09-2007, 02:21 AM

Quote:

Originally Posted by e92phreak

With you product installed in his car, right?

That would be the ideal scenario.

I've still got a JB1 with your name on it!

e92phreak · 12-09-2007, 02:23 AM

Quote:

Originally Posted by Terry335

That would be the ideal scenario.

I've still got a JB1 with your name on it!

May need to upgrade since I've seen the results.

Where did you do these runs today? Has it started raining yet? I've been stuck in the house trying to fix a bathtub faucet leak today *sigh*.... Can't get the brass bonnet off the dang faucet. Too much calcification.

Terry335 · 12-09-2007, 02:26 AM

Quote:

Originally Posted by e92phreak

May need to upgrade since I've seen the results.

Where did you do these runs today? Has it started raining yet? I've been stuck in the house trying to fix a bathtub faucet leak today *sigh*.... Can't get the brass bonnet off the dang faucet. Too much calcification.

I had that problem once... ended up breaking the valve and had to go through tile to fix it. Wasn't fun.

The runs were done on a long private road.

e92phreak · 12-09-2007, 02:29 AM

Quote:

Originally Posted by Terry335

I had that problem once... ended up breaking the valve and had to go through tile to fix it. Wasn't fun.

The runs were done on a long private road.

You need to bring me to that long private road one of these days hehe... Near us?

Terry335 · 12-09-2007, 02:31 AM

Quote:

Originally Posted by e92phreak

You need to bring me to that long private road one of these days hehe... Near us?

Check PM!

jcarlucci1 · 12-09-2007, 02:31 AM

Will you have new dyno numbers for this setup?

Terry335 · 12-09-2007, 02:32 AM

Quote:

Originally Posted by jcarlucci1

Will you have new dyno numbers for this setup?

Yeah hoping to get some Monday. I'm really hoping for ~340rw on 91 octane, but we'll see. I think you need to get some DP.

AU335 · 12-09-2007, 02:38 AM

Wow. Great times Terry. Very impressive

Can't wait for the JB2H w/ my 93 octane

jcarlucci1 · 12-09-2007, 02:50 AM

Quote:

Originally Posted by Terry335

Yeah hoping to get some Monday. I'm really hoping for ~340rw on 91 octane, but we'll see. I think you need to get some DP.

Thinking about it..need catted dp's though..what was your dyno with the old exhaust?

Terry335 · 12-09-2007, 02:52 AM

Quote:

Originally Posted by jcarlucci1

Thinking about it..need catted dp's though..what was your dyno with the old exhaust?

It's around here somewhere, but was on 96 octane. 377rw on the R and 355rw on the JB2H, I think.

youyou · 12-09-2007, 02:55 AM

Hey Terry,
I haven't been following much lately.
Maybe you can quickly explain to me what the "H" is ?
Can i add it to my jbs2 ? I use 94 octane all the time here in Montreal... If that makes a difference.
Thankx

Terry335 · 12-09-2007, 03:06 AM

Quote:

Originally Posted by youyou

Hey Terry,
I haven't been following much lately.
Maybe you can quickly explain to me what the "H" is ?
Can i add it to my jbs2 ? I use 94 octane all the time here in Montreal... If that makes a difference.
Thankx

You can! We're still testing now but drop me an email if you'd like to give it a shot. Here is some more info on it:

http://www.bmwjuice.com/JuiceBoxInstall_HOT.pdf

This is much better than running the R switch all the time. Be sure you have at least 96/97 octane if you're going to try both.

hotrod182 · 12-09-2007, 03:16 AM

Now if they had a drag strip with timing lights here, we would both be there proving our times with actual time slips. With 91 octane, and otherwise stock, I am running about 110mph. So down pipes really seem like a bonafide performance enhancer. Someone needs to run a sniffer test at a smog station to see how a car with just the secondary cats measures. I believe the main reason for the primary cats are for fast light off after starting cold.

Terry335 · 12-09-2007, 03:22 AM

Quote:

Originally Posted by hotrod182

Now if they had a drag strip with timing lights here, we would both be there proving our times with actual time slips. With 91 octane, and otherwise stock, I am running about 110mph. So down pipes really seem like a bonafide performance enhancer. Someone needs to run a sniffer test at a smog station to see how a car with just the secondary cats measures. I believe the main reason for the primary cats are for fast light off after starting cold.

Yeah so I'm picking up 3-4mph with the downpipes, hot pill, and probably ~60# less weight. Not bad at all. We need to throw a hot pill in your setup for cold weather testing on 91.

Hopefully one of the downpipe makers can do some smog testing for us. I think they would fail a cold start test, but the normal test when you arrive with a hot engine should be close. Not that it matters here in CA as you don't need to do smog tests until the car is 4-5 years old.

sambonator · 12-09-2007, 03:33 AM

Are downpipes easily spotted by the dealer technician, say, if you take your car in for an oil change or something?

remydlc · 12-09-2007, 04:27 AM

Sorry if i missed any post, but what does the H stand for in JB2H?

JB2Hard
JB2Hot
JB2Horrible
JB2Haven
or perhaps JB2Haters

remydlc · 12-09-2007, 04:35 AM

ops my bad, the Hot pill thingy....

sambonator · 12-09-2007, 04:38 AM

H=HOT, after the addition of the HOT pill to the JBS2.

So there are now:
JBS1
JBS2
JBS2H
JBS2R
JBS2RH

I'm not sure if the HOT pill works with JBS1... yet... might be a good add-on for it. I might have named it the + pill... so that we have:

JBS1
JBS2
JBS2+
JBS2R
JBS2R+

A418t81 · 12-09-2007, 08:28 AM

JBS2H is very nice. My butt dyno is not very sensitive anymore and I noticed the difference right off the bat. 1st and 2nd gear are a lot more interesting now

12-09-2007, 02:08 AM	#1
Terry335 Banned 106 Rep 2,587 Posts Drives: 335i Join Date: Jan 2007 Location: Socal iTrader: (0)	JB2H/91 octane vbox times Hey guys, Decided to do a few runs in what I think represents a good daily driver trim. Mods right now are JB2H, UR catless downpipes, factory 2nd cats, factory catback, drop in filter. Car also has light weight rims and 245/45/17 Nitto 555Rs (around 10k miles on them now). Gas tonight was Shell 91. DA was around -600'. I really wasn't sure what to expect performance wise with the stock 2nd cats/catback, because it visually looks restrictive. To my surprise, performance is only off ~.1/1mph, or less. I really love this setup now, the exhaust is so quiet all you can hear are the turbos spooling like a banshee. Very cool. Attached is an average run, and the glory run. Of around 6 runs 5 were in the 12.4@113 range, with one glory run of 12.3@115. With the stock battery and 1/2 tank of gas, traction was predictably improved off the line, but still an issue. Attached Images Last edited by Terry335; 12-19-2007 at 11:27 AM..
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12-09-2007, 02:31 AM	#9
jcarlucci1 Lieutenant Colonel 72 Rep 1,642 Posts Drives: Jet Black 335i Join Date: Mar 2007 Location: Tampa iTrader: (10)	Will you have new dyno numbers for this setup?
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12-09-2007, 02:38 AM	#11
AU335 Colonel 200 Rep 2,443 Posts Drives: 2007 e92 335i Join Date: Mar 2007 Location: Southeast iTrader: (7) Garage List 2007 335i [0.00]	Wow. Great times Terry. Very impressive Can't wait for the JB2H w/ my 93 octane
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12-09-2007, 02:55 AM	#14
youyou Banned 101 Rep 2,453 Posts Drives: Porsche 997 C4S Join Date: Oct 2006 Location: Montreal iTrader: (0)	Hey Terry, I haven't been following much lately. Maybe you can quickly explain to me what the "H" is ? Can i add it to my jbs2 ? I use 94 octane all the time here in Montreal... If that makes a difference. Thankx
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12-09-2007, 03:16 AM	#16
hotrod182 . 1015 Rep 4,029 Posts Drives: 2023 i4 M50 Join Date: Dec 2006 Location: California iTrader: (0)	Now if they had a drag strip with timing lights here, we would both be there proving our times with actual time slips. With 91 octane, and otherwise stock, I am running about 110mph. So down pipes really seem like a bonafide performance enhancer. Someone needs to run a sniffer test at a smog station to see how a car with just the secondary cats measures. I believe the main reason for the primary cats are for fast light off after starting cold.
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12-09-2007, 03:33 AM	#18
sambonator Samtaro! 130 Rep 2,609 Posts Drives: 2014 F32 N55 Alpinweiß Join Date: May 2007 Location: Newport Beach, CA, USA iTrader: (7)	Are downpipes easily spotted by the dealer technician, say, if you take your car in for an oil change or something? __________________
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12-09-2007, 04:27 AM	#19
remydlc Captain 24 Rep 617 Posts Drives: F30 N55 MT/blue metal/red int. Join Date: Aug 2007 Location: South Florida iTrader: (0)	Sorry if i missed any post, but what does the H stand for in JB2H? JB2Hard JB2Hot JB2Horrible JB2Haven or perhaps JB2Haters __________________ root@bash-it# shift -g 6 -c 335i \| grep "155 MPH"
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12-09-2007, 04:35 AM	#20
remydlc Captain 24 Rep 617 Posts Drives: F30 N55 MT/blue metal/red int. Join Date: Aug 2007 Location: South Florida iTrader: (0)	ops my bad, the Hot pill thingy.... __________________ root@bash-it# shift -g 6 -c 335i \| grep "155 MPH"
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12-09-2007, 04:38 AM	#21
sambonator Samtaro! 130 Rep 2,609 Posts Drives: 2014 F32 N55 Alpinweiß Join Date: May 2007 Location: Newport Beach, CA, USA iTrader: (7)	H=HOT, after the addition of the HOT pill to the JBS2. So there are now: JBS1 JBS2 JBS2H JBS2R JBS2RH I'm not sure if the HOT pill works with JBS1... yet... might be a good add-on for it. I might have named it the + pill... so that we have: JBS1 JBS2 JBS2+ JBS2R JBS2R+ __________________
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12-09-2007, 08:28 AM	#22
A418t81 Lieutenant Colonel 395 Rep 1,540 Posts Drives: Ever changing fleet Join Date: May 2007 Location: Alabama iTrader: (1) Garage List 2013 335is [0.00]	JBS2H is very nice. My butt dyno is not very sensitive anymore and I noticed the difference right off the bat. 1st and 2nd gear are a lot more interesting now __________________ 23 IOMG G80 CX, 23 iX M60, 24 GT3RS PTS Weissach, 24 RS E-tron GT, 24 Cybertruck
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