Login






BMW Garage  BMW Meets  Register  Search  Today's Posts  Mark Forums Read 

BMW 3Series (E90 E92) Forum
>
JB2H w/ DP 91 octane dynos


12102007, 05:27 PM  #23 
Banned
68
Rep 2,587
Posts 
The JB2H makes the car slightly richer if anything, but the offroad downpipes might alter the readings. It looks to be .25pt richer below 3500rpm, .25 leaner from 35005200, .50 leaner from 52006000, and about the same to redline.

Appreciate
0

12102007, 05:29 PM  #24 
Major General
113
Rep 6,608
Posts 
How are those simms working out for you??

Appreciate
0

12102007, 05:29 PM  #25 
Modder Raider
477
Rep 8,629
Posts
Drives: M3
Join Date: Apr 2007
Location: Surf City, HB

Nothing's for sure. I test things out and then post my honest opinions about the product. I've had the JB2 in the past. It's a great product for the money. I'm interested in what the H will do.
__________________
e36 M3 Coupe, e36 325i Sedan
e90 335iSOLD Best 601309.15 SecondsWWW.MR5RACING.COM 
Appreciate
0

12102007, 05:29 PM  #26 
Major General
113
Rep 6,608
Posts 

Appreciate
0

12102007, 05:38 PM  #27 
Lieutenant Colonel
31
Rep 1,600
Posts
Drives: e90 335i
Join Date: Aug 2006
Location: SoCal

Nice results!!
A quick question for you Terry, have you seen any limp modes in any applications with the H yet? Stock car 91 Octane, drop in filter secondary cat and res delete 91 Octane, Catted DP's stock exhaust 91 Octane, etc? In other words have you found a setup that is definitely not able to run the "pill" or are you just being conservative and not recommending it for 91 octane unless someone has aftermarket DP's? 
Appreciate
0

12102007, 05:43 PM  #28  
Banned
68
Rep 2,587
Posts 
Quote:


Appreciate
0

12102007, 05:46 PM  #29 
Lieutenant Colonel
31
Rep 1,600
Posts
Drives: e90 335i
Join Date: Aug 2006
Location: SoCal


Appreciate
0

12102007, 06:31 PM  #30 
Banned
68
Rep 2,587
Posts 
I think you'll like it! A little more kick than the JB2, but still silky smooth and trouble free.

Appreciate
0

12102007, 07:23 PM  #31 
First Lieutenant
4
Rep 306
Posts 
Hey TERRY, I know this has been discussed before. But looking at the graph it shows that the JB2 makes just as much low end tq as the 1.47. I thought the reason 1.47 was so popular was its massive tq down low...? Or is it below 2500 rpm.

Appreciate
0

12102007, 07:25 PM  #32  
Major General
113
Rep 6,608
Posts 
Quote:


Appreciate
0

12102007, 07:31 PM  #33 
First Lieutenant
4
Rep 306
Posts 

Appreciate
0

12102007, 07:38 PM  #34  
Brigadier General
51
Rep 4,484
Posts 
Quote:
Terry's car had the "H" pill added to the JB2 as well as Catless DP's The interesting thing was, Terry just installed the "H" pill last night. He drove over to the dyno this morning after driving to work. In his first two runs (with about 23 minutes cool down between the runs) he made: 332 rwhp 358 rwtq Then suddenly he does the 3rd run and it jumps to about 345 rwhp / 373 rwtq. We were like WTF?? So he lets it cool again for 34 minutes and do a 4th run. It got the 347 rwhp / 374 rwtq. On this run I monitored his boost gauge to see if anything was weird. It was basically between 1112 psi for most of the time, but hit 12.5 psi for a bit somewhere in the midrange of the run. It was only there for a split second and dropped back down into the 1112 psi range for another second or so, then began dropping as it got closer to redline. We both kinda figured that maybe his ECU/JB2 didn't adapt to his "H" pill that adds about .5 or so psi extra boost yet in the first two runs. That extra .5 or so extra boost would account for the sudden +13 rwhp and +15 rwtq. I would suspect that if we were both on 93 Octane and he didn't have his catless DP's (so we would of had basically the exact same mods except me on v1.47 and him on JB2H (with hot pill) we would of made very similiar power above 4000 rpms (around 338340 rwhp), but the v1.47 PROcede probably would of still made 1012+ rwtq more below 4000 rpms 

Appreciate
0

12102007, 07:40 PM  #35  
Brigadier General
51
Rep 4,484
Posts 
Quote:
Charlie (CEA3) tested the Riss Racing DP's and showed about a 27 rwhp gain and even more torque. Terry has the UR DP's. Don't know how much they make alone, but he suspects +15 rwhp and torque, and I agree. The DP's surely help get the car on boost faster and add power, even in the low rpms, but most notably in the upper rpm range. 

Appreciate
0

12102007, 07:44 PM  #36 
Banned
68
Rep 2,587
Posts 
When you add in the DP low end boost takes off on the JB2.

Appreciate
0

12102007, 07:44 PM  #37 
Team Zissou
358
Rep 9,216
Posts 
downpipes help quite a bit
__________________

Appreciate
0

12102007, 07:46 PM  #38  
Banned
68
Rep 2,587
Posts 
Quote:


Appreciate
0

12102007, 08:47 PM  #40 
Dancing Machine
26
Rep 1,419
Posts 
can you make a video some time to show the sound? thx!
__________________
2007 e90 & 1981 Corvette Predecessors: 2007 BMW 335i E92, 2006 M5, 2008 Viper SRT10 Coupe, 2005 Viper Yellow, 2006 Corvette Z51, 2009 Challenger SRT8, 2006 S4, 2001.5 Nogaro Blue S4, 2006 GTI w/ DSG, 06 Evo IX, 04 S4, 04 911x51, 03 Evo VIII, 98 Eclipse GSX, 96 GST, 92 Galant Vr4, '70 Grand Prix Model J, '70 Nova, '68 Firebird

Appreciate
0

12102007, 08:49 PM  #41 
Banned
68
Rep 2,587
Posts 

Appreciate
0

12102007, 09:02 PM  #42 
Major
58
Rep 1,301
Posts 
Terry, are you going to get RR dps? if you did, keep all else the same and then you could see how much you make (go back to the dyno).. that would be a great way to compare the 2 products.

Appreciate
0

12102007, 09:04 PM  #43 
Banned
68
Rep 2,587
Posts 

Appreciate
0

12102007, 09:15 PM  #44 
Lieutenant Colonel
32
Rep 1,568
Posts 
Terry, with the secondary cats still there, do you think the car will pass or fail emissions given the catless DPs?

Appreciate
0

Bookmarks 
Thread Tools  Search this Thread 

