BMW 340i DYNO RESULTS JB+, CATLESS DOWNPIPE ETC.

mike@x-ph.com · 03-01-2018, 12:25 PM

Quote:

Originally Posted by G.Newt

Thousands of miles on the CG DS-1 and no code. Just gains (:

Nice

jpsimon · 03-02-2018, 12:42 PM

I'm lazy, has anyone done a back-to-back dyno with and without the DS-1?

Mike@N54Tuning.com · 03-02-2018, 08:04 PM

Quote:

Originally Posted by jpsimon

I'm lazy, has anyone done a back-to-back dyno with and without the DS-1?

back to back dynos on same day with a downpipe install is asking a lot from an end user.. I have never really seen one on any brand.. Its a lot of work, so unless shop doing the DP install has a dyno it will be tough to do. Would be awesome if someone could do it.

Mike

lci_340i · 03-05-2018, 11:02 AM

Quote:

Originally Posted by eluded

People have posted dinos with only the magic pipe.

Great post by the OP. I'm thinking of going JB4 only with a downpipe and nothing else. I think that should be on the upper limit before you get throttle closure.

That will definitely get you some nice reliable power and not to mention the amazing turbo spool you get with a catless downpipe.

Rob340i · 03-28-2018, 11:47 PM

When you replace the downpipe on the 340i do you need to replace either the upper/lower clamps like people say on the 335i? If so does anyone have a link to buy the clamp or clamp kit with gasket. I looked on ecs there website was kinda difficult to navigate.

Daniely30 · 05-18-2018, 12:04 PM

I got the intake already installed. And just ordered the DP catless. I will call the guys to schedule a dyno before i install DP, and then run with DP, no jb4, and then DP with jb4.

mike@x-ph.com · 05-18-2018, 01:14 PM

Quote:

Originally Posted by Daniely30

I got the intake already installed. And just ordered the DP catless. I will call the guys to schedule a dyno before i install DP, and then run with DP, no jb4, and then DP with jb4.

chenry · 05-18-2018, 01:17 PM

Quote:

Originally Posted by Daniely30

I got the intake already installed. And just ordered the DP catless. I will call the guys to schedule a dyno before i install DP, and then run with DP, no jb4, and then DP with jb4.

That will be great!! Thnx

louielouie · 05-18-2018, 01:27 PM

You may wanna get yourself a charge pipe...

jeveryday · 06-25-2018, 11:49 AM

great numbers man

B58togo · 06-25-2018, 10:32 PM

Quote:

Originally Posted by louielouie

You may wanna get yourself a charge pipe...

This is B58 land. Our OEM charge pipe is stout.

louielouie · 06-26-2018, 01:38 AM

Quote:

Originally Posted by B58togo

This is B58 land. Our OEM charge pipe is stout.

Oops, missed that part!

Here4MT · 09-05-2018, 05:31 PM

Did anyone end up running dynos on JB4 with and without the DP? Trying to decide if I should install mine or not...

B58togo · 09-05-2018, 08:01 PM

Just do it. The sound and quicker spool on their own are so worth it.

B58 · 09-08-2018, 03:15 PM

I love how the B58 sounds..... reminds me of a little V8.

RMMAGA · 09-08-2018, 09:58 PM

biggest limitation with jb without EWG connector is that you cannot change / offset the waste gate position, therefore even if you ask for more boost the ECU limits the amount of waste gate and therefore you do not make your target boost

basically the ECU only allows the waste gate to vary in a tight range for boost control that limits what a simple piggy back can do

in my experience DP is pretty effective in generating 3-5 PSI more boost at effectively the same waste gate position

hence I would conclude that JB+ DP may be perfect combo...or at least will allow you to get more boost without adding the EWG wiring

Here4MT · 09-09-2018, 11:55 PM

Quote:

Originally Posted by RMMAGA

biggest limitation with jb without EWG connector is that you cannot change / offset the waste gate position, therefore even if you ask for more boost the ECU limits the amount of waste gate and therefore you do not make your target boost

basically the ECU only allows the waste gate to vary in a tight range for boost control that limits what a simple piggy back can do

in my experience DP is pretty effective in generating 3-5 PSI more boost at effectively the same waste gate position

hence I would conclude that JB+ DP may be perfect combo...or at least will allow you to get more boost without adding the EWG wiring

Quote:

Originally Posted by RMMAGA

biggest limitation with jb without EWG connector is that you cannot change / offset the waste gate position, therefore even if you ask for more boost the ECU limits the amount of waste gate and therefore you do not make your target boost

basically the ECU only allows the waste gate to vary in a tight range for boost control that limits what a simple piggy back can do

in my experience DP is pretty effective in generating 3-5 PSI more boost at effectively the same waste gate position

hence I would conclude that JB+ DP may be perfect combo...or at least will allow you to get more boost without adding the EWG wiring

Sorry, I should have mentioned that my used JB4 came with the EWG wiring. Thanks everyone for the words of encouragement. I'll go ahead and get it installed.

lci_340i · 09-20-2018, 11:51 AM

I might add I have been running an o2 spacer that eliminates the CEL on a catless downpipe for the past 5k plus miles and no hiccups.. the JB+ with catless downpipe has been the perfect combo for my application. Absolutely flawless with no "drivetrain malfunctions" that some of my friends get while running a JB4.

Daniely30 · 02-16-2019, 10:24 AM

Any dyno for awd around ny area?

03-02-2018, 12:42 PM	#24
jpsimon Team Zissou 3065 Rep 10,197 Posts Drives: 2022 AWD M3 Comp - SMB Join Date: Dec 2006 Location: CT iTrader: (7)	I'm lazy, has anyone done a back-to-back dyno with and without the DS-1? Last edited by jpsimon; 03-02-2018 at 01:30 PM..
	Appreciate 0 Quote

03-28-2018, 11:47 PM	#27
Rob340i Sergeant First Class 87 Rep 150 Posts Drives: 340i M Sport Join Date: Nov 2017 Location: Italy iTrader: (0)	When you replace the downpipe on the 340i do you need to replace either the upper/lower clamps like people say on the 335i? If so does anyone have a link to buy the clamp or clamp kit with gasket. I looked on ecs there website was kinda difficult to navigate.
	Appreciate 0 Quote

05-18-2018, 12:04 PM	#28
Daniely30 Private 42 Rep 77 Posts Drives: 2017 340i Join Date: Feb 2015 Location: Nyc iTrader: (0)	I got the intake already installed. And just ordered the DP catless. I will call the guys to schedule a dyno before i install DP, and then run with DP, no jb4, and then DP with jb4.
	Appreciate 0 Quote

05-18-2018, 01:27 PM	#31
louielouie Major 538 Rep 1,047 Posts Drives: '18 F80 Join Date: Jan 2016 Location: Los Angeles iTrader: (13)	You may wanna get yourself a charge pipe...
	Appreciate 0 Quote

06-25-2018, 11:49 AM	#32
jeveryday Colonel 80 Rep 2,335 Posts Drives: 2012 535i xDrive Join Date: Oct 2007 Location: Long Island, New York iTrader: (6)	great numbers man
	Appreciate 0 Quote

09-05-2018, 05:31 PM	#35
Here4MT New Member 3 Rep 12 Posts Drives: 18 340i 6MT Join Date: Sep 2018 Location: Woodland Hills, CA iTrader: (0)	Any new thoughts on the DP? Did anyone end up running dynos on JB4 with and without the DP? Trying to decide if I should install mine or not...
	Appreciate 0 Quote

09-05-2018, 08:01 PM	#36
B58togo Major 809 Rep 1,369 Posts Drives: M240i Join Date: Feb 2017 Location: NY iTrader: (0)	Just do it. The sound and quicker spool on their own are so worth it. __________________ 2017 M240i/ ZF8 Pure Drivetrain Solutions Stage 1 & torque converter/xHP/ DAW Ultra Flow/ DS2/ Nostrum injectors/ E40 Doug Newton tuned/ ER DP/ Remus axle back/ BMS intake/ FTP CP/ M Perf LSD
	Appreciate 1 Here4MT3.00 Quote

09-08-2018, 03:15 PM	#37
B58 Major 558 Rep 1,457 Posts Drives: 922 Turbo Join Date: May 2018 Location: USA iTrader: (1)	I love how the B58 sounds..... reminds me of a little V8. __________________ 2024 X3 M40i 2014 BMW M5
	Appreciate 0 Quote

09-08-2018, 09:58 PM	#38
RMMAGA Private 73 Rep 95 Posts Drives: 120i Join Date: Sep 2018 Location: China iTrader: (0)	biggest limitation with jb without EWG connector is that you cannot change / offset the waste gate position, therefore even if you ask for more boost the ECU limits the amount of waste gate and therefore you do not make your target boost basically the ECU only allows the waste gate to vary in a tight range for boost control that limits what a simple piggy back can do in my experience DP is pretty effective in generating 3-5 PSI more boost at effectively the same waste gate position hence I would conclude that JB+ DP may be perfect combo...or at least will allow you to get more boost without adding the EWG wiring
	Appreciate 2 Here4MT3.00 lci_340i16.50 Quote

09-20-2018, 11:51 AM	#40
lci_340i New Member 17 Rep 20 Posts Drives: 2017 340i Join Date: Jan 2017 Location: beverly hills iTrader: (0)	I might add I have been running an o2 spacer that eliminates the CEL on a catless downpipe for the past 5k plus miles and no hiccups.. the JB+ with catless downpipe has been the perfect combo for my application. Absolutely flawless with no "drivetrain malfunctions" that some of my friends get while running a JB4.
	Appreciate 0 Quote

02-16-2019, 10:24 AM	#41
Daniely30 Private 42 Rep 77 Posts Drives: 2017 340i Join Date: Feb 2015 Location: Nyc iTrader: (0)	Any dyno for awd around ny area?
	Appreciate 0 Quote