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

lci_340i · 02-26-2018, 09:04 PM

Had my car dynoed today over at EAS in Anaheim and made some nice power. over 400 WHEEL TORQUE!!. Graph attached.

JB+, Burger Intake, VRSF Catless Downpipe, Resonators Deleted, Akrapovic rear section muffler.

The numbers:

Baseline - 321 hp 353 tq
First pass - 375 hp 396 tq
second pass - 377 hp 402 tq

lci_340i · 02-26-2018, 09:20 PM

Bimmerpost won't let me upload images for some reason... so here is a link to a picture of the dyno graph. as well as link to the video of a pull on the dyno

links:

https://photos.app.goo.gl/G4yJeMfETD8crlUT2

bmw5858 · 02-27-2018, 08:20 AM

Those are solid number for a jb+ considering that the catless downpipe on the new b58 motor doesn't add any power (confirm par Terry at BMS) Baseline TQ seems a bit high for a stock car though.. Anyway the fact is the gain, 55WHP and 49WTQ is great!!

Enjoy the ride now!

Mike@N54Tuning.com · 02-27-2018, 10:27 AM

Posted the Dyno for you..

Pretty solid for JB+. Was it on default or cranked up fully?

Mike

lci_340i · 02-27-2018, 11:13 AM

Quote:

Originally Posted by Mike@N54Tuning.com

Posted the Dyno for you..

Pretty solid for JB+. Was it on default or cranked up fully?

Mike

Thanks my man! I believe It was cranked up to around 4 psi over stock..

lci_340i · 02-27-2018, 11:14 AM

Quote:

Originally Posted by bmw5858

Those are solid number for a jb+ considering that the catless downpipe on the new b58 motor doesn't add any power (confirm par Terry at BMS) Baseline TQ seems a bit high for a stock car though.. Anyway the fact is the gain, 55WHP and 49WTQ is great!!

Enjoy the ride now!

yeah baseline tq is really high for stock the highest we saw on a run was 361 tq which was very surprising.

Mike@N54Tuning.com · 02-27-2018, 06:28 PM

Quote:

Originally Posted by lci_340i

yeah baseline tq is really high for stock the highest we saw on a run was 361 tq which was very surprising.

Well you do have downpipes on it..

or was this 100% stock run from another day?

Mike

lci_340i · 02-27-2018, 06:37 PM

Quote:

Originally Posted by Mike@N54Tuning.com

Well you do have downpipes on it..

or was this 100% stock run from another day?

Mike

it was a 100% stock run from around a year ago..

x5mad · 02-27-2018, 10:30 PM

It sounds like your supporting mods make a difference as when I did a dyno with just the jb+ it only added power up to about 4 or 5 k rpm

after that it barely made any additional power over stock.

everything else being equal does it imply the stock systems airflow is causing a bottleneck?

Mike@N54Tuning.com · 02-28-2018, 09:43 AM

Quote:

Originally Posted by x5mad

It sounds like your supporting mods make a difference as when I did a dyno with just the jb+ it only added power up to about 4 or 5 k rpm

after that it barely made any additional power over stock.

everything else being equal does it imply the stock systems airflow is causing a bottleneck?

When raising boost you are raising airflow requirements especially at higher RPM so supporting mods are needed..

Mike

bmw5858 · 02-28-2018, 03:31 PM

Quote:

Originally Posted by Mike@N54Tuning.com

When raising boost you are raising airflow requirements especially at higher RPM so supporting mods are needed..

Mike

There is always the question about Downpipe.. Terry from BMS said it was not required, but some are saying that it's useful to get more gain...

Because my car is on a lease, i was thinking about going jb4 only (already have the MPPSK on my 340i) and i've ordered with Mike the Agency Power intake. Maybe thinking about a catted downpipe (highflow). dont want any code.

mike@x-ph.com · 02-28-2018, 05:42 PM

Quote:

Originally Posted by bmw5858

There is always the question about Downpipe.. Terry from BMS said it was not required, but some are saying that it's useful to get more gain...

Because my car is on a lease, i was thinking about going jb4 only (already have the MPPSK on my 340i) and i've ordered with Mike the Agency Power intake. Maybe thinking about a catted downpipe (highflow). dont want any code.

Congrats on the intake!

You might get a code even with catted downpipes. Get the Jb4 and call it a day

bmw5858 · 02-28-2018, 06:47 PM

Quote:

Originally Posted by mike@x-ph.com

Quote:

Originally Posted by bmw5858

There is always the question about Downpipe.. Terry from BMS said it was not required, but some are saying that it's useful to get more gain...

Because my car is on a lease, i was thinking about going jb4 only (already have the MPPSK on my 340i) and i've ordered with Mike the Agency Power intake. Maybe thinking about a catted downpipe (highflow). dont want any code.

Congrats on the intake!

You might get a code even with catted downpipes. Get the Jb4 and call it a day

So you suggest to only get JB4 and no catted downpipe. Anyway won't change anything on performance as I'll need to run map 1 or 2 and not 3 (cause of MPPSK)

G.Newt · 02-28-2018, 06:51 PM

Quote:

Originally Posted by mike@x-ph.com

Congrats on the intake!

You might get a code even with catted downpipes. Get the Jb4 and call it a day

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

bmw5858 · 02-28-2018, 07:03 PM

Quote:

Originally Posted by G.Newt

Quote:

Originally Posted by mike@x-ph.com

Congrats on the intake!

You might get a code even with catted downpipes. Get the Jb4 and call it a day

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

Do you have stock exhaust or aftermarket one? Which one? And how is the sound? Any throttle closure problem?

G.Newt · 02-28-2018, 07:06 PM

Quote:

Originally Posted by bmw5858

Do you have stock exhaust or aftermarket one? Which one? And how is the sound? Any throttle closure problem?

Look at my sig for my mods. I'm running AWE catback. DP + catback = LOUD AF. The cold start is brutal, but you can drive it not obnoxiously if you keep it under 2.5k RPMs. I don't run a tune nor do I log so I can't comment. You'll most likely need the additional wires to help control the WGDC with the FUA setting in JB4.

MaximusJ · 02-28-2018, 08:32 PM

Quote:

Originally Posted by G.Newt

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

Still waiting to see proofs of said gains with the DP on B58. Been waiting for quite some time actually.

MaximusJ · 02-28-2018, 08:34 PM

Quote:

Originally Posted by bmw5858

So you suggest to only get JB4 and no catted downpipe. Anyway won't change anything on performance as I'll need to run map 1 or 2 and not 3 (cause of MPPSK)

Map 3 over MPPSK might be overkill, but seems ok according to some. But again, every car reacts different to JB4 and the base boost vary depending on the weather.

I, for one, will try it and log some runs with it as soon as my summer rubbers are on. At least two more weeks to go...

Mike@N54Tuning.com · 02-28-2018, 08:47 PM

Quote:

Originally Posted by bmw5858

So you suggest to only get JB4 and no catted downpipe. Anyway won't change anything on performance as I'll need to run map 1 or 2 and not 3 (cause of MPPSK)

Get JB4 and you can always get down-pipe down the road.. Even on Map1 the JB4 makes a HUGE difference.

Mike

G.Newt · 02-28-2018, 09:31 PM

Quote:

Originally Posted by MaximusJ

Still waiting to see proofs of said gains with the DP on B58. Been waiting for quite some time actually.

To be fair, I'm not running any tunes. I dyno'd, and wouldn't have achieved the numbers I did without the downpipe. Obviously I could'be just went the JB4 route and have forgone the DP, but still.

eluded · 03-01-2018, 02:29 AM

Quote:

Originally Posted by MaximusJ

Quote:

Originally Posted by G.Newt

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

Still waiting to see proofs of said gains with the DP on B58. Been waiting for quite some time actually.

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.

Mike@N54Tuning.com · 03-01-2018, 10:57 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.

JB4 with downpipes is a great combo

Mike

02-26-2018, 09:04 PM	#1
lci_340i New Member 17 Rep 20 Posts Drives: 2017 340i Join Date: Jan 2017 Location: beverly hills iTrader: (0)	BMW 340i DYNO RESULTS JB+, CATLESS DOWNPIPE ETC. Had my car dynoed today over at EAS in Anaheim and made some nice power. over 400 WHEEL TORQUE!!. Graph attached. JB+, Burger Intake, VRSF Catless Downpipe, Resonators Deleted, Akrapovic rear section muffler. The numbers: Baseline - 321 hp 353 tq First pass - 375 hp 396 tq second pass - 377 hp 402 tq
	Appreciate 3 eluded3005.00 jeveryday79.50 Beek707.00 Tweet Quote

02-26-2018, 09:20 PM	#2
lci_340i New Member 17 Rep 20 Posts Drives: 2017 340i Join Date: Jan 2017 Location: beverly hills iTrader: (0)	Bimmerpost won't let me upload images for some reason... so here is a link to a picture of the dyno graph. as well as link to the video of a pull on the dyno links: https://photos.app.goo.gl/G4yJeMfETD8crlUT2 Last edited by lci_340i; 02-26-2018 at 09:38 PM..
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02-27-2018, 08:20 AM	#3
bmw5858 Lieutenant 193 Rep 494 Posts Drives: bmw 340i 2018 Join Date: Dec 2012 Location: Montreal iTrader: (0)	Those are solid number for a jb+ considering that the catless downpipe on the new b58 motor doesn't add any power (confirm par Terry at BMS) Baseline TQ seems a bit high for a stock car though.. Anyway the fact is the gain, 55WHP and 49WTQ is great!! Enjoy the ride now! __________________ Bmw 435M 2014 Convertible SOLD! Bmw 340i X drive 2018 New orange sunset, Manual transmission, M performance I & II, M performance front lip, side extension rear diffuser, tinted windows. : SOLD Back in old N55 love! Bmw 335 EBII M performance edition : ER Downpipes, VRSF Chargepipe, VRSF HD 6.5 Intercooler, BM3 Stage 2 93 octane, MPPSK, H&R Spring
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02-27-2018, 10:27 AM	#4
Mike@N54Tuning.com BimmerPost Supporting Vendor 4908 Rep 115,980 Posts Drives: 2007 335i, 2015 M3 Join Date: Dec 2008 Location: N54tuning.com iTrader: (89)	Posted the Dyno for you.. Pretty solid for JB+. Was it on default or cranked up fully? Mike Attached Images
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02-27-2018, 10:30 PM	#9
x5mad Lieutenant Colonel 352 Rep 1,772 Posts Drives: iX 40 Join Date: May 2009 Location: Australia iTrader: (0) Garage List bmw [0.00]	It sounds like your supporting mods make a difference as when I did a dyno with just the jb+ it only added power up to about 4 or 5 k rpm after that it barely made any additional power over stock. everything else being equal does it imply the stock systems airflow is causing a bottleneck?
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