New turbos=huge turbo lag

TnVideoMan · 04-25-2012, 03:44 PM

As title states just had new stock turbos installed and have horrible turbo lag now dealer is blaming the aftermarket intercooler which is bs imho.Anyway my question is should I put jb4 back on to see if fixes the problem or should I ask about new program for stock ecu I have no clue what version is on it now.Car ran great before the stockers died no lag at all now like driving a Fiat 500 till bout 3000rpm.

onebadmofo · 04-25-2012, 03:55 PM

Sounds like a boost leak. Any air escaping sounds during boost?

dlbrooks18 · 04-25-2012, 03:55 PM

I think it's the new software... put your tune back on, see how it feels then.

Jeff@TopGearSolutions · 04-25-2012, 03:55 PM

Quote:

Originally Posted by dlbrooks18

I think it's the new software... put your tune back on, see how it feels then.

+1

Carl Morris · 04-25-2012, 04:02 PM

Yeah, time for a leak test.

marv85 · 04-25-2012, 04:06 PM

I think he didn;t have the newest software which causes the lag.

TnVideoMan · 04-25-2012, 04:15 PM

Quote:

Originally Posted by onebadmofo

Sounds like a boost leak. Any air escaping sounds during boost?

No man I have looked cant find boost leak anywhere and no cel either.

Beemw335 · 04-25-2012, 04:32 PM

First thing to do is put the jb4 and if you still have huge lag then its a boost leak or the wastegate actuators??
Anyways log with the jb4!

TnVideoMan · 04-25-2012, 05:11 PM

One more question with car having lag before jb4 reinstall will I get full potential of it.Maybe a stupid question but im new to this stuff.

marv85 · 04-25-2012, 05:20 PM

Quote:

Originally Posted by TnVideoMan

One more question with car having lag before jb4 reinstall will I get full potential of it.Maybe a stupid question but im new to this stuff.

If the lag is indeed caused by the software problem then its a matter of tuning and you will still get the full benefit of the JB4. however if you do have a boost leak, then you won't get full benefit out of anything. At that point, use the JB4 to log. that would help you determine if you have a boost leak or other issues

04-25-2012, 03:44 PM	#1
TnVideoMan Private 4 Rep 50 Posts Drives: 08 e90 335i Join Date: Jun 2011 Location: Maryville,Tennessee iTrader: (1)	New turbos=huge turbo lag As title states just had new stock turbos installed and have horrible turbo lag now dealer is blaming the aftermarket intercooler which is bs imho.Anyway my question is should I put jb4 back on to see if fixes the problem or should I ask about new program for stock ecu I have no clue what version is on it now.Car ran great before the stockers died no lag at all now like driving a Fiat 500 till bout 3000rpm.
	Appreciate 0 Tweet Quote

04-25-2012, 03:55 PM	#2
onebadmofo Colonel 346 Rep 2,396 Posts Drives: 2008 E90 M3 Join Date: Aug 2010 Location: Central NJ iTrader: (14)	Sounds like a boost leak. Any air escaping sounds during boost?
	Appreciate 0 Quote

04-25-2012, 03:55 PM	#3
dlbrooks18 Brigadier General 161 Rep 3,736 Posts Drives: e90 335i Join Date: Nov 2008 Location: Los Angeles iTrader: (2)	I think it's the new software... put your tune back on, see how it feels then. __________________ 2008 E90 335
	Appreciate 0 Quote

04-25-2012, 04:02 PM	#5
Carl Morris Captain 19 Rep 650 Posts Drives: 2008 335xi 6MT Join Date: Feb 2012 Location: San Jose, CA iTrader: (0)	Yeah, time for a leak test.
	Appreciate 0 Quote

04-25-2012, 04:06 PM	#6
marv85 Colonel 70 Rep 2,626 Posts Drives: '07 E92 335i MT Join Date: Jun 2010 Location: Bay Area iTrader: (7)	I think he didn;t have the newest software which causes the lag. __________________ '07 E92 335i 6MT- HP650, inlets/outlets, ER FMIC, VRSF CP, LPFP stg2, CSF rad, 'is Aux rad, ER OC, Ohlins, M control arms, eibach front sway bar. '05 C55 AMG SOLD - '22 Tesla M3P \| '10 E92 335i M, 6MT COBB, FBO, st2 LPFP, Mfactory LSD \| '07 E90 335i, PTF COBB E50, FBO, HFS4
	Appreciate 0 Quote

04-25-2012, 04:32 PM	#8
Beemw335 Colonel 62 Rep 2,013 Posts Drives: 335i Join Date: Mar 2011 Location: My car is my home iTrader: (2)	First thing to do is put the jb4 and if you still have huge lag then its a boost leak or the wastegate actuators?? Anyways log with the jb4!
	Appreciate 0 Quote

04-25-2012, 05:11 PM	#9
TnVideoMan Private 4 Rep 50 Posts Drives: 08 e90 335i Join Date: Jun 2011 Location: Maryville,Tennessee iTrader: (1)	One more question with car having lag before jb4 reinstall will I get full potential of it.Maybe a stupid question but im new to this stuff.
	Appreciate 0 Quote