HFS-4 Pre turbo meth injection

hpotaliv · 05-02-2014, 06:45 PM

I am thinking about setting my HFS-4 system to spray 4 jets total into my N54 135i. Two pre turbo (tap one jet into each of my injen intake pipes) and two in the charge pipe. Has anyone done this and if so what size jets would you recommend? I am thinking about running 2 .7mm and 2 1.0mm, I am FBO with Cobb stage 2+ FMIC. Thanks guys looking forward to everyone's thoughts and or experiences!

MuNkY6913 · 05-02-2014, 11:37 PM

There's a thread on N54 tech about someone that did this with E85 (I think). It shows a pretty nice looking setup with an extension through the tip of the intake cone so it sprays right after the filter. Look that up. Might be able to give you some suggestions on nozzle size.

135Pats · 05-03-2014, 12:00 AM

SteveAZ is spraying E85 in the charge pipe, but that's a different ball of wax.

OP talk to Terry over on his forum, he has experimented with pre-turbo meth injection.

hpotaliv · 05-03-2014, 10:39 AM

I couldn't find the thread. So you haven't herd of anyone doing a 30/70 meth mix pre turbo? I cant believe I can not find anyone doing it yet?? Or at least tried it, one would assume it would lower temps far more by having the jet as far away from the TB to ensure complete atomization..

AZ135i · 05-03-2014, 11:31 AM

Quote:

Originally Posted by hpotaliv

I couldn't find the thread. So you haven't herd of anyone doing a 30/70 meth mix pre turbo? I cant believe I can not find anyone doing it yet?? Or at least tried it, one would assume it would lower temps far more by having the jet as far away from the TB to ensure complete atomization..

as soon as it passes through the turbo it would just as warm as the air that is forced through there... I would assume no one is doing it because it doesn't make sense to do it that way. Do it just before the intercooler if you want more time for atomization.

135Pats · 05-03-2014, 12:46 PM

Quote:

Originally Posted by hpotaliv

I couldn't find the thread. So you haven't herd of anyone doing a 30/70 meth mix pre turbo? I cant believe I can not find anyone doing it yet?? Or at least tried it, one would assume it would lower temps far more by having the jet as far away from the TB to ensure complete atomization..

Quote:

Originally Posted by AZ135i

as soon as it passes through the turbo it would just as warm as the air that is forced through there... I would assume no one is doing it because it doesn't make sense to do it that way. Do it just before the intercooler if you want more time for atomization.

Agreed, though I have no first hand experience spraying pre-turbo. Seems like a good deal of risk for minimal benefit, the small size of the stock housings and wheels = HEAT.

Tap the intercooler for best atomization, though ideally we'd all be spraying direct port or something along those lines. That's in the works...

bmw0bsession · 05-03-2014, 04:16 PM

This question belongs on n54tech

05-02-2014, 06:45 PM	#1
hpotaliv New Member 0 Rep 6 Posts Drives: 135i Join Date: Apr 2014 Location: tampa iTrader: (0)	HFS-4 Pre turbo meth injection I am thinking about setting my HFS-4 system to spray 4 jets total into my N54 135i. Two pre turbo (tap one jet into each of my injen intake pipes) and two in the charge pipe. Has anyone done this and if so what size jets would you recommend? I am thinking about running 2 .7mm and 2 1.0mm, I am FBO with Cobb stage 2+ FMIC. Thanks guys looking forward to everyone's thoughts and or experiences!
	Appreciate 0 Tweet Quote

05-02-2014, 11:37 PM	#2
MuNkY6913 The Crowing 119 Rep 2,005 Posts Drives: BMW 135i Join Date: Feb 2010 Location: State College, PA iTrader: (4) Garage List 2009 135i [8.00]	There's a thread on N54 tech about someone that did this with E85 (I think). It shows a pretty nice looking setup with an extension through the tip of the intake cone so it sprays right after the filter. Look that up. Might be able to give you some suggestions on nozzle size. __________________ 2009 135i : BMS JB4 G5 ISO,CXRacing FMIC Kit,Injen Cold Air Intake,Evolution Raceworks Charge Pipe,Walboro Inline Fuel Pump, E85 BMS Backend Flash w/ 60% E85,BMS Meth injection (trunkmount),BMS dual meth nozzles,Spec stage 2+ clutch w/ steel SWFW,BMS Catless Downpipes,Berk Tech Race Axleback
	Appreciate 0 Quote

05-03-2014, 12:00 AM	#3
135Pats Major General 467 Rep 6,478 Posts Drives: A few BMWs Join Date: May 2012 Location: Maryland iTrader: (3)	SteveAZ is spraying E85 in the charge pipe, but that's a different ball of wax. OP talk to Terry over on his forum, he has experimented with pre-turbo meth injection. __________________ E88 N54 Alpinweiss/Coral Red/Motiv HTA 3586r Tial .82AR/Other stuff...652WHP F30 N55 XDrive EBII
	Appreciate 0 Quote

05-03-2014, 10:39 AM	#4
hpotaliv New Member 0 Rep 6 Posts Drives: 135i Join Date: Apr 2014 Location: tampa iTrader: (0)	I couldn't find the thread. So you haven't herd of anyone doing a 30/70 meth mix pre turbo? I cant believe I can not find anyone doing it yet?? Or at least tried it, one would assume it would lower temps far more by having the jet as far away from the TB to ensure complete atomization..
	Appreciate 0 Quote

05-03-2014, 04:16 PM	#7
bmw0bsession Captain 90 Rep 847 Posts Drives: 2011 135i M Sport Join Date: Feb 2013 Location: Burbank, CA iTrader: (3) Garage List 2011 BMW 135i [0.00]	This question belongs on n54tech __________________ BMW Performance Kidney Grille, CF Lip Spoiler, CF Diffusser, Blackline LCI Tailights, Magnaflow Full Exhaust, BMS Intake, Jb4 w/ E85, Meth Injection, BMS DP, VRSF 5" Intercooler, CP-E Charge Pipe, KW CS Coilover, M3 Subframe Bushings, VMR VB3 Wheels, Stage 2 Fuel Pump, M3 Control Arms, Dinan Camber Plates, Pure Stage 2.
	Appreciate 0 Quote