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leaning out on the dyno 

 

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 Post subject: leaning out on the dyno
Posted: Tue Apr 19, 2011 9:15 pm 
Stock as a Rock
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Age: 27

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Joined: 6th Jan 2008

Ride: 2 XF's, XE, EA Ghia

Location: Adelaide
SA, Australia

well my EB pulled 182RWKW on 7psi but leaned out, now i know im running a stock ECU still but i dont get why im leaning out. i have a bosch 044 with 24lb injectors an a adjustable reg set to 50psi on idle. got told by the guy who did the dyno run that if i put anymore than 50psi at idle i would fowl plugs just cruising. Its just that ive seen ppl pull 200+ with the same setup, now i am happy with 182 dont get me wrong, just thought i would post this to see if i was missing something. thanks
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 Post subject: Re: leaning out on the dyno
Posted: Tue Apr 19, 2011 11:34 pm 
Getting Side Ways
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Age: 64

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Gallery: 4 images

Power: 482 rwkw

Location: Penrith
NSW, Australia

You could try a 4 to 1 rising rate fuel reg [FMU]???
I don't really like them. They are o/k for small boost like blowers
where boost is very lineal..
Then drop initial fuel pressure down to 38 to 42Lb ??

I'd say you require some spark retard on boost ??
Either J3 port tune or MSD retard box ??

Colder plugs with tighter plug gap with forced induction too...

 

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As in ZOOM 126 edition
331 Dart block,3.25/ 4340 steel crank, Oliver rods,TFS ported track heat heads, TFS track heat inlet Twin SC61 turbo's
Project 1UZ-EF has started.. S475 Turbo 4.0 V8 Mustang Celica.....

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 Post subject: Re: leaning out on the dyno
Posted: Tue Apr 19, 2011 11:41 pm 
Getting Side Ways
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Age: 64

Posts: 3552

Joined: 7th Nov 2004

Gallery: 4 images

Power: 482 rwkw

Location: Penrith
NSW, Australia

You could try a 4 to 1 rising rate fuel reg [FMU]???
http://www.vortechsuperchargers.com/product.php?p=31
I don't really like them. They are o/k for small boost like blowers
where boost is very lineal..
Then drop initial fuel pressure down to 38 to 42Lb ??
Then let the FMU take over...

I'd say you require some spark retard on boost ??
Either J3 port tune or MSD retard box ??

Colder plugs with tighter plug gap with forced induction too...

Better off with stand alone ECU like Microtec, EMS etc...

 

_________________

As in ZOOM 126 edition
331 Dart block,3.25/ 4340 steel crank, Oliver rods,TFS ported track heat heads, TFS track heat inlet Twin SC61 turbo's
Project 1UZ-EF has started.. S475 Turbo 4.0 V8 Mustang Celica.....

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 Post subject: Re: leaning out on the dyno
Posted: Wed Apr 20, 2011 6:15 pm 
Smokin em up
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Age: 32

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Joined: 21st Oct 2010

Ride: turbo falcon

Location: adelaide
SA, Australia

Gday mate, you need some kind of system to raise fuel pressure under boost if your going to keep those injectors on stock ecu/tune. Vortech 12:1 fmu will work well (ive found the cheapo ebay ones dont work properally), or pm me for details/price on our rising rate fuel system. Ive made 240rwkw on 24lbs injectors @100psi fuel pressure.
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 Post subject: Re: leaning out on the dyno
Posted: Wed Apr 20, 2011 10:43 pm 
Getting Side Ways
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Ride: 66 Coupe

Location: Perth
WA, Australia

the higher the fuel pressure the less chance the injectors have of opening correctly.

If your maxing the injectors, then i would recommend looking at upgrading the injectors to 36 or 42# injectors and retuning to suit, you wont get any more power from the 24# injectors with the correct amount of fuel pressure
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 Post subject: Re: leaning out on the dyno
Posted: Wed Apr 20, 2011 10:52 pm 
Stock as a Rock
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Age: 27

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Joined: 6th Jan 2008

Ride: 2 XF's, XE, EA Ghia

Location: Adelaide
SA, Australia

i was using a 12:1 fmu but it fuked up only pulled 170 wit it an i leaned out. 24lb injectors should be good for 220 easy i thought, i have bosch black leads an plugs wit a .8mm gap. I do intend on getting a J3 chip wit some 42lb injectors. Atm im using a adjustable rising rate reg only becos a mate is using one on his turbo Eseries wit success. His is set to 60psi at idle an i even know of another Eseries running 75psi at idle (very rich)
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 Post subject: Re: leaning out on the dyno
Posted: Thu Apr 21, 2011 10:29 am 
Getting Side Ways
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Age: 64

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Power: 482 rwkw

Location: Penrith
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Yep using 12 to 1 forces injectors to open statically essentially just dumping fuel...
Up to a point these work.. They put MASSIVE pressure on your fuel pump to deliver
the amount of fuel..
Another thing.. These can be made to work on dyno but for every day motoring ??
They can have there issues...

Yep some 36 / 42 Lb injectors and tune to run them with Walbro 225 in tank pump...
The std fuel reg is rising rate at 1 to 1...

Btw leaning out on dyno is not safe!! Be aware of OHS.. Lol...

 

_________________

As in ZOOM 126 edition
331 Dart block,3.25/ 4340 steel crank, Oliver rods,TFS ported track heat heads, TFS track heat inlet Twin SC61 turbo's
Project 1UZ-EF has started.. S475 Turbo 4.0 V8 Mustang Celica.....

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 Post subject: Re: leaning out on the dyno
Posted: Thu Apr 21, 2011 7:32 pm 
Smokin em up
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Age: 32

Posts: 211

Joined: 21st Oct 2010

Ride: turbo falcon

Location: adelaide
SA, Australia

I dont like running more than 100psi even though ive tested up to 120psi with no injector problems. Your hardly ever goin to be on full boost for more than 10-15 secs at a time in a decent powered street car so providing your using a decent high pressure pump its not too bad, not ideal but works on a budget. The problem ive found with most cheap 12:1s is they are all over the place pressure wise, on boost might be 100psi then next time only 80psi if your lucky, most wont raise over 60psi if at all, or stick on full fuel pressure. Why not try them extra injectors off a boost switch if you have no cash atm, better than lean as.
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 Post subject: Re: leaning out on the dyno
Posted: Fri Apr 22, 2011 11:22 am 
Getting Side Ways
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Age: 64

Posts: 3552

Joined: 7th Nov 2004

Gallery: 4 images

Power: 482 rwkw

Location: Penrith
NSW, Australia

Bigger injectors and talk to these guys...
http://www.tiperformance.com.au/index.php

 

_________________

As in ZOOM 126 edition
331 Dart block,3.25/ 4340 steel crank, Oliver rods,TFS ported track heat heads, TFS track heat inlet Twin SC61 turbo's
Project 1UZ-EF has started.. S475 Turbo 4.0 V8 Mustang Celica.....

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 Post subject: Re: leaning out on the dyno
Posted: Mon Apr 25, 2011 3:37 am 
Parts Gopher
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Age: 42

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Joined: 21st Feb 2010

Ride: FG XR6 TURBO

Location: BLACKTOWN
NSW, Australia

mate u can read alot of rubish on here and get the wrong info but again u can get some good info ..my mates ef is running 12/1 obx reg from the states, bosch fuel pump standard ecu nothing done to it and au xr8 injectors it was running lean on the dyno, after the injectors were installed ran sweet his car is pushing 220 rwkw not a bad effort for a standard engine ,,,im havnt finnished mine yet simular set up just having issues with the o2 sensor,have u checked all the fuel systems lines,filter ect could be other probs ,,just a thought ..............

 

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 Post subject: Re: leaning out on the dyno
Posted: Wed Apr 27, 2011 10:43 pm 
Stock as a Rock
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Age: 27

Posts: 130

Joined: 6th Jan 2008

Ride: 2 XF's, XE, EA Ghia

Location: Adelaide
SA, Australia

i installed the FMU again an it ran rough as huts on boost so gonna ditch that, but fuel filter has been changed, havent checked all the lines but was gonna this weekend. might chuck the 19lb injectors back in just to see if it runs any better cos a mech from my works said the spray pattern might of fuked up cos i put diff injectors in. but gonna buy a J3 in the next month anyways an get it runnin propely
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 Post subject: Re: leaning out on the dyno
Posted: Wed Apr 27, 2011 10:55 pm 
Getting Side Ways
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Location: melburn
VIC, Australia

put the standard injectors in and use the 12:1 rising rate reg and run it on the lowest boost setting possible.
that way a least it will run normal off boost and give you some ability to drive it on boost - but avoid boosting it.

buy the J3 chip, put the adjustable fuel reg on with your 24lb injectors and then use the J3 to tune it.
you will be able to tune injectors and spark upto 10psi through the J3 meaning there is no need for the 12:1 rising rate reg, doing it this way will ensure more accurate fuel delivery.

i would never, ever run a falcon boosted with a standard ECU and no tuning done as the final setup - even with the 12:1 reg.

you got all the right info on boosted mate, you're on the right track, just have to wait til you get the J3 chip, resist thrashing it until then or you will melt a piston :)

 

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XG Panelvan
mild engine, EL ECU & J3, HI6 & MSD coil

in the shed - .595" lift cam, GT4202, forged AU engine, ems 4424 ecu, glide & 5500 stall - next-bellhousing

XH ute daily - DOHC BA XR6 engine, T5, AU3 ECU, J3 chip, wideband & logger, ported BBM, 3" intake

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 Post subject: Re: leaning out on the dyno
Posted: Wed Apr 27, 2011 11:09 pm 
Stock as a Rock
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Age: 27

Posts: 130

Joined: 6th Jan 2008

Ride: 2 XF's, XE, EA Ghia

Location: Adelaide
SA, Australia

seems where on this topic lol opinions??

http://cgi.ebay.com.au/ws/eBayISAPI.dll ... K:MEWAX:IT
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 Post subject: Re: leaning out on the dyno
Posted: Wed Apr 27, 2011 11:37 pm 
Getting Side Ways
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Posts: 807

Joined: 28th Oct 2008

Location: melburn
VIC, Australia

get the chip and burner through jason at tiperformance.com.au
he will provide support through these forums and there is a much larger user base (ie. general falcon owners) who have experience tuning their own cars using his chip and tunerpro RT.

to give you an idea, there is alot of info and support on the site (http://www.tiperformance.com.au/technical.html) including a tuning guide (http://www.tiperformance.com.au/Technic ... 0Guide.pdf)

 

_________________

XG Panelvan
mild engine, EL ECU & J3, HI6 & MSD coil

in the shed - .595" lift cam, GT4202, forged AU engine, ems 4424 ecu, glide & 5500 stall - next-bellhousing

XH ute daily - DOHC BA XR6 engine, T5, AU3 ECU, J3 chip, wideband & logger, ported BBM, 3" intake

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 Post subject: Re: leaning out on the dyno
Posted: Thu Apr 28, 2011 10:37 am 
Getting Side Ways
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Age: 34

Posts: 3406

Joined: 7th Feb 2005

Ride: AU2 Ute

Location: melbourne
VIC, Australia

Jesus Christ brother.

You need to stop pinching every last penny or your setup is never going to work.

Buy a proper Vortech FMU and get a chip off Jason.
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