42# injectors.. 440cc

DomWoo · Post by **DomWoo** » Sat Jun 24, 2006 12:39 am

i found some injectors at a killer pirce but they are 42# injectors and im thinking the stock injector is like 19# injector so thats more then double the injector size.. i can controll a larger injecter with my Emanage but i was wondering if it would be wise to stay with a smaller injectore like 24#?

GsiTurbo · Post by **GsiTurbo** » Sat Jun 24, 2006 4:58 am

You need to do some math first:

Target horsepower (crank):
Your current fuel pressure min (psi):
Your current fuel pressure max (psi):

Now...at what psi are the injectors rated at? (prolly 45psi, but that varies).... I posted a while back link in MMamdouh's thread about nice page with injector size calculators, you will have to look for that.

So, since e-manage can handle 150% +/- of stock injector, the only item you need is 1:1 FPR. Now...for idle (say 18Hg of vacuum) you can run the fuel pressure at very little 25psi or so...then you would use e-manage to fine-tune the pulse-width for smooth motor operation. As the vacuum decreses, presure will raise 1psi per 1psi of change, so if you are running 10psi of boost, for example, you will end up with 53psi fuel pressure (if your fuel pump can handle that - if not say it will be 45psi). Then, with wide-band O2 you can tune injectors using e-manage for proper air-fuel....and voila, you are in the races

At try to keep injectors below 90% rated duty cycle.

Hope this helps,

Tom

DomWoo · Post by **DomWoo** » Sat Jun 24, 2006 5:16 am

well i ordered them!! 120$ for 4 bosch injectors.. not bad if you ask me!!! they are all balanced and blue printed and are all matched to within 2%

GsiTurbo · Post by **GsiTurbo** » Sat Jun 24, 2006 5:20 am

DomWoo wrote:well i ordered them!! 120$ for 4 bosch injectors.. not bad if you ask me!!! they are all balanced and blue printed and are all matched to within 2%

Damn...such prices should be made illegal

Nice find! Oh, and do you have the Injector Harness for the e-manage, right??

DomWoo · Post by **DomWoo** » Sat Jun 24, 2006 5:21 am

they got one more set

yeah i got that too

klonek78 · Post by **klonek78** » Mon Jun 26, 2006 5:53 am

DomWoo wrote:i found some injectors at a killer pirce but they are 42# injectors and im thinking the stock injector is like 19# injector so thats more then double the injector size.. i can controll a larger injecter with my Emanage but i was wondering if it would be wise to stay with a smaller injectore like 24#?

with larger injector you could have problems with engine starting. Emanage won't help you in this case - only chip remap.

pollito · Post by **pollito** » Mon Jun 26, 2006 3:09 pm

Do you have a link for your purchase?

DomWoo · Post by **DomWoo** » Mon Jun 26, 2006 10:26 pm

klonek78 wrote:
DomWoo wrote:i found some injectors at a killer pirce but they are 42# injectors and im thinking the stock injector is like 19# injector so thats more then double the injector size.. i can controll a larger injecter with my Emanage but i was wondering if it would be wise to stay with a smaller injectore like 24#?
with larger injector you could have problems with engine starting. Emanage won't help you in this case - only chip remap.

i can remap the injectors with emanage and it says in the manual that when using larger injectors all you have to do is enter the stock size and the new size and it will readjust the maps automaticly for starting purposes

klonek78 · Post by **klonek78** » Mon Jun 26, 2006 10:30 pm

DomWoo wrote:
klonek78 wrote:
DomWoo wrote:i found some injectors at a killer pirce but they are 42# injectors and im thinking the stock injector is like 19# injector so thats more then double the injector size.. i can controll a larger injecter with my Emanage but i was wondering if it would be wise to stay with a smaller injectore like 24#?
with larger injector you could have problems with engine starting. Emanage won't help you in this case - only chip remap.
i can remap the injectors with emanage and it says in the manual that when using larger injectors all you have to do is enter the stock size and the new size and it will readjust the maps automaticly for starting purposes

everything depends on ECU and mods. Emanage is "only" piggyback like SMT6/7

DomWoo · Post by **DomWoo** » Mon Jun 26, 2006 10:41 pm

klonek78 wrote:
DomWoo wrote:
klonek78 wrote: with larger injector you could have problems with engine starting. Emanage won't help you in this case - only chip remap.
i can remap the injectors with emanage and it says in the manual that when using larger injectors all you have to do is enter the stock size and the new size and it will readjust the maps automaticly for starting purposes
everything depends on ECU and mods. Emanage is "only" piggyback like SMT6/7

what do you mean depends on ECU and MODS?

it is turbo charged and has been running the emanage with the stock injectors for about a year now. it also has a fully programable msd ignition system and a adjustable FPR

im kinda confused at your openion and knowledge on piggyback systems? do you have one?

klonek78 · Post by **klonek78** » Mon Jun 26, 2006 11:02 pm

DomWoo wrote:
klonek78 wrote:
DomWoo wrote: i can remap the injectors with emanage and it says in the manual that when using larger injectors all you have to do is enter the stock size and the new size and it will readjust the maps automaticly for starting purposes
everything depends on ECU and mods. Emanage is "only" piggyback like SMT6/7
what do you mean depends on ECU and MODS?

it is turbo charged and has been running the emanage with the stock injectors for about a year now. it also has a fully programable msd ignition system and a adjustable FPR

im kinda confused at your openion and knowledge on piggyback systems? do you have one?

yes I have and I have tuned few cars...... also with Emanage and they works fine

I had problem with my car for example. I put bigger turbo, injectors (320cc) and bigger mapsensor (2,5bar) and none of piggyback was able to start my engine smoothly (AFR was far too rich) but I had no any other problems...

DomWoo · Post by **DomWoo** » Sat Jul 01, 2006 12:36 am

got the injectors in and started the car.. it starts and idles fine.. havnt drivin it because some how i forgot to plug in the water temp sensor when i changed out the head.. and now i got no temp reading!!!

Post by **PrecisionBoost** » Tue Jul 04, 2006 2:59 am

I'm not sure where the water temp sensor is located on the 1.6L but it's fairly easy to setup a new location if you can't get to it now that the head is installed..... you could cut your radiator hose and insert a tube with a welded bung matching the sensor thread.

DomWoo · Post by **DomWoo** » Tue Jul 04, 2006 7:52 pm

actaully it was simple... but took 3 hours to figure out how simple it was lol...

all i had to do was loosen the altenator and slide it all the way back.. and its right between the head and the altenator

well i have been playing around with the emanage and seeing how to make the car run as good as possible.. right now the egt idles at 750' to 800' and is a bit shaky

with the emanage set for the new injectors i put in 180cc for stock and the 440cc for the new and it starts really good and idles good i just dont know where to begin tuning this thing with out a dyno. and i dont have one for many many miles around

ive drivin it up and down my street not boosting and the egt runs at about 1000'

i got a fuel pump ordered because the stock one is shot.

i was looking into getting a wideband o2 but i have to save some money for the time being so thats next on the list

Nubira2.2 · Post by **Nubira2.2** » Tue Jul 04, 2006 8:16 pm

to be able to tune it on the streets u wil need a WB O2 sensor

or u just gona be pulling over to chek the spark plugs for mixture

is the e-manage good ?

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42# injectors.. 440cc

42# injectors.. 440cc

Re: 42# injectors.. 440cc

Re: 42# injectors.. 440cc

Re: 42# injectors.. 440cc

Re: 42# injectors.. 440cc

Re: 42# injectors.. 440cc