2116 replies to this topic

[CHILL Gone DUTCH]

as above just use the software power measurement, theres enough of us the software now to use the software measurements as standard 

[Exmantaa]

I would put some decent 60lbs injectors (Bosch EV14's...) in that engine and start from there. Owww, and fit an unmodified Z22SE fuel pressure regulator back on the rail.

[Jetpilot]

https://fuelperforma...product_id=5287 Thanks, been looking around today and shall get some ordered, are these the right ones:

[smiley]

You can download the obdtuner client from the site. (asuming you have a windows pc)

Then download a mapping file from the obdtuner forum to unlock all features.

You will see all available injectors, and their corresponding part numbers in the parameters tab.

 

And no, siemens is not bosch.

 

[Jetpilot]

Why do i need Bosch injectors?

[CHILL Gone DUTCH]

BOsch a have a better spray pattern

[Jetpilot]

Any part numbers for whats required?

[smiley]

Like i said; if you download the client you can have a look yourself.

That will help you get comfortable with it, and see all options we talk about.

 

[Jetpilot]

Thanks, although any i can find with that part number are 590cc not 650cc, 

[siztenboots]

those are Corsa VXR ones, they are 613cc (3bar rail)

[Jetpilot]

But not 650cc as per above or they run higher because of fuel rail pressure?

[CHILL Gone DUTCH]

Have you considered getting the Pro version over V2

[CHILL Gone DUTCH]

FYI i run similar power to you and run the siemens 107961 and running at 88% duty cycle on a harrop with 3.1 pulley  

[siztenboots]

do you run with much longer duration inlet cams , in which case you can adjust the injector firing , earlier and for longer duration.

[Jetpilot]

Ok I am now confused, you run the siemens I linked, but recommend bosch and in the parameters section the part numbers dont tally to the cc of either bosch or siemens and sorry I have no idea what pro is over v2, I thought there is only one version of obd.

[CHILL Gone DUTCH]

do you run with much longer duration inlet cams , in which case you can adjust the injector firing , earlier and for longer duration.

 

There not much longer tbh 

[CHILL Gone DUTCH]

Ok I am now confused, you run the siemens I linked, but recommend bosch and in the parameters section the part numbers dont tally to the cc of either bosch or siemens and sorry I have no idea what pro is over v2, I thought there is only one version of obd.

 

Thats why i used the part number rather than the CC as they can be different dependant on fuel pressure etc etc 

 

i do have the siemens but if i end up needing more injectors i would go for a ev14 bosch version 

 

i you get the details of the injector peter will put it in to the software 

[CHILL Gone DUTCH]

As for the PRO version over V2 

PRO is only just completed trials with various users over europe 

 

V2 is very user friendly and you have to do something seriously wrong to do something which will end in disaster 

the PRO version is very new infact ive only just got my original ecu back with the customer version on it, there are many advantages to the Pro version but it wont be for everyone V2 would still be a good place to be 

i will drop Peter a email and see if he will let me post a PDF i have with what the Pro version has over V2 the best thing for me was turning a lot of the original safe protection systems and running dual maps 

[Exmantaa]

shameless copy/paste:

 

=> http://www.hptuners....ll=1#post330636

 

Injector Selection.....and reasons why

The stock injectors are a split pattern dual cone spray injector. There is a huge reason for this, since our motors are a 4 valve design. There is an intake runner splitter right in front of the valves. The proper injector will spray right on the back of both valves for maximum fuel atomization and efficiency....just like the factory injectors does.

And here is a good read too... http://www.usrallyte....ex&cPath=10_44

 

Problem here is most people slap in the Siemens 60 and 80 pound Deka injectors, which are a single pattern cone spray. This intake split is about an inch and a half away from the tip of the injector, so this single 26* cone is spraying right on the split before it is even broader than an inch. This is very very bad, as it causes the fuel to lose its atomization and leads to fuel pooling in the intake as well as very inconsistent transient fueling. This single factor right here is why the idle is so poor with these injectors. Many people tell me they got their car to idle great with these injectors, and I simply have to call bullshit. No way you can get this style injector to idle as smooth as stock. You can get them to idle OK with no surging, but not perfect.

 

The injector I chose is a Bosch EV14 injector, part number 0280158123. You have to use an adapter on the nozzle to make it work, but many injector shops have this adapter. They are slightly longer than 60mm(stock length) at 64.5mm, but I had no trouble since the stock fuel rail is at a 45 degree angle. The spray pattern is a split cone 25* just like the factory injector. They flow 60.5lb/hr @43.5psi, and 72.02@58psi which is the stock LSJ fuel pressure. Another good point is the minimum linear pulse width is .711ms, compared to the 1.4 for the Siemens 60's. This is HUGE for our tiny motors, since idle is typically around 1.2, and deaccel is .7ish. My idle is as good if not better than factory right now, and transient fueling is very smooth with these.

More info about the injector I went with: http://www.bosch-mot....2775993867.pdf

 

I bought them from Fuel Injector Connection in Georgia for about $60 each. That makes them about $100 more than the Siemens, and it is money well spent. Ask for Jon there, and he will know exactly which injectors you need. He will put the tip adapters on them and they will be a direct drop in.

I started with the Siemens 60's, and I can tell you those are a terrible injector for a 4 valve motor. You want the injector to spray on the back of the valves, not at the intake split. Please do some research before you follow everyone else and purchase the Siemens.

Edited by Exmantaa, 27 December 2016 - 09:24 PM.

[smiley]

i will drop Peter a email

 

Ask him when pro is available  in general and what the pricing will be please?