2116 replies to this topic

[oakmere]

Upgrade price From V2 I think will be 375 so about £320 with current exchange rates. I would confirm this with Peter first though.

[CHILL Gone DUTCH]

Upgrade price From V2 I think will be 375 so about £320 with current exchange rates. I would confirm this with Peter first though.

Are you upgrading Martin

[Jetpilot]

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.

 

 

So this is what i should be buying

 

https://fuelperforma...product_id=5928

[CHILL Gone DUTCH]

it would depend on setup 

 

wouldn't want you to buy something which is still to small 

 

do you no what size pulley your using ?

 

 

[Jetpilot]

No, but i can measure or will there be some identification on there?

 

Am i presuming from the list on the parameters if i go bigger its just siemens as an option?

[CHILL Gone DUTCH]

you will be able to ask peter to add extra injectors to the list 

 

from recent conversations on org i think there maybe some more EV14 style injectors added withh bigger CC

[CHILL Gone DUTCH]

Was your harrop bought in the group buy a few years ago if so its likely to be  2.9 pulley 

when i say a few years its probably 3 or 4 years ago now 

[Jetpilot]

Yes the invoices from CS for the work was 2012.

[CHILL Gone DUTCH]

if you are on the 2.9 pulley and reving to 7500 rpm i would say the link you posted the injectors are to small but this would also depend on your cams and how long your inlet cam is open as sizeten mentioned earlier 

 

however im not sure if the time the injectors opperate is adjustable in the software 

so this might be a other thing we should be looking at 

 

[Jetpilot]

One step forward, 2 steps back, think i will just take it too Courtenay, thanks guys

[CHILL Gone DUTCH]

Something as minor as injectors should not really put you off It's just a shame you don't have any info on your setup and how it's runnng Peter has many many files and will advise you on injectors if you so wish If you do take to CS it is ado and forget job Choose wisely and what suits you

[smiley]

Let's take it 1 step back Jetpilot.

What are you trying to achieve (either with switching to obdtuner, or having Courtenay do some work), as i can't seem to get that from your previous posts.

 

[Jetpilot]

I am looking for the same as anyone i guess who has gone obd, the option to be able to make adjustments if necessary (exhaust, injectors, air filter etc) without having to trip up to cs every time, it would also seem obd gives a better map.

 

So i am not looking for big hp gains just the ability to be in control of any changes i may and may not make and if i can optimise the engine/supercharger/fuelling in the process thats a bonus.

Edited by Jetpilot, 28 December 2016 - 02:07 PM.

[Jetpilot]

I am sure the car was owned by a member who had all the work done, but i did enquire before but no response.

 

His name was Nick and from Wiltshire, but do not know the user name.

[CHILL Gone DUTCH]

IS this your car

[Jetpilot]

Yes I bought it from John but he didnt do the work.

[CHILL Gone DUTCH]

http://www.vx220.org...upercharged-22/

[Jetpilot]

Yep got all that and the original ebay ad from when John bought it, but it doesnt answer the questions being asked, inlet etc

[CHILL Gone DUTCH]

Can I a sky the reason for wanting to rather go obdtuner or back to CS

[The Batman]

Wasn't this mapped by cs on obdtuners software I think this is where you are confussling people