What injectors to use

[prj]

Yes, I think so.

[Thuppu]

But even then, how far do you really want to go on the stock ECU? Anything much over 500 hp without antilag is quite useless.

I was told the turbo could handle 550hp(I don't know if it can?), so it would be nice to get "all" out.

[prj]

I think 550cc injectors at 4 bar should be fine for close to that level.
You are not planning to rev much higher than stock limiter anyway...

[Thuppu]

Max. 8000rpm.

[prj]

Max. 8000rpm.

And you got all the parts to make that happen?
You are not going to rev to 8000 rpm without some major modifications to the engine.
All vibrations are magnified so much...
Also not sure how well stock cams will work at that level.
Perhaps someone can speak from experience what is needed on 2.2T for 8000 rev limit (rods, valve springs, cams... what else?)

If you are dropping that kind of money on the engine, then maybe it is a good idea for you to go Autronic or VEMS. It will be a very small cost compared to the engine build.
In that case you can use any injectors you like.

[Thuppu]

rods, valve springs, cams... what else?

Don't know..? I'm gona put stiffer springs. Already have the rods, cams, adjustable pulley and sprocket. Like I sayd, max 8000rpm, could be also like 7600-, 7800rpm, something that works fine..? Now it's revving fine to the revlimiter...

[prj]

Don't know..? I'm gona put stiffer springs. Already have the rods, cams, adjustable pulley and sprocket. Like I sayd, max 8000rpm, could be also like 7600-, 7800rpm, something that works fine..? Now it's revving fine to the revlimiter...

What is your revlimiter at now?
Your current turbo is not big enough for 8000 rev limiter.
There is not much point in setting the limiter much past peak hp anyway.

[Thuppu]

7200rpm(stock?). With my current turbo(5855A/R.63) the peak hp seems to be at 6740rpm's. With the new turbo(CTBB5658A/R.84) it could maybe be higher..?

Nice chat we have here.

[prj]

Yes, it will be higher.
But high enough to need 8000 rpm limit? Not sure about that.

Maybe someone who has run that turbo on I5 can comment...

[Thuppu]

Well, it doesn't need to rev up to 8000rpm, but if it's possible then it's ok.

Found some comments by Bram who used a slightly different BB CT355(5560A/R.63).

Found also a bigger CT5662(A/R.63?) dyno plot. Hmm, Dekas seems to be on quite high load... maybe 550cc EV14 would not be enough..?

[prj]

Fuel pressure is important to know also.