have the following config
2.3 stroker
fullrace ex manifold
1000cc
ported TB
M2
FpBlack ported
biggest Perrin IC
AEM EMS

today we started to do some boost and walbro is not enough

I was just wondenring - ppl who have Black at what boost yur walbro dies?

tomorrow going for dyno

 

im still 2.0 at 27lbs and pump wtih 1000cc and still not out of pump or injectors

 

actually I am not out of pump, but pressure goes from 5 to 4.5 and AFR also from 11.9 to 12.4-12.5, we`d added more fuel on high RPM but I am afraid I won`t be able to make more boost on single pump

injectors are at 70%

 

This is confusing. Your fuel pressure should rise at the rate of 4.3bar + manifold pressure as the turbo spools. If your pressure isn't rising above 5 bar, there is another problem.

 

It would also help to know what fuel you are using.

 

euro 98

 

How many miles are on the pump??stock FPR?1.8bar( 26 psi) on euro 98(93 us) you should be fine with a single.

 

Have you done the fuel pump mod? that should help.

 

walbro is OK, but the point is that on 6+rpm on 1.8 boost fuel pressure staring to fall from 5kpa to 4.4 kpa and AFR goes from 11.9-12 to 12.5

 

http://shop.vems.hu/catalog/bosch-fuelpump-p-111.html

Try it. It should outperform walbro. I have RED and 1000cc delphis and 1.8bar boost and no problems.

 

I had Red before Black on RED 2.0 bar was OK