Injectors- 4 big or 8 small??

I had the car set up with the WOLF3D this weekend. The power has stayed the same but the filter in the fuel tank is blocked, yes I know I sould of checked that before I tuned it. The car is starving at high rev and the injector duty cycle is up at 96%.

Once I clean the filter in the tank I will get more fuel but still not enough I think. Now I have 6 brand new injectors off a Ford 4.0lt 6 cylinder, do I fit extra injectors or go for 4 450cc. If I fit extra injectors it wont cost anything, but is there any down sides?? I have to get the car tuned again but this time it will have to be in DBN 😢 .

I'd go for the 450cc's rather than the banked sets... I think its easier to tune... But I can't really comment

The Calibrator will be able to tell you.

But something is telling me, that there is something fishy if you are running at 96% duty cycle on the stock injectors and rather stock setup? And it wasn't runing that 96% duty cycle before the tune/ecu replacement?

Ja I wanted Duane to tune it but he said I wouldnt be able to get the car started and tuned in the time I had. The car is smooth but it could of made more power with a better tune. I had the car fired on Sunday but only got onto the dyno on Tuesday :x what a waste of a day.

Ja I spoke to him on Sunday when I dropped the car off... One can't really build a map for the car in a day... You need about a week to do so, if you think of it, they guys that program our stock ECU's take months to map it and to compensate for all the variables... and now you/we try to redo it in a day... 😉 Food for thought.

I do understand that it cannot be done in a day, but 2 days would give a fairly desent map. The car is driving very smoothly, the power torque delivery is flat and comfortable to drive, I just would liked to of made more power.

I know the fueling is a major problem so once the filter in the tank is clean it will make a huge difference, but will need another tune 😢 .

I would go for 4 injectors. 8 will work but it's just a hassle to fit them, welding etc. Oh and a personal reason why I wouldn't use it is there's always that extra risk of breaking a engine. With 1 injector per cylinder, if that one fails it will just not run on it, but if there's 2 injectors and one fails the other one still injects fuel but that cylinder will run lean and probably break something. It can when you are running just one injector but using just one reduces the risk.

Gary you wanted to fit the Wolf and tune it in a 2 or 3 days.

I would stick to 4 inj for the reasons Hennie said above and getting the 2nd set aligned and sprying in the right direction without the spray impinging on the 1st set is a real mission.

However if the car was running fine before the wolf whats the problem now? Have you replaced the fuel pump at all?

The car has a walbro fuel pump, but has used the same fuel pump as always. Not sure whats the problem with it.

What about a staged 5th injector??

What power are the STD injectors good for??

I would say around 260hp on the safeside.