Ivo_puma/1.4

Hey there everyone
As my title says i ve recently trade some parts i had for the injectors. I was very happy with the trade but. The car isnt. At 4500 rev he just stop reving. Its like the ecu just cuts the fuel. I need some help to solve this

oldford

If the 1.7 injectors are larger than the ones from the 1.4, the engine is overfueling.
Why did you change the injectors? Any other changes?

Ivo_puma/1.4

I changed the spark plugs and i did a ram air intake. But i guess isnt enough to burn all fuel in the chamber.

oldford

Just go back to the original injectors.

RichieST

iTrader: (2)

No need to change injectors unless you are running forced induction etc and the original injectors can't supply enough fuel.

Put the standard ones back in.

Ivo_puma/1.4

Thats what i did today. What mods i ve to do to use the 1.7 injectores? I just want puma has little bit more power on 4th and 5th gear

turbolee

if you want more power stick the 1.7 engine in

zetec-Sam

iTrader: (2)

The injectors will do fuck all. If you want 1.7 power, fit a 1.7 engine...

Ivo_puma/1.4

U both right but i havent Ł enough to do it. And the 1.7 engines in portugal are expensive with out the loom. I just want to improve the engine i ve.

Straight_4_N/a

the 1.7 injectors are flowing to much as the ecu thinks there stock injectors, To correct this you would need a remap or a piggyback ecu but all it will do is drop the flow back to stock meaning $800 and your still at sq 1 with the same power. Best thing to do is refit old injectors before you damage the engine..

As for mods if i was you upgrade to a 1.6 engine, needs very little to upgrade and very cheap.