ive got an renault 19 1.4 energy rni and ive got an 5 inch back box wat eles can i put on to give me more power its got about 90 bhp but ive just got a superchip its got an extra 25 bhp but can i fit twin webers or can i not

Not sure about the webbers but you have changed the air filter yet?

no its standard mate

You ought to try fitting a cone filter or induction kit as that will make the engine breathe a lot easier and isnt too expensive. Itll also make it sound a lot more meaty when you accelerate. Ive had several induction kits from Pipercross and K&N before and theyve all been weel worth the outlay. Im not sure about carbs though (ive never had any experience with them)

Hope that helps

ok thanks for that mate