valver not running fast as should

[Wilkeh]

Right... ive got a standard valer 1994. Theres no mods on the car, the only thing ive done is drilled a few holes in the airbox. I done think this has affected performance im not sure, but at the moment im having trouble over taking VTR's. Surely i shouldn't have a problem with these. The car is 12 years old so fair enough its lost abit of power, but i hate VTR's. Because ive drilled the airbox cud this make me lose power? As sucking in hot engine bay air. I have no idea :/ Someone advise me... :'(

 

[MATT BLACK]

Drilling an airbox will slow your car down on most vehicles - its an old boy racers trick that doesnt work. If your gonna mess about with your filter stick a cold air feed on direct to your throttle body with an in line free flow filter. If you still think the cars lacking power take it to a rolling road specialist who will do a power run on your car and then tell you what you need to do to improve power

 

[Wilkeh]

im not a boy racer m8, its just a cheaper way to sound nice, and trust me, its sounds gawjus

 

[Middo]

listen to matts advice he knows what hes talking about. dont drill holes in the airbox, might sound good but will destroy power in most cases. If you want a nice sound, get a cheap open air filter, will prob still loose a bit of power but not as much

 

[White16valver]

As a question, how do companies 'tune' standard cars? Can you tweak the ecu? or is it just the case of altering the timing and mixture? Can you even do that on a car with a standard ecu??

Sorry for the hijack lol

 

[MATT BLACK]

Yes you can alter the fueling / advance are r****d the ignition for tuning purposes even on standard Manufacturers ECU's. For example Chris n Nic have just taken there 172 cup to chip wizards in Rochdale and he managed to abstract 197 bhp from there engine on a standard Renault ECU.