I fitted A K&N induction kit from Graham Goode onto my 2002 sti. All seems well until you get to about 105mph and then it seems to be struggling to get enough air. Any suggestions would be appreceiated!!!

If it is running too lean you may need a new set of pistons next!

Les :eek:

Eh? You just fitted an induction kit yet you say it's struggling to get enough air?

As Les has intimated, the reality probably is that your new induction kit is making the MAF sensor misread. So, instead of not enough air, your engine is actually getting too much air, and not enough fuel.

This situation leads to raised cylinder temperatures, detonation, and, if not corrected, a blown engine, which, thanks to your removing the standard airbox and filter, will not be covered by warranty.

The standard induction on these cars is very effective, especially so in the new age models as it draws cold air direct from the air intake. Thus, the advantages of induction kits are negligible - certainly not enough to outweigh the risks involved in running them.

Suggest you remove the induction kit and refit the standard parts ASAP. If you want to help your engine's breathing, fit a K&N or Green panel filter instead.

Thanks for the advice guys. Have now reftted the original airbox and will put it down to expensive inexperience!

If you haven't marked it, see if the shop will accept it back in return for a panel filter.