Lookin to get one for my 98 terzo with ppp. are these any good? has anybody had problems with maf sensor when using a 57i.

 

57i is about as safe as it gets! I'd say no more likely to affect the MAF than the standard setup. Provided you don't **** the MAF when installing the thing, of course

 

They sound good, too! They do flow a lot of air, so it would be worth checking out with the experts whether your car would be running too lean, or not.

 

97/98MAF (Hot wire) is not as prone to problems as the Hot Film type fitted to MY99/00 types.

I ran a K&N57i on a MY98 for nearly 2 years with no MAF problems.

Andrew...

 

It does make the car run leaner at points, yes, but doesn't cause the MAF to misread (the reason some kits cause the problem is they change the airflow characteristics past the MAF - the 57i doesn't appear to).
Shouldn't cause any problems unless stacked up with too many other mods