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E36General discussion and technical help for (E36) 1992-1999 3 series cars. 318, 323, 325, 328.
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Your Ride: 93' 325i
I dont think its illegal. I mean, theirs certain things that arent allowed, like with smog checks, they said the intake was illegal or just not permitted. But i know the guy personally, So he passed me anyways.
no. the limiter is placed on your vehicle because it's the peak RPM that the factory would garantee engine parts. Anything above that set RPM - you're on your own. Also it's usually "capped" there because there is a huge power band drop off just beyond that point.
Re: chips - they're a compromise or let you contour your power band to your driving. I bought mine because I wanted a stronger mid range "pull" instead of flattening out and it continues to pull well into the 6k RPMs. OEM chips are generally set for a comfort/performance & drivability curve or a compromise for mileage and city/hwy driving.