G 37 rev limiter

[DrDan]

Test drove G37 convertible. Funny harmonic engine noise under acceleration under load. Back at dealer revs limited to 4500 rpm. What gives?

[Fezzik]

Rev limiter should be at 7500 rpm. I dont know why it was limited to 4500. Maybe went into limp mode if it detected some sort of problem. The Vert has a different exhaust than the coupe or sedan. I was told to keep it from so loud when the to is down.

[audtatious]

Test drove G37 convertible. Funny harmonic engine noise under acceleration under load. Back at dealer revs limited to 4500 rpm. What gives?

Were you trying to rev it past 4500rpm in park? Engine management won't allow it as a means of protection. If the car is an automatic it will not allow you to do a brake stand burnout either.