blacktop rev limiter issue

[LAC99]

Hi all, I recently finished installing my 20v silvertop (with a blacktop ECU) in an SR5. I´m not sure if i´ts wrong but the rev limiter appears to be set around 7500 rpm (using the SR5 tachometer). What´s the stock RPM limit for the blacktop ECU, 8000? I think the tachometer is ok because the idle RPM is around 900. I´ll try using another tachometer but I wanted to find out if it was a known issue. The engine runs fine, it seems quicker than other 4AGs i´ve raced against.

Thanks!

[The Doctor]

stock blacktop limit is 8500

[LAC99]

thanks, something is very wrong then, it´s a very large RPM difference for a tachometer issue. any ideas of why is the limiter set so low? I once read in another forum something about the 20v ECU setting the limiter around 7200 when the speed sensor was disconected or something like that? I tried to look for that post but I couldn´t find it.

[Michel H]

I think the silvertop retards the limiter to 7200/7500rpm or something when you disconnect the speed limiter, but for sure not the blacktop, I always drive with the limiter and it works perfect. RPM tacho's can differ I guess, because a friend of mine has a AE101/Blacktop , limiter reads @ 7400rpm and my AE92/blacktop reads @ 8200rpm.