When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I have a 99 vert and I can say for sure that mine has kicked in right at about 6200. Defintely not 6K as I hit this many times during track events without interuption. This is just what I have noticed on my car.
Mine's set at 6700 rpm. :thumbs:
Of course the object is to not hit the rev limiter which protects your engine parts, because if you do, it's going to shut down your engine's ability to accelerate momentarily!:( Hitting it even for just a moment will cost you in a race or at the track! :rolleyes:
Before my current mods, I bought a HPP3, and changed the rev limiter to 6400, which is supposed to be about the limit, on taking chances with the stock LS1 engine. So I've been told anyway. :) With one of these simple programmers, you can change your shift points so this doesn't happen, on an A4. Obviously you're going to want to shift prior to the rev limiter setting. :D
Since you are dealing with an activity that is being timed in fractions of a second, the impact will be signifcant. The time it takes you and your motor to recover from such an event, is lost time which cannot be made up.
In the case of a six speed, he must watch his rpms closely or use a shift light I would think, but in your case MC, since you drive an A4, your shift points need to be altered, so that you are shifting one or two hundred rpm before the rev limiter setting, and reset the rev limiter to that recommended for your cam/springs set up.
I had my stuff set by 21MC, but a person who doesn't want to use a tuner could still set their own shift points with a hand held programmer.
A) slipping or
B) programmed incorrectly or
C) shifting yourself or
D) all of the above :)
If it's bad enough you'll hang on the limiter and not be able to complete the shift which will whack your times of course. I know of at least one guy that decided it was faster to go through the traps on the limiter in 3rd rather than shift to 4th, but that was a six speed and you know how those guys are. :jester
Did this start all of a sudden or gradually get worse?
I have a 99 vert and I can say for sure that mine has kicked in right at about 6200. Defintely not 6K as I hit this many times during track events without interuption. This is just what I have noticed on my car.
Mark, for the record, redline and rev limiter are two different values GM cites for the LSx's. Redline is a value the engineers set as a "voluntary" throttle back-off point for the driver and is designated on the tach as the beginning of the red section of the gauge demarcations. The rev limiter is designed to cut fuel to the engine because the redline has been exceeded and engine damage and/or failure is imminent. The rev limiter is a physical fail-safe built into the control system which actively prevents catastrophic engine failure regardless of the driver's actions. Rev limit for the LS1 is set at 6200 - 200 rpm beyond redline. For the LS6, it's 6600 or 100 rpm beyond redline.
So when you say your's kicked in at 6200, this is what one would expect since you drove through the indicated redline engine speed on your tach.
And if you raise your rev limit, you chance floating the valves. According to Lingerfelter, float them once and the valve springs are shot and need to be replaced. Just my 2 cents. :jester
I had this problem manually shifting my A4 since I had to try to time it just right without hitting the rev limiter, especially from 1st to 2nd. Not a problem anymore. TRANSGO!!!! :D