rev limiter
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TECH Apprentice
Joined: Sep 2005
Posts: 360
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From: Bay Area, CA
rev limiter i have a 2002 camaro ss a4 with 16000 miles on it slp load mouth i just purchased a hypertech on ebay for $100. my question is what should i set my rev at and shift points i set it at 6500 rev limiter and to shift at about 6300-6400 rpm is that good or to high for a stock car?
If you havent done any valvetrain mods(springs,retainers,pushrods) then dont change the rev limiter.
you will get valve float... and you will bend valves and pushrods....not a good thing.
you will get valve float... and you will bend valves and pushrods....not a good thing.
Originally Posted by bowtieman81
You won't really gain any power by raising the rev limiter. Seems like most A4 guys do best with shifting at 5900-6000 with rev limiter set at 6200 (stock)
if you wanna read more about it, click on my sig
At the track this weekend a few stock internal guys short shifted their cars and picked up MPH and ET. The stock cams falls off HARD after 5.5K and its not worth revving the stock PR and springs that high. 6k is the furthest i would go...
Originally Posted by RedHardSupra
wrong! proof:
if you wanna read more about it, click on my sig
if you wanna read more about it, click on my sig
Good argument Redhard, it looks like I stand corrected
.I was mainly going off one of my friends A4 cars. I have an M6, so no personal experience. Your method and analysis looks pretty good.
Have you had any issues reving high with stock valvetrain?
M6 is VERY nicely matched to stockish power curves. A4 is spaced out WAY too wide.
once you get into peaky powerbands (big cams), then you can start benefitting from 4.33+ gears.
i don't have a stock valvetrain, so i don't know about reliability. i do know however that valvesprings are only a part of the problem, there's more to it than that, it has to do with weight.
once you get into peaky powerbands (big cams), then you can start benefitting from 4.33+ gears.
i don't have a stock valvetrain, so i don't know about reliability. i do know however that valvesprings are only a part of the problem, there's more to it than that, it has to do with weight.
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again..I think he'sn stock internals at this point...unless eh chimes in and says differently...
teh issue isnt going to be if he gains any power from shifting higher...
IF he finds optimum shift points and his valvetrain can handle it..then yse..posiibly shifting higher will net him a better ET. doesnt mean he's going to gain any power...just means he might get the best use of his power
the stock drivetrain really will not handle repeated 6200+ shifts..
make it lighter..make it stronger...and the botom end is your limiting factor
there are guys spinning up to 7200 on the stock bottom end(might want to change out the Rod bolts to some better ones..)
teh issue isnt going to be if he gains any power from shifting higher...
IF he finds optimum shift points and his valvetrain can handle it..then yse..posiibly shifting higher will net him a better ET. doesnt mean he's going to gain any power...just means he might get the best use of his power
the stock drivetrain really will not handle repeated 6200+ shifts..
make it lighter..make it stronger...and the botom end is your limiting factor
there are guys spinning up to 7200 on the stock bottom end(might want to change out the Rod bolts to some better ones..)