increased rev limiter???
Thread Starter
Senior Member
Joined: Apr 2002
Posts: 304
Likes: 0
From: san diego, ca
C230 kompressor C2 C7
increased rev limiter???
I talked to the socal rep for upsolute on friday. among other things we discussed upping the rev limiter when i have my ecu reprogramed. i am not sure of how conservative mb was when they established the current redline. I believe it is currently 6200 rpms, but it looks like 6000 on the tach. so what do you guys think? i am also going to have the speed limiter removed when the software is installed. there is no reason to do this except for bragging rights and getting in trouble.
Senior Member
Joined: Feb 2002
Posts: 271
Likes: 0
From: Dexter, Michigan, USA
2002 C230k
Are you going to make any mods that can benefit from the engine spinning faster?
Seems kinda silly to up the revs if the engine isn't going to be making power there anyway... I mean sure, maybe you can spin to 7000rpm, but if power starts to drop off at 5700, why bother? (I'm just making the numbers up by the way, I have no idea what the power/torque curves looks like)
Seems kinda silly to up the revs if the engine isn't going to be making power there anyway... I mean sure, maybe you can spin to 7000rpm, but if power starts to drop off at 5700, why bother? (I'm just making the numbers up by the way, I have no idea what the power/torque curves looks like)
MBWorld Fanatic!
Joined: Nov 2001
Posts: 1,377
Likes: 1
From: Vancouver Island, B.C. Canada
2005 smart cabrio; 2008 Mercedes-Benz B 200
rev limiter
The M111 engine has a rev limiter for a reason - its internal parts are not designed to exceed certain rpm thresholds. This is probably for good physical reasons, such as engine balance (or the lack thereof) and other fun stuff possibly including valve float/bounce. Meaning if you raise the rev limiter threshold without doing internal engine modifications to compensate, you could be creating a very expensive problem.
Aside from that, as spyke wrote, you will not benefit from spinning this engine faster, even if it could sustain it, unless you have recalibrated the engine to take advantage of a higher rev limit. In most cases this would involve head work, new cams, reprogramming the ECU, doing something about the supercharger, fitting uprated injectors (most likely) and a host of other stuff, the total bill for which would only serve to remind you that you should have bought a C32 in the first place
Aside from that, as spyke wrote, you will not benefit from spinning this engine faster, even if it could sustain it, unless you have recalibrated the engine to take advantage of a higher rev limit. In most cases this would involve head work, new cams, reprogramming the ECU, doing something about the supercharger, fitting uprated injectors (most likely) and a host of other stuff, the total bill for which would only serve to remind you that you should have bought a C32 in the first place
Super Member
Joined: Nov 2001
Posts: 503
Likes: 0
From: Jacksonville Florida
w203 c230K 2002
Re: rev limiter
Originally posted by Mike T.
Aside from that, as spyke wrote, you will not benefit from spinning this engine faster, even if it could sustain it, unless you have recalibrated the engine to take advantage of a higher rev limit. In most cases this would involve head work, new cams, reprogramming the ECU, doing something about the supercharger, fitting uprated injectors (most likely) and a host of other stuff, the total bill for which would only serve to remind you that you should have bought a C32 in the first place
Aside from that, as spyke wrote, you will not benefit from spinning this engine faster, even if it could sustain it, unless you have recalibrated the engine to take advantage of a higher rev limit. In most cases this would involve head work, new cams, reprogramming the ECU, doing something about the supercharger, fitting uprated injectors (most likely) and a host of other stuff, the total bill for which would only serve to remind you that you should have bought a C32 in the first place
Randy
MBWorld Fanatic!
Joined: Nov 2001
Posts: 2,465
Likes: 0
From: SF Bay Area
2002 C230 K
Re: rev limiter
Originally posted by Mike T.
... and other fun stuff possibly including valve float/bounce.
... and other fun stuff possibly including valve float/bounce.
BT
Trending Topics
Super Member
Joined: Dec 2001
Posts: 756
Likes: 1
From: Canada
Originally posted by sdcaclint
i am certain this would affect the warranty if the dealer found out, but they can only tell visually. and upsolute is working on a fix for that
i am certain this would affect the warranty if the dealer found out, but they can only tell visually. and upsolute is working on a fix for that
MB World Stories
The Best of Mercedes & AMG
New Electric Mercedes-AMG GT 4-Door Coupe Unveiled: 10 Things You Need to Know
Verdad Gallardo
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)
Verdad Gallardo
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Thread Starter
Senior Member
Joined: Apr 2002
Posts: 304
Likes: 0
From: san diego, ca
C230 kompressor C2 C7
i guess i should have added that i am planning on doing the pulley along with the software. i don't want to have to have the software updated later, i want to get it right the first time. i realize that mb put the rev limiter there for protection. i was just asking for some feedback on how conservative the redline was. i believe the increased size pulley is good for an additional 4 psi, or a total of 10psi. can someone confirm this. i am liking the ring pulley (until someone can confirm that a light weight weight one is as safe as the ring)
