What does this button do?
Thread Starter
Former Vendor of MBWorld
Joined: Jan 2007
Posts: 3,193
Likes: 3
From: Glendale Arizona
C55,SL55,C63
What does this button do?
I'm case you are wondering.. What does that button does? It is my new Supercharger bypass switch. It allows the supercharger to only be engaged under a set throttle position. So.. I can now drive at 65-70mph on the highway and not have to use my supercharger. it also eliminates supercharger back lash from the throttle body closing and the car still wanting to boost when i take my foot off the gas. This also help in conjunction or with my supercharger bypass valves too.
This button also allows me to have a "valet mode" of sorts. With the switch in the down position (as seen in the pic) the supercharger will never come on. The car makes a whopping 240whp with the blower off lol! It makes for a nice "screw you" to the parking attendants that are known for beating on cars.
A side effect of having this mod is my gas mileage as gone up ten fold. I only
Just add this to the list of strange mods i do.
Thread Starter
Former Vendor of MBWorld
Joined: Jan 2007
Posts: 3,193
Likes: 3
From: Glendale Arizona
C55,SL55,C63
Not Nitrous for me. However we did use an NX relay to make it happen. It was actually quite easy to do as long as you toss out the lame directions that come with the kit.
You dont have to keep the SC off, but you do have that option. As long as the redlight is on you got SC power... It just now takes a slight and i mean very slight amount of foot pressure to engage the blower. Its perfect for 65mph or 75mph cruzin and not using a ton of gas.
with the way I race at the track (using a preload on the gas and brake) It will never effect me. Not to mention as soon as you would mash the gas the blower is boosting.
You dont have to keep the SC off, but you do have that option. As long as the redlight is on you got SC power... It just now takes a slight and i mean very slight amount of foot pressure to engage the blower. Its perfect for 65mph or 75mph cruzin and not using a ton of gas.
with the way I race at the track (using a preload on the gas and brake) It will never effect me. Not to mention as soon as you would mash the gas the blower is boosting.
Trending Topics
MBworld Guru
Joined: Apr 2002
Posts: 22,058
Likes: 18
From: Diamond Bar, CA
W206 PHEV AMG
now that's impressive. lol
so back to the button...when it's on the "off" side the s/c will never engage? or it will engage under certain load? OR are you saying when the button is on "on" the s/c will engage under certain input? I was under the assumption that doing the amg s/c aftermarket you have the s/c clutch engaged all the time?
just want to make sure i read it right. lol
so back to the button...when it's on the "off" side the s/c will never engage? or it will engage under certain load? OR are you saying when the button is on "on" the s/c will engage under certain input? I was under the assumption that doing the amg s/c aftermarket you have the s/c clutch engaged all the time?
just want to make sure i read it right. lol
Last edited by FrankW; Aug 19, 2009 at 12:04 AM.
MB World Stories
The Best of Mercedes & AMG
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
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
MBWorld Fanatic!
Joined: Oct 2006
Posts: 4,856
Likes: 4
02 C32 AMG
now that's impressive. lol
so back to the button...when it's on the "off" side the s/c will never engage? or it will engage under certain load? OR are you saying when the button is on "on" the s/c will engage under certain input? I was under the assumption that doing the amg s/c aftermarket you have the s/c clutch engaged all the time?
just want to make sure i read it right. lol
so back to the button...when it's on the "off" side the s/c will never engage? or it will engage under certain load? OR are you saying when the button is on "on" the s/c will engage under certain input? I was under the assumption that doing the amg s/c aftermarket you have the s/c clutch engaged all the time?
just want to make sure i read it right. lol
mike tells me he can he even switch it on while in the middle of driving, whether while sitting at a light or while driving on the highway.
this is my next mod without a doubt, as, mike might spill out, it has some very nice cooling benefits as well
MBworld Guru
Joined: Apr 2002
Posts: 22,058
Likes: 18
From: Diamond Bar, CA
W206 PHEV AMG
when the button is in the OFF position, its off. period. regardless of load. when it is ON, the s/c will engage under a certain load.
mike tells me he can he even switch it on while in the middle of driving, whether while sitting at a light or while driving on the highway.
this is my next mod without a doubt, as, mike might spill out, it has some very nice cooling benefits as well
mike tells me he can he even switch it on while in the middle of driving, whether while sitting at a light or while driving on the highway.
this is my next mod without a doubt, as, mike might spill out, it has some very nice cooling benefits as well
let us know how that goes, but i'm not sure our V6 will make adequate power. you know how the i/c pump fail feels like. lol but if that can improve mpg to 28 on hwy, maybe it would be worth it.
MBWorld Fanatic!
Joined: Oct 2006
Posts: 4,856
Likes: 4
02 C32 AMG
cool. did a independent controller was needed since the charger is aftermarket? or did the C55 ECU was able to be programed to take the s/c into effect so that it tells it to engage?
let us know how that goes, but i'm not sure our V6 will make adequate power. you know how the i/c pump fail feels like. lol but if that can improve mpg to 28 on hwy, maybe it would be worth it.
let us know how that goes, but i'm not sure our V6 will make adequate power. you know how the i/c pump fail feels like. lol but if that can improve mpg to 28 on hwy, maybe it would be worth it.
as far as feeling slow, yah no doubt it will be slow, but it would probably be sufficient for "normal" everyday driving, whatever THAT is.
when i do this, i'm not planning on doing it for all drives. just like, once i get up to speed on the highway going 75-80, turning off the s/c. and if mike jumps from 5 to 26, i bet we can see 30. i already see 23 or so going 70-75.
also, can be used in the staging lanes at the dragstrip. shut off the s/c, cools everything down a lot more (so i was told), almost to ambient apparently, and then flip the switch back on. instant power. apparently, you could even flip it on under WOT if you really wanted to, though i wouldnt do that lol.
Thread Starter
Former Vendor of MBWorld
Joined: Jan 2007
Posts: 3,193
Likes: 3
From: Glendale Arizona
C55,SL55,C63
Its my understanding that under normal driving and low load on the engine the A/F is kinda lean on most cars. When you lay into the throttle thats when things start happening to the A/F.
On the last SC setup. My SC was on all the time and boosting. I installed some bypass/BOV's to the SC to reduce back lash when the throttle body is closed. So now as soon as I let off the gas the SC shuts off.
I used a Nitrous relay WOT switch and tricked it to think WOT was at like, say.... 10% load.
When we first installed it, the blower only came on under 100% load. I said "Thats not going to work for me" So some minor wiring adjustments were made to solve the problem.
Also my IC pump stays on regardless of the blower being on or off. When the car is not boosting, the air really gets a cooling. Then when I hammer on the gas it rams all that cooler un-boosted air down into the engine. Making for a some slightly lower IAT's under Compression. So the first surge of the SC seems stronger. Its almost like my blower isn't on long enough to make any extreme heat.
On the last SC setup. My SC was on all the time and boosting. I installed some bypass/BOV's to the SC to reduce back lash when the throttle body is closed. So now as soon as I let off the gas the SC shuts off.
I used a Nitrous relay WOT switch and tricked it to think WOT was at like, say.... 10% load.
When we first installed it, the blower only came on under 100% load. I said "Thats not going to work for me" So some minor wiring adjustments were made to solve the problem.
Also my IC pump stays on regardless of the blower being on or off. When the car is not boosting, the air really gets a cooling. Then when I hammer on the gas it rams all that cooler un-boosted air down into the engine. Making for a some slightly lower IAT's under Compression. So the first surge of the SC seems stronger. Its almost like my blower isn't on long enough to make any extreme heat.
MBWorld Fanatic!
Joined: Oct 2006
Posts: 4,856
Likes: 4
02 C32 AMG
MBWorld Fanatic!
Joined: Nov 2001
Posts: 1,289
Likes: 3
From: OC
C32
I do not think on the C32 you will see much if any improvement in MPG. The clutch is off below 2800-3000rpm at light loads anyway. I see no difference in gas mileage between 2700rpm and 3000rpm on the freeway and turning off the clutch when it is already off does nothing.
You can always unplug the clutch and take it for a drive to test it. When I did this the car was slow. It is hard to move air through the screws of the blower at the higher rpm's when they are not turning.
You can always unplug the clutch and take it for a drive to test it. When I did this the car was slow. It is hard to move air through the screws of the blower at the higher rpm's when they are not turning.
MBWorld Fanatic!
Joined: Oct 2006
Posts: 4,856
Likes: 4
02 C32 AMG
I do not think on the C32 you will see much if any improvement in MPG. The clutch is off below 2800-3000rpm at light loads anyway. I see no difference in gas mileage between 2700rpm and 3000rpm on the freeway and turning off the clutch when it is already off does nothing.
You can always unplug the clutch and take it for a drive to test it. When I did this the car was slow. It is hard to move air through the screws of the blower at the higher rpm's when they are not turning.
You can always unplug the clutch and take it for a drive to test it. When I did this the car was slow. It is hard to move air through the screws of the blower at the higher rpm's when they are not turning.
i personally would probably only use this for MPG purposes on the highway. i'm in it for the cooling
Thread Starter
Former Vendor of MBWorld
Joined: Jan 2007
Posts: 3,193
Likes: 3
From: Glendale Arizona
C55,SL55,C63
Before the install for finished we thought about that. I dont want it to effect my race times and have some sort of delay at the track. This week I'm going to be doing some launch testing to see if I am getting any unwanted delay. As far as i can feel now there is no delay.
