RAWE55

How many of us successfully running a fixed supercharger pulley? If so what size and list your other modifications and tuning company

Also how have you installed the resistor to prevent shorting itself out? Mine was and the car was stalling when pulling away from a light until I soldered some pins onto each prong, other options include relocating the resistor into the cabin like Denroll has.

Worth the wait

I get the benefits and improved engagement, just not comfortable removing AMG's biggest safeguard to engine failure.

lm7

77mm, eurocharged tune now for close to 6 months. Still doesn't like cold starts but figured out a way around that. Runs hard otherwise no hiccup or codes. Resistor is in engine bay. If I were to do it over again I'd definitely do a crank pulley and smaller clutched sc pulley.

viren.89

+1

Denroll

I've been running mine for many moons now. Mods list? All of them, I guess.

I would say it's like dating Kim Kardashian (in her prime, Pre-Kanye): not perfect and sometimes annoying, but dat ***!

RAWE55

Yeh i have the same issue, just have to key in position 2, or lights illuminated on the dash for 5-10 seconds to solve my cold start problems. Its a great mod nontheless. Is a bit of a pain in the a** to daily drive with but just feels so great when you get on it, incredible. Im also contemplating taking one step back from the fixed design and going the route of smaller clutched pulley and 172 mm crank pulley. Just havent made up my mind as yet.

Manuyc

I followed your method and put the resistor inside the cabin right behind the passenger carpet. Plus I went with 1000ohm resistor from radio shack. No more hiccups or car going into limp when I press down hard on the pedal.

Ohh and I have the 77mm clutch-less pulley with a Dyno tune by jerry.
Only weird thing is my car A/F ratio is stuck at 10

Denroll

"Stuck" at 10? Is that at WOT or all the time? Might need a new sensor. Less than $50 if you get the generic Bosch number on amazon.

RAWE55

I think we may be able to debunk the resistor as causing the majority of the issues everyone has been experiencing. When mine wasnt in properly, ie shorting itself out, my STFT's went to over -25% on both banks. Car would buck and stalled twice. Took pulley off for a while, thought about the equation like a mad scientist and retried the resistor with some soldered pins and car was back to being a whole new animal.
Going to try something above 560OHMs

Manuyc

Jerry and Aussie55 both tried to figure it out Dyno tuning my car at ragetek.
To why my car running 10's on the A/F's WOT.
They did a great job and gave me 6 runs while retuning to get it to normal to get more increase HP. but no dice. you say I need a sensor? What kind of sensor and where does it go?

Manuyc

I ran the resistor to inside the cabin like denroll did and never had a problem again. The car is a beast
I used quality heat resistant wire with quality crimps and snaked it inside the cabin

Manuyc

I kept the resistors pins straight I did not bend them at all either

RAWE55

you think a wire wound resistor like this would do the trick?

http://www.ebay.com.au/itm/5-5W-600-...6dc7c8c&_uhb=1

trev0006

Now that is hilarious.

Manuyc

looks similar to the one i have

RAWE55

I was also told by a buddy of mine (who makes circuit boards) that the wires will add to the total resistance output, the amount is negligable and also depends on the thickness of the wire but could be between 50-70ohms for over a meter of wire.

ghlainez

I've been running 77mm clutchless and Jerry's tune for about 3 weeks love the throttle responce, but had some issues. First my map sensor went out replaced that everything ok. Now I have the issue when I get on it it goes into limp mode till I pull off the road shut the car down and start it back up everything ok again. now I'm affraid to get on it and going into limp mode again. any suggestions?

Denroll

That's why I went with a varistor (potentiometer) in the cabin. I wanted to see if a change in resistance would affect anything and it apparently did not. It looks like the range of acceptable resistance is pretty large. I went to the extreme ends of my ranges and it didn't make a difference. all I know is that without a resistor (open), it runs like crap and with the original plug left in, it runs like crap.

ghlainez

Denroll where exactly did you install the resistor in the cabin? What size resistor?

jesterEOD

Can someone elaborate on where the resistor was placed?

Denroll

It is to the left of the supercharger pulley. There is a plug there that goes into the supercharger. Unplug it, then put the resistor into the female end (the part that goes away from the s/c).

Denroll

It would go in right here: