coldhammer

Was talking with someone the other day about doing a tune and upgrade and they said they have a clutch-less pulley for the supercharger.

Anyone here have any experience with this. good bad etc.

m-svt-amg

Just bought one from shardul, will report once installed and tuned

I have heard it took a long time to dial in the tune, but apparently eurocharged has it figured out.

carguyshu

just search the e55 board. there are several very long threads on the subject. Unless you are monitoring your IATs its probably best to steer away from them as there is then no safety mechanism to turn off the supercharger.

MTV10

I have 80mm fixed on my E55. Car is a fkn monster....
Tune isn't perfect but I've learned to drive with it.

m-svt-amg

Who did your tune, if you dont mind me asking?

Safety mechanism to turn off the supercharger... car still has limp mode, as well as the bypass valve.

In fact, the amg motors are the only clutched pulleys im aware of. My Lightning only has the bypass valve and the tune to pull timing with high temps, and i run 20 lbs of boost on the stock block with a whipple for 20k miles.

That said, i agree! I would only consider a fixed pulley on a 55k after a pump upgrade (cwa50) and a kc or heat exchanger upgrade (dualpass he). Gonna do split cooling for good measure

I would NEVER recommend running more than stock boost on any vehicle without monitoring AFR, Fuel Pressure, Charge Temps (IAT2), and manifold pressure (Boost) at all times.

coldhammer

hmm no mention was made about IAT issues when we discussed it. Thanks for the heads up. Ill have to think about that a bit more.

m-svt-amg

Iats are an issue at stock when your water pump is going out... getting a solid water pump (010 or cwa) + split cooling should be enough to support a fixed pulley.

Since im going to 77mm, its equivalent to 180mm crank, so im also getting injectors and an ftp exchanger for safety.

Crissus

Currently selling my 77mm FSP. Anyone interested?

CerBErusM113

How much for the 77mm Crissus?

I'm running a 80mm FSP without resistor. It's smoother than a clutch and revs faster. Without the resistor the S/C isn't locked, the bypass valve stays open so you don't gather heat and you have substantial weight savings over a clutched pulley. I like it better than my 84mm clutched that I had prior. Not a bad mod for the $ IMO.

m-svt-amg

Thanks for the notes on the resistor. Was this configuration recommended by your tuner?

I am hesitant to install my clutchless pulley as many have reported EC tune isnt quite reliable.

Is there another option?

JoeNobody

Try a tune by Tony Lawsee of RaceIQ (previously of BIP in Atlanta). He has the best tuning for the fixed.

m-svt-amg

That is excellent news! Thank you. I heard he was doing tuning after leaving BIP, but i didnt not know to look for RaceIQ.

Can he use the EC tuning cable or does he have his own preference?

CerBErusM113

My EC tune has worked great from day 1 with and without the resistor. I got the tune and Clutched pulley from them so I got the retune for very cheap on my Fixed 80mm. That's why I stuck with them. No complaints, but I will agree with JoeNobody, I've read more happy customers from Tony concerning the FSP. Then again, maybe Jerry's customer's just aren't speaking up. I think you'll be happy either way you go. I have the box tune and it runs well. Probably need it dyno tuned properly but that's for another time.

m-svt-amg

Good info. I will give Jerry's tune a try and see how it goes. Its already paid for anyway

If i have issues we are unable to sort out, Tony will be my first choice.

Thanks for the helpful feedback.

Crissus

Sorry its already gone...