Well this is not an fsp anymore. It's a clutched pulley, the equivalent of a 180 crank pulley. Clutched pulleys are not hard to tune for since it's like factory mechanism

 

AIO Computer Resources is the name I have seen associated with him now

 

Agreed there. However I was only interested in the FSP due to the 84mm and tune not being all that great for me. Glad to see I could get that with the 77mm

 

Did this new combo fix your lean issue?

 

Yes.
But to be honest the lean issue was just a map update away from being fixed with the FSP as well. BIP dissolved while I was waiting on it. I was running mid 13s AFR at WOT, I just needed more fuel there and I would have been set

However with this 77mm clutched pulley, I am seeing low 12s AFR with the first tune Tony sent over. I am waiting on him to add a little more fuel (I prefer to be in the 11s in this weather so I have some room when it gets cold) at WOT
Another advantage with the clutch....I am averaging 17-19mph city and freeway driving, I averaged 14-16 with the 80mm FSP

 

Maybe the perceived smoothness of the fsp is just when more time is spent on the tune to make it smooth?

Therfore the smoothness can be attained with time in the clutched?

 

^^ I believe that may be the case. I honestly did not expect the smoothness of 77mm clutched. There was a HUGE increase in smoothness and throttle response coming from the 84mm (with another vendor's map) to the 80mm with Tony's map.

There seems to be same smoothness with the 77mm clutched with Tony's map. The throttle response is not as sudden, but I am ok with it cos it certainly is improved compared to the 84mm TB with map.

 

Great feedback. Thank you.

 

Just wanna add that I put in my Fixed Pulley this afternoon. I drove it almost 100 miles too and gotta say the engine feels much smoother. Definitely is more generous with giving your right foot the power when asked. Not the animal I had heard it would be but I may be running slightly rich due to the dual meth nozzles. Regardless, haven't gotten the dreaded hiccup that everyone speaks of. Lets keep our fingers crossed but I like it so far.

 

Who tuned yours?

 

EC Box tune.

 

Pretty good news, that their canned tune now seems to work well. Does EC still require the resistor in the clutch harness?

 

Please keep us updated if this change, Thank,

 

I noticed that today the car seemed a slight bit choppy but that seems to level itself out. And I did not use the resistor. The car's making 12.4-13 psi at WOT based on the OBDII's signals via the Torque app. Still needs a little more of a tune though. Don't have a proper wideband so thinking I may be getting a dyno tune sooner or later.

 

A quick update gentleman. Got a proper tune for an 80mm running now. I spoke to EC and they said the resistor needs to be in the harness. So I plugged it in and now I see what people are talking about. It really is instant torque anytime you go near the throttle. Hard to keep it chill, it always wants to accelerate and slam you back in your seat. A slight bit obnoxious. I do find it strange though since I had loaded the tune and it seemed to drive much better without the resistor. Like a normal 55k with a much smaller pulley. My question is, am I hurting my car driving without the resistor? I see much muuuuch lower IATs and better gas mileage without it. So just curious.

 

I ran mine completely without a resistor for months, car ran best that way. Gas mileage was better, IATs were better, smoother throttle modulation even though it was more sudden than the clutched pulley.

 

I would speculate the following:

1: The ECU holds a few maps, one of which is "supercharger engaged"
2: Eurocharged only modified this map, because, let's face it, it really is the only map that needs changing.
3: The resistor forces the ECU to use the aforementioned map.

Then running without the resistor would result in a lean condition under circumstances that the car does not normally turn on the supercharger.
Probably not all that bad, because it is under light load, but not really optimal.

kponti: did you see any excessive leanness at low rpm, small tps without the resistor?

 

Thanks for the feedback gentleman. I've seen my AFRs and they seem fine under light load. But like Kponti said, the car drives much better without the resistor. Also with the resistor there's the lag after a shift at WOT. Without it, drives normal and revs so much quicker.

I am curious though, is the recirc butterfly flap open when the Supercharger is not engaged? That may be why we see such lower IATs without the resistor. Just speculating though. Feedback from the FSP gurus please.

 

I don't know about the different maps, but I do know that the car runs well not lean without the resistor. In fact, I got leaner/limp modes a lot more with the resistor than without

 

Any comments from EC regarding why the tune seems to work better without the resistor but their tune requires it ? ,,, are they still actively developing this as box tune or is it custom at this point?

 

I don't think they are actively working on it but Jerry did tune mine himself. He adjusted it for my current mods. Need to grab a true Wideband though, anyone know how to get the AFR Wideband in Torque Pro to work?

 

Any update on this? Just installed my eurocharged 77mm fsp and box tune tonight. Driving it later this week, debating is i should do the resistor or not.

 

I have 77mm fixed and I've been DD'ing for 7 months now with no resistor. Tune done by Anthony Lawshee

 

we have 74mm and 72mm now in stock

 

^might have to take you up on that 72mm here shortly once i do some more fuel upgrades