Does anyone have an ASP pulley installed?

If so - did you get an ECU Tune and from whom?

Thanks.

 

I would also be curious to know this...

 

Yes. I have the ASP Pulleys installed. They are worth every penny.

No. I have not gotten the ECU tuned. I have several other mods I want to do prior to the ECU.

 

Thanks for the reply!

Do the pulleys look stock? The picture appear so.

And did you install them yourself?

 

There's another company making pulleys now, it's called Leading Edge. I was reading about it over on the MB boards, but I haven't been able to find the vendor or a web site for them. Anyone else hear about the LE pulley?

 

The ASP Pulley's are based on the stock crank pulley. The weld on a larger outer ring. The pulley's look completely stock when installed.

No, I did not install them myself. I had a shop do it.

 

From your description, I take it you noticed a good power increase, even without an ECU upgrade? I was under the impression that you needed an ECU upgrade in order to do the Pulley upgrade. As sophisticated as the Car is, I'm surprised it would "let" it work properly with just a pulley upgrade. I would assume that the MAP sensor would see the extra boost and pull back on everything. Am I wrong?

 

The power increase is noticeable with the Pulley upgrade and the ECU upgrade is not necessary. While the ECU is not required you will see healthy gains from the addition of ECU programming. I am trying to finalize additional mods to the car that will require a custom tuned ECU so I am holding off till everything is lined up and in place. I am hoping to have everything finalizes in the next couple of months. It is a slow process as there are very few out of the box solutions.

The ECU is very sophisticated and it handles the added boost without issue. The ECU is not concerned with the level of boost. It is concerned to measure Intake Air Temp, ping/knock, etc. From an engineering perspective I can not think of a reason to limit the boost. The sensors are in place to protect the engine. The engine can support all the boost that the SC can generate - you will "redline" the SC prior to generating too much boost for the engine.

Additionally you have to take into account things like air density and how it would appear to the ECU. For example I could be 9,000 ft above sea level in 100 degree weather one day. Then the next day maybe I am 100 ft below sea level and it is 37 degrees outside. Want to talk about a huge difference in power the car will put down at the wheels. You will go from a situation where you will have trouble spinning the tires off the line to a situation where you spin at the 1-2 upshift.

 

At first I thought you were referring to a Supercharger Pulley.

Then I thought you were referring to underdrive pulleys.

Not it appears that you are actually referring to the supercharger pulley.

Upon looking at their site, all I see is underdrive pulleys. Does anyone have a link/pics of the actual blower pulley?

Any idea how much boost it is adding?

Thanks,
Shawn

 

Here is the link. Their website is still under construction so the links aren't hooked up yet. It looks really promising though.

 

It is actually the crank pulley and a water pump pulley in the kit. I believe the price is $1,100. It adds another 5 lbs of boost for a rough total of 19.5 lbs.

 

Ahh...I see, they change the other pulleys to speed up the Supercharger. Gotcha!

I'm not 100% sure, but I believe on american cars like the '03+ Cobra and the Lightning, don't they change the actual supercharger pulley itself?

By the way, Leading Edge looks a LOT like the logo for Edge Performance Products (who make a lot of Diesel chips/programmers/etc).

SQ

 

Increasing the crank pulley makes all other pulleys spin faster (overdrive) thus the supercharger spins faster and creates more boost at all engine RPM's. The other pulleys are reduced in size (underdrive) to make the belt fit. Envision your ten speed bike were the pedal is the crank pulley.

If you look at the stock crank pulley on your SRT you will see there is no room to increase the pulley size without reducing the neighboring pulley.

Reducing the other pulleys just allows the serpentine belt to fit. That's what I like about the ASP pulley, it looks (it is) stock and retains the stock belt so there is less possibilities of issues if and when I need to go in for warranty work.

The simple solution would be to reduce the SC pulley, but with the electric clutch it must be difficult or really expensive.

 

DAMN! $1,100 for Just the pulleys? I just can't justify in my head why a couple of metal pucks cost that much. It makes no sense. The R&D couldn't have taken that long, and the material cost can't be much...

Seems to me, they would sell a lot more of them if the price were more reasonable...

Hell that type of setup on a cobra with the SC and acc pulleys is less than half of that...

I understand that the HP per Dollar ratio is good, but still...

 

Matt,

Thanks for the link to Leading Edge. I looked but I must not of searched deep enough through the listings. That $1100 sure does look a lot better than the 2k that the others want.


I'm waiting for someone to try a water/meth setup on one of these SRT-6's. I looked into them a few months back and got very close to ordering a system, but then I had a few other $$ issues to take care of first. I wonder why no one on the MB site has done a Water/Meth set up.

I was really hoping that the long tube header project that company in TX was talking about would work out for us. Myself, I think the headers should be the first step in mods. I also agree that the ECU should be about the last thing to be done.

John

 

I agree. I am guessing that it is the same company though. It seems like they are branching out to other markets other than diesels. I can't wait to see their tuning options.

 

Price quote I got from ASP was $975 shipped. The kit includes 3 pulleys and the Crank pulley is dampened.

Similar kit from EVO Sport is $1,999 and I think you still need to purchase another belt. They have a non-dampened crank pulley kit for $1,499.
For an added $900, EVO will re-program your ECU but you must remove, ship and replace your ECU module.

Only one kit from Renntech and it is all inclusive for $3,300 and they had a local shop that would program my ECU. For $350 the shop would also do the pulley install.

 

Well $975 isn't as hateful when you consider the cost of other "kits" out there. I'm sure I can do the install myself. Does anyone have a estimate of the HP increase?

 

Maybe NeedsWings can come up with some pulleys for us (and cheaper).

 

Edge makes great products for diesels (I've used them on my Cummins with good success).

Hopefully they will get into the ECU of the crossfire.

SQ