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Discussion Starter #1 (Edited)
Hi guy's! We here at South Florida Pulley HQ want to introduce ourselves to you. We are the very first company to come out with smaller Supercharger Pulleys for all of the Eaton Superchargers in this country and abroad. We have been successfully making supercharger pulleys for the past 7 years , as well as running our Online Store.

We are also the very First Supercharger Pulley company to not only "Invent, but Manufacture" the World's First Interchangeable/Modular Supercharger Pulley Unit 6 years ago for all GM/Ford applications. It is Called the Dial_Ur_Boost Interchangeable Supercharger Pulley Unit!



The new Chevy Cobalt SS as well as the new Saturn Ion Redline can use our DUB (Dial_Ur_Boost) Interchangeable Supercharger Pulley Units, to give you the added boost and horsepower, the average performance enthusiast is looking for in the increased "Boost" area.

Of course when running higher levels of boost, certain things need to be taken into careful consideration and that is running a good Octane Fuel, such as Sunoco/Amoco/Mobil 93 octane.

We recommend starting off with our DUB 3.25" Pulley Unit, which will net you an additional 2 lbs. boost over the factory and regapping your Sparkplugs down .005.

Also, any pulley size smaller than our 3.25" , we highly suggest changing to One range colder sparkplug and regapping those new sparkplugs down at least .005 , to help lower the cylinder temperatures, associated with running higher boost levels over 2 more lbs. at wide open throttle.

Also with running a pulley smaller than a 3.25", we recommend PCM reprogramming, as well as using One range colder sparkplugs. Hope this helps, as we are in the midst of updating our website for the Saturn Ion Redline/Chevy Cobalt SS sections for our DUB Pulley Units.

You can check out these DUB Pulley Units at this link provided.

http://www.southfloridapulleyhq.com/SFPH/rl_csss/ps_dub_system.htm
 

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Not at all trying to be a dick, but upon what are you basing your claims that a 3.25" pulley will generate 2lbs more boost?

I had been under the impression that the stock pulley was 84mm/3.3" (not 3.8" like the L67/L32). A 3.25" pulley is less than 2% smaller - doesn't seem like this would make much of a difference at all, let alone 2lbs.

Or does our motor use a 3.4+" stock pulley?
 

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Discussion Starter #3
DanM said:
Or does our motor use a 3.4+" stock pulley?
Dan, your supercharger is using a stock 3.5" pulley, as by going to our 3.25" , you will be producing 2 lbs. more boost, which is fully dependant upon the Altitude Factors in your area, it could be 1/2 lb. difference either way + or -.Hope this helps.
 

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If I bought one of these pulleys smaller than 3.25 what kind of computer tunning would be involved? Also what kind of boost/ HP gains could be expected with going smaller. What would be the max PSI the motor could handle before major mods had to be done? Thanks in advance. :) Just on a curious sidenote-----would this help give the car more "WHINE" when in the throttle, because now you can barely hear it.
 

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Discussion Starter #7
Ronnie Pendergrass said:
If I bought one of these pulleys smaller than 3.25 what kind of computer tunning would be involved? Also what kind of boost/ HP gains could be expected with going smaller. What would be the max PSI the motor could handle before major mods had to be done? Thanks in advance. :) Just on a curious sidenote-----would this help give the car more "WHINE" when in the throttle, because now you can barely hear it.
Ronnie, with any Supercharged Engine, when producing more than factory recommended boost levels, you must first check your Air/Fuel Ratio Numbers, to see if they are within specifications (meaning between 11.8 to 12.0) for Optimal Performance at wide open throttle.

Several things needed to be addressed with increasing these boost levels, such as replacing the Factory Intake System with a more efficient Cold Air system, as the supercharger is demanding more air flow to maximize the power gains you are looking for.

Also, it is always best to remove the sparkplugs and regap them and close the gap by minimum of .005 to help reduce cylinder tempatures for Optimal Performance, when increasing the boost 2 lbs. over stock 3.5" pulley, with the addition of our 3.25" DUB Pulley Unit.

Any supercharger pulley producing more than 2 lbs. boost will need a sparkplug change, to One range Colder and gap them .005 close gap , over factory, to optimal performance , plus the need to Reprogram the PCM for optimal performance (meaning Air/Fuel Ratio-Timing etc.

Also , with running higher boost levels over stock configuration, you should pay particular attention to the restrictive OEM Cat Back Exhaust system on your car and go with a less restrictive exhaust, as the supercharger is making more power and needs a more efficient exhaust for these back pressures to escape through.

Hope this helps, as always remember this! The more boost the engine is producing , the more efficent Air Intake System is needed, plus an Upgraded Cat Back Exhaust for this conbination to work properly.
 

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Yeah but what about the lil "vaccum tube thing" that the RL owners say they can unplug and get 2 more psi. If you dont unplug that even with a new pulley wouldnt it still limit you to stock psi??!?!
 

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Any supercharger pulley producing more than 2 lbs. boost will need a sparkplug change, to One range Colder and gap them .005 close gap , over factory, to optimal performance , plus the need to Reprogram the PCM for optimal performance (meaning Air/Fuel Ratio-Timing etc.

The particular part about reprogram the PCM is what i am interested about. I.E. What if I bought the smallest pulley you had for my car. What would have to be done to the PCM program (something like a Hypertech, or does it need to be professionally done on a dyno). Will my cars stock componets (pistons, rods, blower, etc..) be able to handle this much more PSI. You forgot to answer my question about whether or not one of your pulleys will make my blower "WHINE" more. I am new to aspirated engines, all i have delt with are LT1 and LS1. I have a 2001 Camaro SS (417rwhp 404rwtq) Me and my fiance just bought a Cobalt SS and we both have the mod bug!!! Thanks for all of your help and being patient with me! :confused:
 

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Discussion Starter #11 (Edited)
Ronnie Pendergrass said:
Any supercharger pulley producing more than 2 lbs. boost will need a sparkplug change, to One range Colder and gap them .005 close gap , over factory, to optimal performance , plus the need to Reprogram the PCM for optimal performance (meaning Air/Fuel Ratio-Timing etc.

The particular part about reprogram the PCM is what i am interested about. I.E. What if I bought the smallest pulley you had for my car. What would have to be done to the PCM program (something like a Hypertech, or does it need to be professionally done on a dyno). Will my cars stock componets (pistons, rods, blower, etc..) be able to handle this much more PSI. You forgot to answer my question about whether or not one of your pulleys will make my blower "WHINE" more. I am new to aspirated engines, all i have delt with are LT1 and LS1. I have a 2001 Camaro SS (417rwhp 404rwtq) Me and my fiance just bought a Cobalt SS and we both have the mod bug!!! Thanks for all of your help and being patient with me! :confused:
Ronnie, regardless to how small a pulley you use, you will experience more whine coming out of the supercharger, especially if you have a good cold air system installed on the vehicle.

The PCM Tuning is very important on any vehicle, regardless to what make and model it is, as when you make more than 2 to 3 lbs. over the stock configuration, you will have to have a professional tune, to give you Optimal fuel management and timing properties. Hope this helps, as there is no Magic in installing any supercharger puley, without first finding out what your Air/Fuel Ratio's are and having a proper tune.

Most Handheld Programmers do not have the capabilites of adjusting fuel or timing, when you are running more than 2 to 3 lbs. boost. That being said then, we highly recommend a good safe dyno tune, when running over 3 lbs. boost added to the equation.
 

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But what about the boost bypass valve (thingy). It limits the boost to 12lbs regardless of the size of the pulley. Going to a smaller pulley will only get you to the 12lbs sooner, not give you any more. Unless you are offering some sort of computer upgrade, your smaller pulley WILL NOT give us more boost. It will merely get us to max boost sooner. And plugging the bypass hose IS NOT the answer, as that is merely the easy way out and could possibly damage the engine. I would like to hear your solution to this.
 

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Discussion Starter #13
XeroState said:
But what about the boost bypass valve (thingy). It limits the boost to 12lbs regardless of the size of the pulley. Going to a smaller pulley will only get you to the 12lbs sooner, not give you any more. Unless you are offering some sort of computer upgrade, your smaller pulley WILL NOT give us more boost. It will merely get us to max boost sooner. And plugging the bypass hose IS NOT the answer, as that is merely the easy way out and could possibly damage the engine. I would like to hear your solution to this.
XeroState, I certainly do not know what you mean in stating your car will not produce more boost with a smaller supercharger pulley, as that statment is not true. We have at present 5 Ion's in Texas running these pulleys and certainly producing 14 lbs. boost at wide open throttle.

It would be good for you to tell us where you got this information? Hope this helps, as a good Tuner can eliminate any higher boost problems that could occur on any supercharged engine! It would be interesting for those who have tried to build more boost, with installing a smaller supercharger pulley, to come forth and explain to us that they have tried it and failed!!
 

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Yeah but people w/ STOCK pulleys on Redline's are pluggin that bypass valve and pushin 14PSI WITHOUT a pulley change! Check the Redlineforums! Id rather pay oh ummm FREE!
Thats what we were askin about.
 

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CoBIZZLE said:
Yeah but people w/ STOCK pulleys on Redline's are pluggin that bypass valve and pushin 14PSI WITHOUT a pulley change! Check the Redlineforums! Id rather pay oh ummm FREE!
Thats what we were askin about.
Exactly. Now this isn't the safest way to gain boost, but it works. And for you SFPH, if you really knew our engines, you would know about the boost bypass valve. Now how does your pulley give us more boost, when the valve DOESN'T allow for any more than 12 as it bleeds out any extra (as our STOCK SC produces 14.5psi above 4500rpms...redline owners have seen this). Please, I'd like to hear your solution...and it better not be "plug it" as that gives us the 2 lbs that your smaller pulley gives us.
 

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As am I. This seems to be a sort of "quick fix" that doesn't solve anything we can't do for free. And the fact that here on this forum, and on the redline forum, they ignore the question of the boost bypass valve makes me wonder if it works at all. They clam they have 4 redlines in texas with them, but who is to say that they haven't plugged the bypass and gained nothing from the pulley. Guess only time will tell.
 

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Here is the link to one of our (redline owners...yes I am a redline owner) discussion about it. There are many there, I am really to lazy to find them all, just search for "Boost Bypass".
 

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XeroState said:
Here is the link to one of our (redline owners...yes I am a redline owner) discussion about it. There are many there, I am really to lazy to find them all, just search for "Boost Bypass".
Thanks for the link. And here is some said that was very interesting to me.
[UncleSmitty]
I did dyno the car with and without the bypass mod. Without, I got 216.8HP & 211.4HP. Immediately after the 2nd run I did the mod and got 212.3HP.
 
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