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Forced Induction Forum
Discuss supercharging, turbocharging and even nitrous and water injection here.

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Old 05-24-2014, 06:16 AM   #81
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It seems the people working on LS engines and VW racing engines are all over increasing overlap and the advantages with a supercharged engine with sequential / multipoint injection (though not turbo).

Apart from the benefits of clearing the combustion chamber, there is also believed to be a benefit as far as valve/combustion chamber/piston cooling, etc.

Issue is that exhaust readings show lean, so they are normally tuned without the exhaust sensor. There is further info that I wont go into, but a quick Google search will put you on the right track.

I am not trying to be controversial with this, I simply have a mate who has a car that seemingly runs perfect with no defects, no pinging, no detonation, etc, but put it on a dyno with the exhaust sensor, and it shows lean as hell. I have an inquisitive mind and wanted to get to the bottom of why this was so.

In my search for info, there has been a lot of posts where people have dynoed there cars with less aggressive cams and also had borderline lean AF readings, and told with no explanation that this is normal by the tuner, and that their engine is going to blow up by everyone else.

I have read other posts again where people are struggling to tune for newer, larger FI cams, and again they are struggling. I suspect these also have increased overlap, and tuning to a certain AF ratio via exhaust just isnt going to work.

The ESS TS2+ tune does seem to cater well for the 272 intake cam, but it is horrifying to see the exhaust measured AF reading.

I will get back on original topic now
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Old 05-24-2014, 06:21 AM   #82
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yes, Im the one who bought the TS2+ few months ago and came in my SC kit the 85mm from the TS2 and the 83mm in the TS2+ update


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jdjg, which motor are you running, I wonder if the differencre in pulley size is simply that your running the M52tub, and not the M54???
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Old 05-24-2014, 06:49 AM   #83
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jdjg, which motor are you running, I wonder if the differencre in pulley size is simply that your running the M52tub, and not the M54???
Im running the m54b30



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Old 10-13-2015, 10:24 PM   #84
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Anyone have an 83mm pulley they want to get rid of?
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Old 10-13-2015, 10:28 PM   #85
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I have a spare 78, 70, and 60mm
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Old 10-20-2015, 10:02 PM   #86
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Now that would quite the upgrade I don't have cams or other engine work so I need to stick to 83mm if I can find one...
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Old 10-20-2015, 10:33 PM   #87
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Now that would quite the upgrade I don't have cams or other engine work so I need to stick to 83mm if I can find one...

what pulley you have?

why dont you made your own pulley??

I made my two pulley 79 and 75 mm, cost me US $ 45.00 each one
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Old 10-21-2015, 12:22 AM   #88
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Now that would quite the upgrade I don't have cams or other engine work so I need to stick to 83mm if I can find one...

I was running a stock engine with 78mm pulley. It was fine
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Old 10-21-2015, 04:49 AM   #89
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I was running a stock engine with 78mm pulley. It was fine
I run a stock engine with a 60mm pulley, no problems so far.
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Old 10-21-2015, 06:47 PM   #90
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Don't you guys have cams and custom tunes to run those pulleys?

I've got a MS45.1 DME, so there's a limit to how much boost I can run before there are software issues of some kind, so I hear.

I've got the 85mm pulley that comes with the latest TS2 kits. I have abundant access to 93AKI so I'd like to run the 83mm pulley. AJ says I can run this without any update to my tune.

Eventually I'm thinking FI cams and a 81mm pulley will be in my future, but I've got to let the check book heal a bit from all of this year's mods

I wish I knew how to make my own, but I don't know anything about creating something out of metal... just thought if someone upgraded to a TS2+ kit and had a spare 83mm pulley laying around then maybe we could strike a deal or something...
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Old 10-21-2015, 09:57 PM   #91
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Originally Posted by rkneeshaw View Post
Don't you guys have cams and custom tunes to run those pulleys?

I've got a MS45.1 DME, so there's a limit to how much boost I can run before there are software issues of some kind, so I hear.

I've got the 85mm pulley that comes with the latest TS2 kits. I have abundant access to 93AKI so I'd like to run the 83mm pulley. AJ says I can run this without any update to my tune.

Eventually I'm thinking FI cams and a 81mm pulley will be in my future, but I've got to let the check book heal a bit from all of this year's mods

I wish I knew how to make my own, but I don't know anything about creating something out of metal... just thought if someone upgraded to a TS2+ kit and had a spare 83mm pulley laying around then maybe we could strike a deal or something...

why you think you will meed cams to put a smaller pulley?
I have right now 79mm pulley (use my 83mm and converted to a 79mm) with stock TS2+ tune (also I have SC cams) and no problems, also in my country (Panama City, CENTRAL AMERICA) I only
can get 93RON (the tune from ESS are for 98RON)
when I put the 75mm, I use two bottles of
torco and no problem, and definitely felt the difference......
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Old 10-21-2015, 10:03 PM   #92
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I'm sure I would need an updated tune at a minimum.

Regardless, I don't know how to make my own pullies...
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Old 10-21-2015, 10:16 PM   #93
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Guys, can't someone cough up a source on where smaller pulleys for the TS2 can be bought new or a source on who can custom make them ?


Quote:
Originally Posted by rkneeshaw View Post
I'm sure I would need an updated tune at a minimum.

Regardless, I don't know how to make my own pullies...
If all fails, I know of a U.S. based Race / Supercharger shop that can build almost anything on their 5 Axis CNC machines, any size pulleys would be No Problem as long as you sent them your current pulley as a reference. You'd need to call them to find out pricing.




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Nitrous is a little trickier than boost, but it's not the spray that kills motors, it's STUPIDITY!!
I Know How To Fix The Rear "Bouncing" Problem On Your Cheap Coilovers Like: Jom RL FK SE & RK.
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Old 10-21-2015, 11:03 PM   #94
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ESS TS Pulley Upgrades

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Guys, can't someone cough up a source on where smaller pulleys for the TS2 can be bought new or a source on who can custom make them ?





Rob43

I, 75mm and TS2+ tune

Last edited by jdjg; 10-21-2015 at 11:03 PM.
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Old 10-21-2015, 11:08 PM   #95
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I, 75mm and TS2+ tune
The question is,......Where did you buy your smaller ESS 75mm pulley ??

Who is your ESS Pulley source ???




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Nitrous is a little trickier than boost, but it's not the spray that kills motors, it's STUPIDITY!!
I Know How To Fix The Rear "Bouncing" Problem On Your Cheap Coilovers Like: Jom RL FK SE & RK.
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Old 10-22-2015, 12:37 AM   #96
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The question is,......Where did you buy your smaller ESS 75mm pulley ??

Who is your ESS Pulley source ???




Rob43
I bought my 60mm Pulley from ESS.
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Old 10-22-2015, 12:41 AM   #97
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I'm sure I would need an updated tune at a minimum.

Regardless, I don't know how to make my own pullies...
Yes, if you decreased your pulley size significantly you would want to re-tune.

If you take your current pulley to a CNC Machine Shop, they would be able to replicate a pulley for you smaller or bigger.
Call a few machine shops to see if they would do it for you.

All the best rkneeshaw.
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Old 10-22-2015, 01:26 AM   #98
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I manufactured all my "custom" sized pulleys myself on a manual lathe, and also davcons 78mm. Any machine shop could either make, or turn down the original (cheaper option).

I did send data logs to Asbjorn of ESS when running the 78mm pulley with my stock (apart from stage 3 head, and 3 inch exhaust) TS2+ setup, and the tune had adapted fine, but was advised at that time not to go further on the ESS supplied 30lb injectors.
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Old 10-22-2015, 01:38 AM   #99
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The TS2+ cams do have a little more overlap, the vanos isn't adjusted between the TS2 or TS2+ files, I don't think I would personally go as low as 78 with stock cams, but I would PERSONALLY try an 80mm and see how it logs on stock TS2
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Old 10-22-2015, 01:45 AM   #100
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Two on the go, such a shame I had to start with this :
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