On 4/19/2017 at 00:57, thomasaspin said:

see everyone seems to be putting me down for coming up with this idea but no one has actually tried it themselves and thats what bugs me your putting down my idea like I'm some sort of idiot but when say a mini cooper S wants more power they reduce the pulley size when a rs4 wants more power it reduces the pulley size just because ours is used lower down the power band doesn't mean a reduction in pulley size wont see some gains wheres the hard evidence against this working? 

 

I didn't see anyone putting you down for the sake of it, instead they offered to share their knowledge and experience on a matter they have looked in already years ago in an attempt to explain why it is not worth going down that way. It's 2017, these engines have not exactly just come out and you can be sure there has been a lot of study from tuners in whether any benefit can be made by modding the supercharger. There must be good reason why the only mod deemed worthwhile is complete supercharger disengagement in really powerful BT setups (400+) as far as I know. The SC is used with different intention in the Cooper S and RS4 than it is in the Fabia's SC + Turbo setup so you can't just carry over those approaches. Again, think why no other twincharger owner before you insisted on modding the SC despite the fact some of them were in search of absolutely every last bhp they could squeeze out from the engine for pure competition purpose... Of-course you are absolutely free to ignore them and embark on a modding saga, just make sure to stick around and give us updates if you do, it will be an interesting read nonetheless.

Edited 21 April, 20179 yr by newbie69

try overtaking uphill on dual carriageway from say 2 lane roundabout. manual mode 2nd 3rd gear, you definitely feel supercharger effect. Its awesome. Once I hit 70 funs over let the audis past then

Edited 21 April, 20179 yr by Kobayashi
edit

15 minutes ago, newbie69 said:

 

I didn't see anyone putting you down for the sake of it, instead they offered to share their knowledge and experience on a matter they have looked in already years ago in an attempt to explain why it is not worth going down that way. It's 2017, these engines have not exactly just come out and you can be sure there has been a lot of study from tuners in whether any benefit can be made by modding the supercharger. There must be good reason why the only mod deemed worthwhile is complete supercharger disengagement in really powerful BT setups (400+) as far as I know. The SC is used with different intention in the Cooper S and RS4 than it is in the Fabia's SC + Turbo setup so you can't just carry over those approaches. Again, think why no other twincharger owner before you insisted on modding the SC despite the fact some of them were in search of absolutely every last bhp they could squeeze out from the engine for pure competition purpose... Of-course you are absolutely free to ignore them and embark on a modding saga, just make sure to stick around and give us updates if you do, it will be an interesting read nonetheless.

I've read the whole topic and all I saw was a lot of urming and arring and not one person trying it , I've sent my pulley off to a specialist to have one made so will put the original back on get it dyno'd then put the specialist pulley on and get it dyno'd again on the same dyno 

Looking forward to the results.

 

Kobyayashi, 

maybe put it in 'D' then because on 'Private' roads S3's and some other Audi's should be  no place until it is double the UK NSL.

Your special bit is the 50-120 or it should be.

2 hours ago, thomasaspin said:

I've read the whole topic and all I saw was a lot of urming and arring and not one person trying it , I've sent my pulley off to a specialist to have one made so will put the original back on get it dyno'd then put the specialist pulley on and get it dyno'd again on the same dyno 

 

I want to help you with this project, because obviously if a new mod comes out of it we are all going to want one. I am curious as to how you intend on defeating the following stumbling blocks though: the DSG has a torque limiter and will go into limp mode if it is exceeded. Also the ECU monitors the boost in 3 locations and will go into limp mode when overboost is detected. Finally, as reducing the pulley size will cause the cut off to happen sooner, how do you intend to fill in the gap in the torque curve until the turbo can reach peak boost?. 

 

What if: you instead used a pulley twice as large and had the supercharger active over the whole rev range but at half the boost? Obviously peak torque would be lower but since the DSG will keep the turbo in peak horsepower range in the automatic modes you might actually end up with more peak power.

3 hours ago, Awayoffski said:

Looking forward to the results.

 

Kobyayashi, 

maybe put it in 'D' then because on 'Private' roads S3's and some other Audi's should be  no place until it is double the UK NSL.

Your special bit is the 50-120 or it should be.

yes I know what u mean 50-120 is also good but lower speeds higher revs with intake & milltek u hear gear changes in manual & slight grunt sound. Its really awesome. Car never did this b4 mods and dont get much chance to get above 70!

Edited 21 April, 20179 yr by Kobayashi

Personally i prefer stealth mode.

Let those Audi Drivers think you are in a dirty diesel like they are, wash their windscreen a couple of times, give them a blast of soot. then boot it and see if they really want to be in your back seat.

If they have a nice 3 litre diesel or some Audi that can shift they are welcome to go on passed.

If they only catch up once you get held up by some other vehicle but they want to sit on your jacksy repeat.

At best the supercharger is only useful in first gear for launching without launch control. Once the car is moving at maximum revs in 1st gear the supercharger has almost not involved unless the revs drop below 3500 rpm and you shift down in time.

 

Think old school. Make sure the heads can flow the power you want before you force them to do something they can't. 

On 21/04/2017 at 12:45, thomasaspin said:

I've read the whole topic and all I saw was a lot of urming and arring and not one person trying it , I've sent my pulley off to a specialist to have one made so will put the original back on get it dyno'd then put the specialist pulley on and get it dyno'd again on the same dyno 

 

Any news on this?

On 29 April 2017 at 13:19, FlexibleMouse said:

 

Any news on this?

small update chaps , pulley has been made!! just need to get car dyno'd before fitting pulley, then have pulley fitted, then dyno again! will then be ten for sale if any considerable gains are had if anyone is interested  

2 hours ago, thomasaspin said:

small update chaps , pulley has been made!! just need to get car dyno'd before fitting pulley, then have pulley fitted, then dyno again! will then be ten for sale if any considerable gains are had if anyone is interested  

Keep us updated with everything and get it on dyno asap can't wait to see if there is a difference 

Interested in this as well. The pure SC boost curve shows a dramatic downwards curve from almost 1000rpm, maybe an increase in rota speed can shift that upwards a little though the gearbox torque limit might be a problem, especially in 1st where, IIRC, the whole system is already tamed a little.

 

I guess the software would need to be amended to change the crossover points and ideally increase the overall target manifold pressure as well.

so any dyno sheets and/or pictures yet ? 

17 hours ago, fabianoh5n1 said:

so any dyno sheets and/or pictures yet ? 

thanks for the interest in my thread mate , moneys tight at the moment mate so just waiting until i have some disposable income so i can book a dyno run in for the stock levels

Not on the car yet?   So how much for the pulley if it works any good on your car.?  Have you sourced the belt? 

So anxious to see what this can achieve.

On 9 June 2017 at 17:40, Awayoffski said:

Not on the car yet?   So how much for the pulley if it works any good on your car.?  Have you sourced the belt? 

hi mate , the pulley is made exactly the same as the original pulley just smaller but not small enough that the original belt wont fit as the tensioner will just tighten the belt around the new pulley so its essentially just a bolt on mod, i have the pulley but haven't fitted it yet as i don't have funds to run a dyno first so people can see what my car is running standard I'm at my girlfriends at the moment or i would post a picture of the old pulley next to the new pulley 

On 9 June 2017 at 18:00, Skyl1n3 said:

So anxious to see what this can achieve.

heres a picture of the smaller pulley while i wait for funds to get a dyno run of my car on a standard map 

If funds won't allow for a dyno run yet can we have a quarter mile or some in gear times? 

Any news on this? Seems to have gone quiet? 

Any more going on, are they fitted yet?

Plenty of tuning shops offer shorter pulley service on supermini's and the like (for the eaton supercharger though),  Dyno readings would be interesting on the mk2 vrs

 

http://www.kavsmotorsport.com/mini-tuning-products/mini-cooper-s-supercharger-tuning

Edited 8 August, 20178 yr by Kobayashi

I think this went quiet for a reason, how can a supercharger mod increase top end power when it only works to 3.5k with the standard pulley?. All we are ever going to get is more low end torque with a smaller pulley, we need a bigger pulley so the supercharger is active all the time, but then the supercharger would just be a huge restriction and you'd need a massive intercooler to stop it blowing up.

I'm just out of money at the moment in honesty 

On ‎08‎/‎08‎/‎2017 at 12:10, FlexibleMouse said:

I think this went quiet for a reason, how can a supercharger mod increase top end power when it only works to 3.5k with the standard pulley?. All we are ever going to get is more low end torque with a smaller pulley, we need a bigger pulley so the supercharger is active all the time, but then the supercharger would just be a huge restriction and you'd need a massive intercooler to stop it blowing up.

would be a risk especially on your 1st oem supercharger, read that ur lucky to get to 50 60k miles anyway without the water pump failing.