Wanting quicker acceleration NC with cosworth Supercharger

speed · Postby **speed** » Wed Mar 16, 2016 6:45 pm

^ so less max power

Must have more midrange and I guess also higher ambient temp resulting in less power.

But like I said before, if you are happy that's all that matters

speed · Postby **speed** » Wed Mar 16, 2016 6:45 pm

^ so less max power

Must have more midrange and I guess also higher ambient temp resulting in less power.

But like I said before, if you are happy that's all that matters

Postby **NitroDann** » Wed Mar 16, 2016 9:58 pm

Different dyno different day, it would be more power everywhere but not much because the charger is maxxed. The variance is just the dyno, tyre pressure, how hard its strapped etc.

Dann

Novice1 · Postby **Novice1** » Fri Mar 18, 2016 4:44 pm

The official statement, re why my car made less power.

We had a lot of knock with the new pulley, so we had to pull timing back.
Only towards the end when he upped the octane a bit did it start to quiet
down some. We could try adding more timing back in now that the octane is
improved, but I'm not sure how much more it will be able to take. This
unfortunately is the problem with this stuff sometimes...we don't know which
car will do well with one over the other.

To me the car feels a lot quicker, but then I could be wrong.

Novice1

Dan · Postby **Dan** » Fri Mar 18, 2016 5:07 pm

As I said earlier:

Dan wrote:The key variable that makes it hard to estimate the power increase when reducing the pulley size on a supercharger is the resulting increase in the intake charge temperature which has a number of impacts including reducing the density of the air entering the engine, possibly the amount of timing that your tuner can run without knock (E85 would help this) etc..

Have you got a dashdaq or something to log knock in your car driving it ok the street?

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Sailor · Postby **Sailor** » Fri Mar 18, 2016 5:21 pm

Do you have a 3bar MAP installed and calibrated correctly?
If it's tuned properly with the new MAP you should be able to switch pulleys without a retune.

Novice1 · Postby **Novice1** » Fri Mar 18, 2016 5:24 pm

Sailor wrote:Do you have a 3bar MAP installed and calibrated correctly?
If it's tuned properly with the new MAP you should be able to switch pulleys without a retune.

Re 3 bar map No I don,t.

Novice1

Novice1 · Postby **Novice1** » Fri Mar 18, 2016 5:25 pm

Dan wrote:As I said earlier:
Dan wrote:The key variable that makes it hard to estimate the power increase when reducing the pulley size on a supercharger is the resulting increase in the intake charge temperature which has a number of impacts including reducing the density of the air entering the engine, possibly the amount of timing that your tuner can run without knock (E85 would help this) etc..

Have you got a dashdaq or something to log knock in your car driving it ok the street?

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No i have nothing to log knock.

Novice1

Steampunk · Postby **Steampunk** » Fri Mar 18, 2016 11:53 pm

"Novice1"
Only towards the end when he upped the octane a bit did it start to quiet
down some. We could try adding more timing back in now that the octane is
improved,

"Upped the octane" "now that the octane is improved"
Ron what the f#ck is the guy talking about?! You cannot increase or decrease octane rating via computer tuning because it has nothing to do with it.

Changing to Higher or lower octane means changing fuel.

He's saying he can change the octane rating of your fuel via ECU tuning.
If so then he should charge $5,000 per hour as he's the only person in the world who can do that.

Novice1 · Postby **Novice1** » Sat Mar 19, 2016 12:48 am

Steampunk wrote:
"Novice1"
Only towards the end when he upped the octane a bit did it start to quiet
down some. We could try adding more timing back in now that the octane is
improved,

"Upped the octane" "now that the octane is improved"
Ron what the f#ck is the guy talking about?! You cannot increase or decrease octane rating via computer tuning because it has nothing to do with it.

Changing to Higher or lower octane means changing fuel.

He's saying he can change the octane rating of your fuel via ECU tuning.
If so then he should charge $5,000 per hour as he's the only person in the world who can do that.

Octane Booster was added, to petrol. Octane was not changed via tuning.

Both my mechanic and tuner in USA both said it was pinging its head off.

Regardless, the car feels quicker to me.

Novice1

bruce · Postby **bruce** » Sat Mar 19, 2016 4:29 pm

What an absolute waste of time and money.

Postby **NitroDann** » Sat Mar 19, 2016 5:29 pm

I feel like someone should just start building turbo NCs.

speed · Postby **speed** » Sat Mar 19, 2016 6:50 pm

NitroDann wrote:I feel like someone should just start building turbo NCs.

I want to know when you do an ND. Don't have one just believe it will be poetic justice

Dan · Postby **Dan** » Sun Mar 20, 2016 10:33 am

NitroDann wrote:I feel like someone should just start building turbo NCs.

Do it!! Not sure how big the market is right now for it but with NC prices coming down it can only get bigger

A bigger supercharger can do the trick too.. This dyno graph come out of the states recently of a car using Danny's HKS supercharger kit on a 2.5, nearly 350hp from a supercharger seems pretty tasty

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