SCT Based (Capa/Stealth) AU EDIT IS HERE... nearly

[Headsex]

Today I was down at Herrods tinkering with my AU XR8 with Jerry(SCT) and Martin(Street Tuner).

ok ok ok. Jerry and Martin were tinkering, I was just the pretty face :>

With a little bit of playing, here is the current results



Now... If you guys remember, I previously have ran a 156rwkw. If you look at this dyno printout, it shows my initial run was 146rwkw. I imagine this due to be the 19" wheels i have recently aquired stealing 10rwkw's of power. BUT, Regardless of that, It went from 146rwkw to 161.7rwkw (we did see 166rwkw on this other printout i have). Thats approx 20rwkw gain !!!

Mind you, we have not even looked at the Torque reduction yet

Thats tomorrows job...

Danny.

[parawolf]

Nice smooth line for both power and AFR...

wonder exactly how quick they will get it fully sorted for the I6

[EFFalcon]

awesome stuff Danny
good to hear that hard work will have paid off!

[Headsex]

Hard work isnt finished yet.... This is the start.. Still have torque reduction to remove, although that might not effect max power, but more bottom end torque..

But i'll keep you guys posted as it folds out over the next few days..

danny.

[XRated]

That is great news! I just wish there was one for the EEC IV. When are they planning to have it ready for EEC V for the I6?

[MNM96]

Waiting, Waiting, Waiting! out: : out:

[Bluehoon]

Originally Posted by MNM96

Waiting, Waiting, Waiting! out: : out:

Stuff the wait, NOW NOW NOW NOW NOW NOW NOW NOW
GIMME GIMME GIMME GIMME GIMME :evilsasmo :evilsasmo

[MNM96]

And I am waiting for details for what it will do for a XR6 HP.

[AU-MUSTD]

Great news guys as i'm keen as mustd to get this done

[SpoolMan]

Looks Good Danny, have you ran your car down the quarter yet?

[12]

There....... now I'm subscribed to this thread.

Watching this one very closely.

[FordFan86]

Could someone just quickly explain the maths or theory behind 19's robbing power?
I know that due to torque multiplication thru the gearbox diff and then thru the tyres would affect torque, but how would it affect power?

(jeez im proud i was able to type that so good... now i better sleep)

[AUIII XR8 MAN]

This is good new to hear. I carn't wait to get my hands on this one. :dr_Evil:

[parawolf]

Originally Posted by FordFan86

Could someone just quickly explain the maths or theory behind 19's robbing power?
I know that due to torque multiplication thru the gearbox diff and then thru the tyres would affect torque, but how would it affect power?

(jeez im proud i was able to type that so good... now i better sleep)

Power = work/time

less power means you are doing the same work in a longer time, or less work in the same time.

Here, Torque, or the turning force is the work (which you understand) - therefore as the 19" might be increasing the circumference of the wheel, therefore increasing the time to do the same work (same complete wheel rotation).

[LTDHO]

Danny, did the tune alone give you over 10rwkw at 66kph? That's very impessive.

[Mr. CVE]

Originally Posted by parawolf

Power = work/time

less power means you are doing the same work in a longer time, or less work in the same time.

Here, Torque, or the turning force is the work (which you understand) - therefore as the 19" might be increasing the circumference of the wheel, therefore increasing the time to do the same work (same complete wheel rotation).

I would agree with that
A friend of minepicks up 9% more power by swapping his 20's back to the stocky 17's

Also I believe weight of wheel / tyre combo plays a significant part as well

[Headsex]

The overall diameter of the 19's (with tyres) is only like 10mm larger than the 17's with the rubber. but as soon as they went on, i instantly noticed a loss in performance. I believe its more due to more weight in the wheels.

As these next few days are not for overall power testing but for cracking the ecu, i'm not going to put the 17's on the back. However, Paul has a dyno day coming up, So i will put the 17's on for that.. That will give a good indication of before and after. I predict it to be approx 175rwkw

Danny.

[LTDHO]

Originally Posted by v8capri

I would agree with that
A friend of minepicks up 9% more power by swapping his 20's back to the stocky 17's

Also I believe weight of wheel / tyre combo plays a significant part as well

LTDHO considers running 165's on 14" rims for next comp!!

[Lightning Strike GT]

Me want NOW
Waiting with baited breath for a Brisbane tuner :
Danny is there a Brisbane tuner or do we wait for Herrods to open up in south east QLD

Alan

[parawolf]

Originally Posted by v8capri

I would agree with that
A friend of minepicks up 9% more power by swapping his 20's back to the stocky 17's

Also I believe weight of wheel / tyre combo plays a significant part as well

Well yes that also has issues in the acceleration (low end torque) as the engine is having to spend more time overcoming interia than transferring it to spinning the wheels. Sort picture this similar to the ice figure skater, arms spread out wide, gives a slow spin, bring arms in tight for a fast spin. No change in weight, just weight distribution and inertia.

The smaller the diameter the wheels (including rubber) and the closer that mass is to the hub the better the acceleration (has similar effect to changing diff ratios!). Naturally a lighter weight helps as well, but also in the case of unsprung weight for handling.

[Headsex]

Originally Posted by parawolf

Well yes that also has issues in the acceleration (low end torque) as the engine is having to spend more time overcoming interia than transferring it to spinning the wheels. Sort picture this similar to the ice figure skater, arms spread out wide, gives a slow spin, bring arms in tight for a fast spin. No change in weight, just weight distribution and inertia.

The smaller the diameter the wheels (including rubber) and the closer that mass is to the hub the better the acceleration (has similar effect to changing diff ratios!). Naturally a lighter weight helps as well, but also in the case of unsprung weight for handling.

That would be correct.. However, i was tired and couldnt be stuffed trying to explain myself i knew what i ment!

d.

[Lukeyson]

AWESOME AWESOME !
I have 2 cars waiting waiting !

[neil101]

put me down for 2, torque restrictions have to go.

Neil

[FTE217]

So Danny how is the testing going now ?
Figures with the Torque reduction done ?

By the dyno chart above I'm assuming your XR8 is stock ?

This will be interesting as my car before chip fitted ran 152rwkw, with chip and a run on the dyno earlier this year was 179rwkw.
So I wonder what more can the Edit do with baited breath :1syellow1 ?

[Headsex]

Originally Posted by Bluedriver

So Danny how is the testing going now ?
Figures with the Torque reduction done ?

Few other BA issues have been worked on in the last few days.

The AU stuff is practically done... I will playing with some torque map tables tomorrow to see what happens when they get altered.

Originally Posted by Bluedriver

By the dyno chart above I'm assuming your XR8 is stock ?

This will be interesting as my car before chip fitted ran 152rwkw, with chip and a run on the dyno earlier this year was 179rwkw.
So I wonder what more can the Edit do with baited breath :1syellow1 ?

My XR8 has done 156rwkw total best. Since that last run, i put the 19's on, and the first one PRE edit on Herrods dyno ran 146rwkw.. So i've lost 10rwkw due to the wheels. I'm sure that percentage would be the same with the new found figure of 166rwkw (the other dyno printout i've got run in 3rd gear) So add approx 10-15rwkw that were lost with the wheels.. so should bring it upto about 175 - 180 area.. I will not know exactly until i run it again on Hallams dyno in a month or so, with my 17's on the back just so we can overlay it with the previous run.

Personally, I think the EDIT will give you better Tunability.. Rather than Better power. Extracting power out of a car is up to the tuner, and would be made easier with this edit.

d.

[FTE217]

Thanks Danny for replying.....mmm this makes it interesting as my dyno figures have all been done with 19 " rims. So by what you say above mine must be reading a higher figure if I put the 17's back on ?
Also my previous figure pre Unichip was as above 152rwkw and thats again with 19's.
This is telling me for a start to put some 17's on for a run and see what my true figure is.
I think the Edit will really help what you're going to work on next which is the Torque maps, it sounds that this will be one of the main features of the Edit,correct me if I'm wrong.

[Headsex]

I wouldnt say the "main" feature is the torque maps. In my opinion, it would be more "better" control of the ecu. Your given the ability to change the same tables that ford used to calibrate in the first instance. You are not guessing hex tables, you are not fulling the ecu, you are Editing the tables which does the ECU how to operate.

In my instance, it will give me total control over forced induction (with bigger injectors, and bigger Maf obviously)

[Headsex]

Originally Posted by Bluedriver

Thanks Danny for replying.....mmm this makes it interesting as my dyno figures have all been done with 19 " rims. So by what you say above mine must be reading a higher figure if I put the 17's back on ?
Also my previous figure pre Unichip was as above 152rwkw and thats again with 19's.
This is telling me for a start to put some 17's on for a run and see what my true figure is.

Its worth a try
As soon as i put the 19's on, i noticed a instant decrease in performance :(
So i dare say, that also includes dyno figures..

[jimt3te50]

that's an inspiring development and a long time coming- there is light at the end of the tunnel!

can't wait!

BTW you can go bigger rims, so long as they are lighter- I don't know too may people who ever consider this when buying wheels- I read on a site some time back that due to the inertia if you dropped 10kg from your wheels is the equivalent of having an extra 20kW. i considered this when I went for the enkei's and have not been disappointed (don't know if it feels that much stronger, but certainly better)

[parawolf]

Originally Posted by jimt3te50

BTW you can go bigger rims, so long as they are lighter- I don't know too may people who ever consider this when buying wheels- I read on a site some time back that due to the inertia if you dropped 10kg from your wheels is the equivalent of having an extra 20kW. i considered this when I went for the enkei's and have not been disappointed (don't know if it feels that much stronger, but certainly better)

Indeed but don't forget you alter your tyre profile - as the added circumference will be like dropping going to a taller diff ratio (not a large impact, but on the search for more torque... ripper).

Lightweight wheels = lower unsprung weight which means better handling and suspension response
Lightweight wheels = lower rotational mass which means less interia (and in fact lower gryoscoptic effect which could mean a long lasting LSD at speeds.
Lightweight wheels = lower rotational mass which can also give a similar effect to a lightweight flywheel which again is kind of similar to a underdrive drive mount assembly pully configuration (faster reving!).

All good things!