AU true power and performance

[jonbays]

Lots of dynoshopping going on for the best numbers these days and its hard to tell what you might expect to get out of your AU so here is some real average sort of numbers that you could reliably expect to get in terms of rwkw fwkw 0-100k and 1/4 mile. Read and weep people this is what they are really good for no BS.

Model FWKW RWKW 0-100k 400m
AU Auto 157 105 8.8 16.3
AU 5Spd 157 105 7.9 15.8
XR6 Auto 164 115 7.9 15.8
XR6 5Spd 164 115 7.5 15.5
XR6 VCT Auto 172 122 8.2 16.1
XR6 VCT 5Spd 172 122 8.0 15.9
Ghia VCT Auto 168 118 8.2 16.1
Ghia V8 Auto 175 125 7.9 15.8
XR8 Auto 185 135 7.5 15.5
XR8 Auto 220 170 7.2 15.2
XR8 5Spd 220 170 6.0 14.2

[Casper]

Any sort of basic exhaust mod will see those figures change dramatically.

[xr8ute]

..or even just a cam, in the case of the AU XR8 185kw ;)

[Qwikcorty]

why is the vct 5 speed slower than the std one?
and what do you think a au xr8 185 auto will do with just basic intake, extractors and twin exhaust, unichip mods?

[loxxr6]

why is the vct 5 speed slower than the std one?

The **** end is heavier coz of the IRS.

[Stav]

Originally Posted by Qwikcorty

why is the vct 5 speed slower than the std one?
and what do you think a au xr8 185 auto will do with just basic intake, extractors and twin exhaust, unichip mods?

Mate I think you are comparing the detuned ghia vct to the xr6.

[Sylox]

Originally Posted by jonbays

Lots of dynoshopping going on for the best numbers these days and its hard to tell what you might expect to get out of your AU so here is some real average sort of numbers that you could reliably expect to get in terms of rwkw fwkw 0-100k and 1/4 mile. Read and weep people this is what they are really good for no BS.

Model FWKW RWKW 0-100k 400m

XR8 Auto 220 170 7.2 15.2
XR8 5Spd 220 170 6.0 14.2

There is an error there, no way the auto is a full second slower on the 1/4 for the same 220xr8 unless the auto if fck'd

[MrLandau]

The auto computers have far more torque tags built into them - the auto's also rob more power. A manual can be launched at whatever revs you want it to but you cant do that with a stock torque convertered auto.
The VCT was a heavier car than the standard XR6
Shane

[JC]

Originally Posted by Qwikcorty

why is the vct 5 speed slower than the std one?
and what do you think a au xr8 185 auto will do with just basic intake, extractors and twin exhaust, unichip mods?

My AU1 XR8 auto has YT Roller rockers, Herrods 4-1 extractors, single 3" system, larger MAF and various airbox mods and does a best time of 7.2, and has pulled 147.9 rwkw (before the headers went on). Just a guide for you.

Jonbays - the rest of your figures look OK, apart from the Auto 220 one - but then that is also plausible given the torque reduction of the auto.

[FTE217]

: I'll take second place in lazymatic form without an effort :

I have to mention jonbays where did you get 170rwkw for the XR8220auto ?
Unfortunately I didn't spin my wheels on the dyno before the exhaust was done but with zorst and chip I am flat out getting 178.1.
Before chip I spin around 153 or something.
If it was a true 170 in stock form I would be around 195ish which I wouldn't complain :sm_headba

[Dauphin]

Hi all,

I find this thread interesting and would like to mention what I had done by JMM and what the figures became. Car is a Ghia VCT auto.

2.5" exhaust and race series headers: 130rwkw

As above, adding Unichip, pod filter and pig pipe: 152rwkw

Hope that helps.

Regards,

Andrew.

[Sylox]

The torque tags dont slow it up that much in the auto. I've increased the amount the ecu plays up due to my diff gear change and I'm only still .5 off the pace.
I'd nearly bet on it that if you put a manual and a auto au3 220xr8 side by side (completely stock) on the strip that there wouldnt be a second between them maybe .5

[jonbays]

Well Its just an average guide I came up with from going to lots of dyno days and being a bit of a nut about collecting AU tests in old mags.

Its what you should expect on AVERAGE. Not all AU's are equal, we all know good and bad ones but I thought I would post up what I reckon is your average you should get. Obviously you might do better or worse in any one individual case though. Its true enough Auto will show slightly lower rwkw than manuals and I haven't factored that in as my experience suggests there is a greater difference between cars themselves than whether they are auto or maual on the dyno anyway.

[jonbays]

Originally Posted by Sylox

There is an error there, no way the auto is a full second slower on the 1/4 for the same 220xr8 unless the auto if fck'd

Yes I agree with you on that one but funnily enough I have a test on a TE50 Auto that only ran 0-100 in 7.23 and the 400m in 15.19.

Anway yes its a mistake I would agree 14.7-14.9 would be more likely.

[XR_Strider_GuY]

jonbays,

Good sum up there. As you rightly fully said not all AU's are equal but your guide is definitly on the ball park for an average comparison.

A good example of this is the manual XR6 HP best ever they extracted (after a few runs and getting clutch slip right) is a 15.33 whilst later comparo's in AUII form show times of 15.5 - 15.8.

I too would like to know my dyno to 1/4 reference.

[au-steve]

no way the auto is a full second slower on the 1/4 for the same 220xr8 unless the auto if fck'd

I agree. the autos in thoses things are nice as.
do the manual versions suffer as bad from all the torque reduction built in the ECU?

[Sylox]

No the manuals arent affected any where near as much, but the auto's arent affected enough to make a full second between them on the 1/4 in stock trim

[Stav]

Originally Posted by Sylox

The torque tags dont slow it up that much in the auto. I've increased the amount the ecu plays up due to my diff gear change and I'm only still .5 off the pace.
I'd nearly bet on it that if you put a manual and a auto au3 220xr8 side by side (completely stock) on the strip that there wouldnt be a second between them maybe .5

Sylox did you change your tailshaft at the same time as your diff to a 3.9 ratio?Torque sensors are often placed on the tailshaft as a safety mechanism on other cars to avoid danger.. I know this for a fact now.

[xr8ute]

Torque Sensors in tailshafts? Which cars?

Our EECV doesn't get a value for torque directly from any sensor. It calculates (estimates) torque figure using things like RPM, load MAF/MAP, and VE tables.

[Stav]

Hi Mate.Lets just say I have been reading up on tuning and modifying engine management systems and one of the topics outlined is the torque sensors.Which is synonymous with the torque reduction problems that I am hearing about.An excerpt as followes.."Torque sensors measure the strain on an input shaft or axle to provide a snapshot of the force being applied to the rotating shaft.They are useful inany area that requires the monitoring or control of a rotating shaft"

Bibliography/ How to tune and modify Engine management systems/motorbooks workshop by Mr Jeff Hartman.

[Casper]

Useless, there has never been an actual recorded incidence of torque reduction occuring in an I6 auto Falcon that I know of. I dont think you have to worry about that.

[Stav]

I know that Shane but perhaps it is a stepping stone for our v8 buddies

[Casper]

Originally Posted by useless

I know that Shane but perhaps it is a stepping stone for our v8 buddies

Its already a known issue in the V8's and the edit appears to be the only way they will get around it. Not much more they can do about it.

[Stav]

I think that if the sensors on the v8 au's are located and studied that they can be by passed and with some type of resistance or capacitance be made to eliminate torque reduction all together.This is how chips work on other aspects of car tuning.They are generally of a magnetic nature and would most probably emit a pulse to indicate rpm of the tailshaft.Hence the reduction of torque per unit of time when the tailshaft spins at a too rapid rate ..

[Stav]

It could be as simple as ripping a magnet off.

Originally Posted by Bluedriver

: I'll take second place in lazymatic form without an effort :

I have to mention jonbays where did you get 170rwkw for the XR8220auto ?
Unfortunately I didn't spin my wheels on the dyno before the exhaust was done but with zorst and chip I am flat out getting 178.1.
Before chip I spin around 153 or something.
If it was a true 170 in stock form I would be around 195ish which I wouldn't complain :sm_headba

Im with you Bluedriver 170rwkw std ,ive waisted a lot of money for 11.9rwkw

[xr8ute]

Some cars may use this method for measuring torque, but unfortunately our EEC-Vs don't.

[Sleeperau]

Originally Posted by jonbays

Lots of dynoshopping going on for the best numbers these days and its hard to tell what you might expect to get out of your AU so here is some real average sort of numbers that you could reliably expect to get in terms of rwkw fwkw 0-100k and 1/4 mile. Read and weep people this is what they are really good for no BS.

Model FWKW RWKW 0-100k 400m
AU Auto 157 105 8.8 16.3
AU 5Spd 157 105 7.9 15.8
XR6 Auto 164 115 7.9 15.8
XR6 5Spd 164 115 7.5 15.5
XR6 VCT Auto 172 122 8.2 16.1
XR6 VCT 5Spd 172 122 8.0 15.9
Ghia VCT Auto 168 118 8.2 16.1
Ghia V8 Auto 175 125 7.9 15.8
XR8 Auto 185 135 7.5 15.5
XR8 Auto 220 170 7.2 15.2
XR8 5Spd 220 170 6.0 14.2

Interesting Jonbays i noticed you didn't mention a pig pipe. I have noticed a consirerable gain with one, albeit without dyno results.

[jonbays]

Originally Posted by Sleeperau

Interesting Jonbays i noticed you didn't mention a pig pipe. I have noticed a consirerable gain with one, albeit without dyno results.

Didn't mention it cause they don't work really. Better things to spend your money on. Can be a small gain on highly modded big breathing engines turbo or V8 maybe worthwhile but on sixes this side of 150rwkw which is most they don't make any real difference.

You can't tell the difference on the road of a high flow intake system. Its just not that big a deal.

[TCK-098]

When i first started modifying my AU series1 VCT Ghia first thing as follows......
Results are from the MDX dyno at cresent motorsports
Cat back exhaust and air filter-peaked 126kw and averaged 116kw......

Then went back with PIG PIPE and SS INDUCTION fitted and averaged 126kw and peaked at 133kw......
Oh then i did a run at REDCLIFFE DYNO back in august this year and got 133rwkw before PIG PIPE was fitted..................

Now car has been fitted with a brand new Exhaust system and Advance headers and with the other goodies the car has around the 140rwkw and it feels like it too when you open it up.

Thats my view on things.......