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Help with mods on AU XR8 

 

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 Post subject: Help with mods on AU XR8
Posted: Mon May 07, 2007 8:16 am 
Smokin em up
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Ride: AU3 XR8

Power: 191 rwkw

Location: Sydney
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Hi all!

Im a freshie to the group so I'd like to start by saying hi.

I just recently bought a fully optioned AU3 XR8. Its already got a cat back exhaust but im wanting to do a little more to it.
What mods can be done to give it a good power increase and stll keep the engine bay looking pretty stock?

I look forward to your ideas.

 

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AU3 XR8 Manual, Full options,Pursuit Lip, Boss bonnet, Hurricane extractors, zorst, SS Induction, K&N filter, Flash tuned...191rwkw

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Posted: Mon May 07, 2007 10:10 am 
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heya and welcome dude :)

a full system of extractors will be nice

u could go the bigger tb and maf
then cam and heads, manifold etc and the engine will still look stock

OR..... leave as is and get a supercharger!

kilma has 1 on his e s**t :p and the cops missed it LOL

 

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Posted: Mon May 07, 2007 11:07 am 
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Age: 35

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Ride: AU3 XR8

Power: 191 rwkw

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NSW, Australia

yeah i was thinking headers and high flow cats, biger air intake and throttle body.

Has any one got the Big Mouth air induction? and is it any good?

And how about that CAPA Flash Tuner?? is that any god or will a power chip do?

 

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AU3 XR8 Manual, Full options,Pursuit Lip, Boss bonnet, Hurricane extractors, zorst, SS Induction, K&N filter, Flash tuned...191rwkw

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Posted: Mon May 07, 2007 4:57 pm 
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well with a cappa flash tuner you can put our car on a dyno and tyno tune it, i red an article on a stock au 220kw that made around 15 kw more by changing air/fuel ratio
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Posted: Mon May 07, 2007 5:13 pm 
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leave everything as is and stick a cam in..

 

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Posted: Mon May 07, 2007 6:05 pm 
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The CAPA Flash tuner, is a pretty good tuning tool...just need a good tuner to go along with it ;)

Avoid the Powerchip.

A Bluepower, or G&D CAI would be a good choice.

Leave the stock TB and MAF, they are not a restriction at this level.

A bigger cam, with valvesprings to suit would be my next step.

Have a look outside the motor as well...shorter diff gears (say 3.91 or 4.11:1), and a higher stall converter if its an auto(say 2800-3000rpm) will make it hammer off the line and through the gears.

The very first mod I did to my AU1 XR8 was a bigger cam, everything else was stock...and I would do the same again.
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Posted: Mon May 07, 2007 9:24 pm 
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go a set of pacemaker extractors, cold air intake, k & n air filter, an edit and 3.9 diff gears should have you into the 13's. i ran a 13.9 in mine with cold air intake, exhaust extractors and 3.9's

 

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series3 xr8 5 speed manual, pacemaker extractors, 3' exhaust, lowered cold air intake, k&n filter, interior, 3.9s
13.9584 @ 98.51 mph 1.9447 60 ft
188.9rwkw 525nm torque
AU2te50 lowered twin 2.5 inch exhaust

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Posted: Tue May 08, 2007 7:19 am 
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Ride: AU3 XR8

Power: 191 rwkw

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NSW, Australia

Thanks for the replies.

just wondering.. what is the actual purpose of getting bigger cams and valve springs?
Im new to all this so all the advice will help.

and does anyone know of any good workshops around sydney? :D

 

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AU3 XR8 Manual, Full options,Pursuit Lip, Boss bonnet, Hurricane extractors, zorst, SS Induction, K&N filter, Flash tuned...191rwkw

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Posted: Tue May 08, 2007 9:38 am 
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DaveXR8 wrote:
Thanks for the replies.

just wondering.. what is the actual purpose of getting bigger cams and valve springs?
Im new to all this so all the advice will help.

and does anyone know of any good workshops around sydney? :D


Basically a breif explanation of why you would want a bigger cam is that, a "larger" aftermarket cam will open the inlet & exhaust valves further and for a longer duration. The upgradedvalve springs are to allow for the increased lift from the "larger" cam.

 

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