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ba xr8 performance mods 

 

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 Post subject: ba xr8 performance mods
Posted: Fri Dec 11, 2009 8:07 pm 
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hi there every one just wondering what sort of performance mods you can do to the boss 260 engine, with out spending a mint, i already have the following on my ute

growler cold air intake, hm extractors, twin 2 1/2 '' red back exhaust, 25% underdrive pulley kit, capa flash tune (but just the standard tunes)
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 Post subject: Re: ba xr8 performance mods
Posted: Sat Dec 26, 2009 9:51 am 
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NSW, Australia

Sound like you've got most of the smaller mods you can do. Maybe larger throttle body, cams, injectors, port n polish heads (done your self if you know what your doing). But if you can put around 5-6 grand together you should supercharge it. Everything else you do to it will never be enough.
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 Post subject: Re: ba xr8 performance mods
Posted: Sat Dec 26, 2009 10:41 pm 
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Joined: 24th Nov 2004

Ride: '06 BF GT-P

Power: 293 rwkw

Location: Canberra
ACT, Australia

torpy79 wrote:
Sound like you've got most of the smaller mods you can do.


That's right, from here on out, it gets expensive.

Quote:
Maybe larger throttle body, cams, injectors, port n polish heads (done your self if you know what your doing). But if you can put around 5-6 grand together you should supercharge it. Everything else you do to it will never be enough.


larger TB, is useless until you're making A LOT of power.

cams - not worthwhile on a BOSS260, unless you also raise the compression ratio (meaning bottom end rebuild)

injectors - not worthwhile until making more than ~350RWKW

For now, next steps I'd recommend...
- upgrade exhaust (those components you've already got aren't the best out there - look for DiFillipo headers and exhaust)
- custom tune (these are expensive, so get all the hardware you want done first, and get it tuned once).

 

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1998 DL LTD in Sparkling Burgundy, daily, 302W, stereo, slow - 97.5rwkw
2006 BF GT-P in Ego, mods. 293rwkw - 12.427@109 - 0-1000m 24.838@221

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 Post subject: Re: ba xr8 performance mods
Posted: Tue Dec 29, 2009 11:35 pm 
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Can you get the compression up enough with a surface grind?
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 Post subject: Re: ba xr8 performance mods
Posted: Fri Jan 01, 2010 8:09 pm 
ACT Cruise Moderator
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Age: 36

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Joined: 24th Nov 2004

Ride: '06 BF GT-P

Power: 293 rwkw

Location: Canberra
ACT, Australia

lol no.

260 is 9.5:1 (means they love boost!)

290 spec is 10.5:1
302/315 spec is 10.8:1

 

_________________

1998 DL LTD in Sparkling Burgundy, daily, 302W, stereo, slow - 97.5rwkw
2006 BF GT-P in Ego, mods. 293rwkw - 12.427@109 - 0-1000m 24.838@221

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