Intake and software upgrade for the 4.4 X5

[Greekthang]

Hello guys,

I am interested in getting an X5 4.4 here in canda. I looked into bringing a 4.6is from the States but cant be bothered with all the paperwork. Now I know there are a few performance parts for the X5 4.4 that will help it pick up and go to bring the power closer to the 4.6is

Shark Injector

Intake

Has anyone done these 2 upgrades and what you would be looking at in horsepower and torque increases.

Is there anything else out there ??

Thanks guys

[jst2878]

youll have to spend about 5000 to maybe get as close in hp as the 4.6. do the paperwork and get the 4.6

[JCL]

The 4.4 (up to 2003) had 282 hp. The 4.4 (from 2004 onwards) had 315 hp. The 4.6 had 347 hp (from a quick web search, and I know that hp ratings varied by geographic region due to different measurement standards)

A Shark Injector (available for the 3.0, not the 4.4) adds about 2% according to the manufacturer. Combined with an intake, the manufacturer suggests you can see 4% gains. That is generally within the range of error of a dyno, so your hp gain may vary. If in fact you got the 4% on your vehicle, your 282 hp 4.4 would be making 293 hp. Other aftermarket intakes, chips, exhausts, etc, will have similar results.

Nothing short of a supercharger will raise the power of a 4.4 by any appreciable amount. A supercharger is upwards of $5k.

So, buy a 4.6, or buy a 4.4 and enjoy it for what it is, a great-driving SUV. Add the 4.6 body kit if you want to. If you want to go faster, you probably shouldn't be in a 3 ton vehicle.

[Greekthang]

Thanks people. I think Ill just leave it alone. I have done the speed thing already just gonna enjoy the truck as is. I will be lowering it a bit and slapping on 22's for sure so Ill keep you guys posted

thanks again

[FSETH]

Originally Posted by Greekthang

I will be lowering it a bit and slapping on 22's for sure so Ill keep you guys posted

You may want to go ahead with the software and intake mods to compensate for the extra wheel weight.