: 2005 Sts V6 Hp

07-15-08, 10:56 AM
Does anybody know how to increase HP for a V6 engine beside cool air intake?
I was kind of upset to see the 2008 STS have better MPG and a whole lot more HP (302).

07-15-08, 11:11 AM
The '08 has a direct injection engine; that is where the extra horsepower is coming from. Your engine is right around 255, which isn't bad at all.

07-15-08, 12:31 PM
Yeah you are right 255Hp is not bad but more kick would be a lot better.

07-16-08, 03:25 PM
Yeah they advertise 302 hp out of the new direct inject 3.5 V-6, but that's 213 cubic inches and 1.41 HP per cubic inch, that's a mighty bold claim for a 6 banger, I'd like to see that on a dyno test. I have the V8 Northstar and am glad for 2 more pistons and a lot more technology behind the engine.

07-16-08, 03:27 PM
Oh yeah, one more thing, let's see what HP is getting to the drive wheels, that's where the proverbial "rubber meets the road" counts