Pontiac Solstice Forum - View Single Post - Official LNF HP/Torque graph

Quote:

Originally Posted by LBJay

Looking at the chart, torque starts dropping after 5300. Looks like they stop logging at about 5500...

The reason the HP and tq are dropping off is because they let off the gas at 5300RPM. Maybe that's what RPM they have limited it to in the tuning? Take away the RPM limitation (point at which they let off the gas), and extend the graph up, and here's what you get.

I know it might not be linear up to 7k RPM, but you get the picture. I'd bet GM is way underrating these by using a lower redline as their rating point.

Let me be the 1st to guess that bone stock, and moving the redline up to 7k in the ECM, it should dyno 240+ HP to the wheels, and that's at the stock boost levels. Throw in some race gas and up the boost about 6psi and it should see 300+ RWHP. Just .02 from a long time performance guy who has seen a few turbos in his day. (Check out my home page...) I could be way off on this, but that dyno graph they published jumped off the page, slapped me in the face, and told me it was time to reveal it's hidden secret. It's WAY too obvious to me that they quit the dyno pull at 5300RPM.

Comments?

	Buzz Lightyear Member Join Date: May 2006 Location: Central Arkansas	Quote: Originally Posted by LBJay Looking at the chart, torque starts dropping after 5300. Looks like they stop logging at about 5500... The reason the HP and tq are dropping off is because they let off the gas at 5300RPM. Maybe that's what RPM they have limited it to in the tuning? Take away the RPM limitation (point at which they let off the gas), and extend the graph up, and here's what you get. I know it might not be linear up to 7k RPM, but you get the picture. I'd bet GM is way underrating these by using a lower redline as their rating point. Let me be the 1st to guess that bone stock, and moving the redline up to 7k in the ECM, it should dyno 240+ HP to the wheels, and that's at the stock boost levels. Throw in some race gas and up the boost about 6psi and it should see 300+ RWHP. Just .02 from a long time performance guy who has seen a few turbos in his day. (Check out my home page...) I could be way off on this, but that dyno graph they published jumped off the page, slapped me in the face, and told me it was time to reveal it's hidden secret. It's WAY too obvious to me that they quit the dyno pull at 5300RPM. Comments?