probably pretty close - my numbers were at 'Vancouver' (read: PDR) altitude, so if you're close to sea level you'll be in that ball park. Now that I'm up at 7000' my numbers are down a bit -
I had the rig smogged a couple days ago - didn't pass the first time due to too much smoke, but it slapped down 192 hp. So I go back, rotate the diaphram back around to the lean side, crank the starwheel all the way up, and go back to the emissions shop for a recheck - 199 hp, and passed smog! Oo. Woo hoo! - went up 7 hp, had less smoke, and used less fuel - I love this stuff! Not much else has been done to the pump, but what a combo. After I get the engine mods done tho I'll be looking to double every number I've ever produced... . :-laf yeah baby... .
One of the biggest reasons I'm going to twins is for the egt's, especially at this altitude. The more air I can get in the better I'll be, especially with an 8000 lb truck. PDR's stage II head and cam will help the most tho, but the twins come with an ATS manifold for exactly the reason you want to reduce the egt's - the better the exhaust gets out the lower the egt's. I'd go with the ATS all day long, besides it'll give you a really good reason to change out those pesky exhaust manifold gaskets, ja?! :-laf
- S