Exhaust Idea Tell Me If I'm Crazy.....

[djs2k2]

Hey dean just curious if you have before and after dyno's?

 

[d_adams]

No, but the average xb9 makes about 75 hp at the wheel, mine's at 83 or 84 now and still obscenely rich.

 

[WIGGLE2]

No, but the average xb9 makes about 75 hp at the wheel,

Very close! Pure stock and I would speculate closer to 71ish. I have an '05 9SX with a Jardine only...NO other mods...not even a K&N , and on (2) different dyno's made 73.9 and 75.1 respectively.

 

[d_adams]

I was trying to be optimistic for stock power, didn't want mine to look _too_ good. It's also north of 35k miles and as far as I know has never been rebuilt. I know for sure they're stock size pistons, no oversize. I think the true average might be a little lower and only about 60 ft/lbs of torque, I could be wrong about it though.

 

[WIGGLE2]

You are doing pretty good there Dean! I would NOT be afraid to say that a stock 9 is 71-72 RWHP. I was in the 20k mile range when I ran mine. I couldn't believe it was only 73.9 on a Dynojet at a Ducati shop....it was their open house and dyno pulls were like 5 or $10 for HP only. 1 single pull. So at another venue that had one of the Dynojets in a trailer, I ponied up a good bit more money just to see. Guess what?! Nearly identical.