[Marc S]

I dynoed mine before and after. The A/F went from from 12.6 to 13.4.

 

[Marc S]

I would not have thought the A/F would have changed that much either because the HP gain was not very impressive.

 

[Marc S]

Mac L/T and their O/R prochamber. I gained 11 HP at the peak and lost 2 ft pounds of tq at the peak. However, between 2900 and 3700 RPM's I picked up 37 ft lbs of tq and the tq curve is much flatter. At 6350 before the headers I was making 215 ft lbs and afterwards I am still making 245 ft lbs at 6350. My results showed a bigger overall improvement in the tq curve and not the HP curve. I am sure the loss of tq at the peak is due to the larger primary tubes. But, I have a Kenne Bell supercharger that I am installing this month so that will mix my tq loss.

 

[Marc S]

I can do that, there in my shop, I will get them tomorrow.