Yes, it was a 100% bone stock car, no other changes. Their tunes are far more specialized than most. You can also request custom changes if you like.

On the website they used my dyno sheets for the 4.3L with a gain of 31.4hp at wheels, 4.7l is different dyno. Once I go in with my vantage S I will get a custom 4.7 tune. They said there's more power to be had out of the 4.7 tune, they just didn't go that far yet.

Extra 300rpms gives you about 6 more HP (roughly 2hp per 100rpms past stock redline.)

 

I'm interested to know more about this? 'More specialized than most' is a pretty vague statement. In what way are they more specialized? Have you seen the changes that 'most' make in person to compare?

 

Have they posted gains on a V12 tune?

 

www.bamfordrose.com

Though I'm not sure they are shipping to the US yet?

 

+1 too vague for me to entrust an expensive engine to
BTW you are right on the V12 & Octane tuning, not so many people understand it though

 

Not sure if they have done a V12 yet. If any local Houston TX V12 owners want to get a tune, they will give you a great deal if you are the development car. I wouldn't be surprised if V12 yielded 30-40 rwhp.