Still would be nice to see back to back testing..

There can be many variants on rolling roads day to day let alone 4 years apart.

Don't get me wrong the product looks good ...

 

There can be as many variants as you like, but the fact of the matter is, after 4 years and 20+k miles the number should only ever go down. It was the same rolling road, same operator, same settings and same software.

So if after 4 years of hard abuse the number goes up that does really tell you everything you need to know. With just the headers and the old map the car was pulling 412hp. on the original map it pulled 450 on low boost, so to pull 485 on low boost with the only change been the headers after 4 years of hard abuse i dont see what else there is to say about them!

 

Thing is from my experience nothing is set in stone and what works on one car does not always work on another ....

 

Nail on head

 

The only constant with these bloody things is the gaping hole in your wallet