Yesterday a customer came in with an Insignia VXR looking for a Remap and some Dyno Testing… and thats what he got!
First the Insignia was strapped to the dyno after ensuring the customer had good fuel in the car so a baseline power figure could be obtained. Some tuners have difficulty providing customers a true comparison power plot on these cars because of the speed limitation in 5th gear. We had a way around that 
The customer was curious as to what the difference in transmission loss in 2wd and 4wd, and we were good enough to oblige. The losses are quite staggering, but in 2wd mode you do get a far more accurate reading for flywheel power.
The car was then remapped and put back on the rolling road.
Final gains from stock the stock figures of 341bhp and 342ft/lb to the remapped figures of 367bhp and 413ft/lb were 26bhp and a huge 71 ft/lb… transforming this already quite quick, but heavy car into something with far far more urgency in acceleration, particularily in gear and on the motorway. The remapped software also removed the speed limitation and increases the red line from 6400rpm to 7000rpm!
Stock dyno graph here
Remapped dyno graph here
Below is a 4th gear comparison graph and it shows, stock and mapped side by side.
Click here to see a larger version.
As you can see, the boost characteristics in the midrange is significantly altered. this gives a large midrange punch and gives a hike in torque. the lambda readings from both exhausts with the remap are spot on target and show why this map still returns great fuel economy – better than stock on a motorway run!
The Regal Insignia VXR software maps are available now, priced at £480
