Completed a back to back test on a Peter's beastie VX220 VXR
Peak power increase was 10bhp as you can see and holds it for a good 2000rpm at the top end and although peak torque was only up 1 you can also see that short of 4250-5000ish it makes more power and torque across the range in different levels
What was interesting is on the large cone filter / 80mm outlet / 70mm pipework to turbo the boost control by the oem ecu was all over the place and took 5 runs to get a consistant 3 power runs to get the best baseline. With the new kit on all 5 runs were almost identical in boost curve and the power was within 1bhp clearly it is now holding a touch more boost also as a result of the better breathing and all in all a beast of a car
As not many people go to the trouble of a proper back to back test I thought I would share the data and as most know Chris & I have no means to map the oem ECU and the only changes was the intake, even the recirc was the same. All done on the same day, fuel etc etc
Oh and this was on the oem paper filter so perfect filtration
Before
371bhp
355ft/lb
After
381bhp
356ft/lb
Again these rollers dont do well for pub talk and seem to be reading about 10bhp less than the other major ones for reference
DG