|
Engine Stage 1
TEST 3 – As Per TEST2 plus Changed Panel Filter – Road Test
Unlike TEST2, no surprises were to be had with any increase or change in noise. As the original airbox was still retained, any induction noise was kept to a bare minimum due to the original enclosed box.
Upon road testing, it was clearly evident that slightly more response and sharpness had returned low down. Looking back at the graph, it denoted that torque was increased during spool up which was certainly related on the road to a crisper feel.
Again as TEST2, spool up was quicker, by reaching full boost (1.50 bar) at 2600rpm, some 100rpm earlier than TEST2 and now 500rpm earlier than Base Line.
Let’s be honest, both rolling road tests and road tests certainly seem to be heading in the right direction.
The bigger surprise came after 4500rpm to the redline. Even though the graph shows increases in this range for both power and torque, on the road it pulled and reved much better….. more than the rolling road figures would suggest. Again, even though the boost was still not being held above 6000rpm (dropping from 1.3bar to 1bar between 6-8k rpm), I couldn’t tell of any decernible drop in power (in fact the bhp actually levels quite nicely on all graphs) and again after TEST3 the top end had the edge over TEST2.
As TEST2, I was very surprised at the overall difference this simple modification made. Perhaps I shouldn’t of been as many simple, taken for granted and well chosen modifications can deliver what they are supposed to.
|
