Good weekend!
Stupidly busy, havn't stopped all weekend or had time to update this!
Saturday morning I set off early and headed down to Littlehampton to meet Ben, Benjamin on here, and the man behind Parsons Performance. Ben doesn't currently have a dyno at his workshop, so we met up at Devil Developments in Littlehampton, to use their dyno.
I bet up with Ben and Reesy mid morning, and we convoyed down to Devil, where we loaded the A3 onto the dyno:
We ran it, and it returned 297bhp on actuator, and on a few different runs, 327/328/341bhp on boost, with the typical AGU management giving slightly more boost on each run, hence the rising power.
On the road the car used to run 20ish psi, it was mapped for 21psi, and on track it lifts itself up to 23-24psi. AGU management is so strange!
After the runs, Ben got to work on swapping the cams over. This was very odd for me, as usually I do everything myself on the car, but the test day was originally Bens idea, and Lee who owned the place nows Ben well, and to be fair, Ben could get it done a LOT faster than I could, the man works fast!!!!
Traditional comparison shot:
New cams in:
And time to run again:
And after all that, I forget to get the dyno print outs! haha.
Post cams, the car ran 327/329/346bhp, so to be honest, the results in that sense, were pretty similar. Things stayed relatively similar power and torque wise, although boost was down around 2-3psi for the same power, and the car was running richer.
As tuffty found, there was small losses low down, although very small, and higher up after 5500rpm it holds onto the torque and power better than before, but due to the way my map tapers off at the top end currently, it's not making full use of the cams where they want to flow more.
On the road, it feels brilliant, the small losses low down cannot be felt, and the willingness to pull beyond 7k is very apparent, it feels more free
Also, since driving it more, it seems to be getting quicker.
On the dyno straight after the cams, it ran richer than before, with my in car wideband showing 10's at WOT. After 100 miles fuel trims are now shwoing -4.7%, so it's removing fuel, and my wideband is showing 11's at full chat, and it feels absolutely ballistic, definitely faster than it was when first done, all from just 19psi, dropping to 17psi at the top end.
I think there is more to come from it, it doesn't get all that hot, the manifold doesn't glow like it used to, and it doesn't pull any timing anywhere, yet still feels crazy fast.
All in all, very very happy indeed
Huge thanks to Ben for suggesting /sorting out / doing the work on Saturday, had a top day, much fun messing around with Ben and Reesy, and I hope the lads enjoyed the ride in the car, I certainly enjoyed taking bens M3 for a driveby
that doesn't comply either....
