Yep was a good day, not just limited to Mk5 platform stuff so no real relevant times of massive interest here.
The RS4's were just immense, I've never really experienced 700BHP+ before, there was a lot of time spent doing the live mapping which ended up revealing a fuelling issue. So it was all hands on deck to get more fuel to the engine.
Quick call to Loba gave us a checklist of stuff to check, long story short on the big BHP RS's it's normal to remove the one way check valve which leaves the fuel lines pressurised and reduces cranking time on start, from a 9-10mm pipe the valve reduces flow through less than 5mm add in the fact that it was a few years old and it had to go....
So out it came
Offending item....you got one in your mk5??
So with plenty of fuel the car was running well, the extra torque then highlighted a heavy duty sintered clutch that hadn't bedded in properly which came to us over the course of 6-7 fast pulls.....car had ceramics on it which performed well.
This thing was fast....the pulls were relentless it was wired expecting a gear change and looking at the RPMs and it being about 4.5k!
Another RS had similar results, it became very evident these cars are just too fast to tune properly just on the dyno and the road, it was only the fact we were at brunters that highlighted some of the issues so a result.
Stevie turned up with the Porsche and the 4XX equipped Eddy after lunch and went straight out for some runs with some great formation runs with the RS4s.
I did a 30-130 with Steve but we forgot to log it, we were hoping the SD card got it, no doubt they did some more after I left mid afternoon.
One things for sure though the Golf is a very quick car, the big pulls down the straight with the 997T and the RS4s did leave the golf behind as expected.....NOWHERE near as far back as you'd expect....this thing will embarrass some super cars it held its own. golf was Indicating about 170mph down the long straight repeated stops on the brake killing circuit which is brunters highlighted no issues even on Blue Pads. So I was chuffed with that they run very cool by design it was a good demo of what they are capable off. Eddy was standard weight not stripped out and had another 100BHP and 100KG on the cup cars so a good test
It sort of proved some of the upgrades some of the cup teams have asked for on the caparo setup which as you know is a simple bolted affair with a unbranded rotor.
This is the fully floating VWR bell which will run the same rotors Steve was running on the golf yesterday
So on a non race pad it was managing the heat, the back side of the bell is a little tricky.
So without turning this into a brake ad, the Golf was mega. Timings to follow shortly....the day wasn't about shooting times it was very much about data gathering for Loba and the 4XX mappers. The 4XX is still on a beta map with lots to do to get it 100%, it was a very unique power delivery in the golf it's very fast and a BIG stepup from a Stage 2+, I'm not saying its (Hyabusa) religious fast but there is a country mile between this and the fastest KO4 car out there.
Everybody kept referring to it as the "little" golf amongst a brace of 700 BHP RS4s but it held its own and if it had been there on its own would probably been more impressive
