REVO Stage 4... The BIG BUILD!
Hi Everyone… We’re back!!!!
You can follow our progress on our Facebook Project Page... see https://www.facebook.com/QuattroCupra
Well it’s been a long while since our last update, some of you may have developed grey hairs in the time we’ve been offline so apologies to keep you all waiting!!!
Firstly we have some great news to share with you all in that we have now secured another sponsor for the project. After many discussions and planning behind the scenes, we are very proud to announce our new partnership with REVO Technik!
Yes you’re reading this correctly… we’ve teamed up with the professors in Red to
help transform Kung Fu into a thoroughbred racing machine!
This is a fantastic opportunity for us and a real privilege to be joining forces with them.
REVO are fast becoming one of the biggest and most reputable names in tuning and remapping software, with dealer networks all around the world, these guys are certainly making their mark in the world of motorsport.
Our project Cupra will soon be making its way down to REVO’s development centre, where REVO Kev (head of technical) and his men in white coats will put the car through its paces, getting everything finely tuned and setup for a jaw dropping result in performance and great drivability.
We`ll cover our plans in some more detail a bit later on…
Since our last update, the boys at
Autotechnica have been very busy working behind the scenes, stripping Kung Fu down to the bare nuts and bolts, then building him back together again with all the toys one could only dream of!
List below shows all the hardware installed to date:
Engine Mods
REVO High Flow Air Filter Intake System
REVO Engine and Transmission Mount Kit
REVO PCV Revamp Kit
REVO Integrated Throttle Pipe
REVO Stage 4 Software (coming soon)
Eurojet Front Mount Intercooler
Devils Own Progressive Water Methanol Injection System (with twin nozzle injector upgrade)
ATP Turbo 3” Downpipe (with custom fabrication to Milltek System)
Milltek Custom Design 3” Full Exhaust System with Twin Tailpipes
HEP Stage 1 Inlet Manifold
Garrett GTX3076R Dual Bearing Turbo with 0.82 AR Housing
RS4 Injectors
NGK Iridium Spark Plugs
Wossner Forged Pistons (with custom machined valve pockets by Lee X!)
Integrated Engineering Forged Con Rods
New Cylinder Head with 1mm Oversized Bored Valves
Ferrea Valve Train Set
Camshaft Girdle Bolt Kit
ARP Head Stud Kit
Cat Cams Hot Street Stage 3 Cams
Cat Cams uprated Cam Pulley
New Cambelt
Loba 2.0 TFSi high pressure Fuel Pump
Audi RS3 Sender Fuel Pump
Customs Silicone Hoses (throughout)
Handling Upgrades
Bilstein B14 Pro Coilover Kit
H&R Anti-Roll Bars Front and Rear (rear using kit for Audi S3)
SuperPro Poly Bushings
Suprepro Anti-lift Kit
AWD Conversion & Transmission
Loba Stage 2 Clutch and Flywheel
Quaife Limited Slip Differential
Custom Welding and Fabrication Works to Rear Boot Floor Plan
Audi S3 8P 2007 Salvage Rear Axle Assembly
Front Transfer Box (Audi S3 8P) with new bearings
R32 Propshaft
R32 Saddle Tank and Sender
R32 Tank Sender fuel level meter for Saddle Tank
Modified Wiring Loom from the Golf R32
New AWD Gearbox Outer Casing
Electrics
AEM Wideband Air/Fuel Ratio Gauge
Turbosmart Eboost2 Gauge & Controller
Custom Electrical Cabling and Wiring Accessories
Scientific Grade Poly Tubing for Gauges, Copex and Fitting accessories
Planned Future Upgrades
Haldex Sport Controller for Rear Diff
REVO Big Brake Kit (front and rear)
An experienced driver with NO FEAR… REVO Kev?
Performance
BHP??? Not sure yet… you’ll have to wait and see! Ha
Our last update back in July was following one our biggest shows of the season, the GTI International Show at Shakespeare Country Raceway. The AWD conversion had just been completed on our Cupra, but with only days to go before this big event. This was exciting times for everyone involved and we received a lot of interest and support over that weekend.
We faced a hectic period getting everything ready for the show, but we were also busy planning our next phase of the project, the transformation to Stage 4 along with a big bag of tricks up our sleeves!
If we ever said the project was soon near to a graceful end… we lied!!!!!
We got the ball rolling back as early as April, carrying out some research along with discussions with our key partners and contacts, to evaluate the best direction for the project.
Ultimately two options came to the drawing board:
Option 1: Chase the fillies, rule the roost with the rollers, and lead the pack with the best pub talk around! But then we would run the risk of turning our Cupra into something somewhat un-drivable! Pushing everything to the absolute extreme until either, the engine explodes or the turbo flies off the car and takes someone’s head off! possibly not the best idea…
Option 2: Take a
marginally less aggressive approach and focus our attentions on building something that will last more than a single season!!! But develop a machine that would still give most supercars a good run for its money! and provide great performance for both the track and the road.
Decisions decisions…
Well since the start of the project, we were soon to be on REVO radar, taking much interest in our plans for Kung Fu. It was important for us to build an example using readily available parts off the shelf i.e. show the world what is possible when following a strict list of hardware and software configurations, designed to get the best and most reliable results from the TFSi engine.
Naturally we did steer off the track a little when it came to the additional list of goodies we’ve now installed! But ultimately we have respected the advice and guidelines given to us by the REVO Team, and steered for Option 2! Our TFSi is running well and now performs more towards its natural power curve! he says…
REVO put a huge amount of time and investment into the research of tuning cars, along with many months of testing their products and software before launching to market. It’s an honour for us to demonstrate what really is possible with the REVO product portfolio, these guys are the King of Motorsport when it comes to giving reliable and spine tingling results!
We look forward to showing you all the up and coming results of the build in due course!
Stage 4… The Big Build – Meth & Gauges
So back in the summer, we were busy behind the scenes getting things ready for the next phase of the works i.e procurement of all the necessary parts required for Stage 4 and the next engine re-build. Whilst we were waiting for the main kit to arrive, we cracked on with some of the additional electrics and installation of the water methanol kit.
Two items that were going to be key for the correct setup of stage 4 were:
- Air/Fuel Ratio Gauge
- Boost Gauge and Controller
The
Air/Fuel Ratio Gauge is important to ensure that the right mixture of air and fuel is being pumped into the engine. Accurate AFR data is critical when tuning an engine. Running rich (very low air/fuel ratio, excessive fuel) can cause a loss in power, while running too lean (very high air/fuel ratio, not enough fuel) may result in serious engine damage.
Using a wideband air/fuel controller during the tuning process allows you to monitor the AFR, and adjust the tuning parameters to optimize them for maximum power and efficiency.
We also installed an
E Boost2 controller by TurboSmart. This gauge is one serious piece of kit and is used with some of the most reputable project cars around, pushing some serious power! The boost controller is a device to control the boost level produced in the intake manifold of a turbocharged or supercharged engine, by affecting the air pressure delivered to the pneumatic and mechanical wastegate actuator.
Without a boost controller, air pressure is fed from the charge air (compressed side) of the turbocharger directly to the wastegate actuator via a vacuum hose. This air pressure can come from anywhere on the intake after the turbo, including after the throttle body, though that is less common. This air pressure pushes against the force of a spring which is located in the wastegate actuator, this allows the wastegate to open and re-direct exhaust gas, so that it does not reach the turbine wheel. In this simple configuration, the spring’s springrate and preload determine how much boost pressure the system will achieve. Springs are classified by the boost pressure, they typically achieve, such as a “7 psi spring” that will allow the turbocharger to reach equilibrium at approximately 7 psi (0.48 bar).
One primary problem of this system is the wastegate will start to open well before the actual desired boost pressure is achieved. This negatively affects the threshold of boost onset and also increases turbocharger lag. For instance, a spring rated at 7 psi may allow the wastegate to begin to (but not fully) open at as little as 3.5 psi (0.24 bar).
Achieving moderate boost levels consistently, is also troublesome with this configuration. At partial throttle, full boost may still be reached, making the vehicle difficult to control with precision. Electronic systems can allow the throttle to control the level of boost, so that only at full throttle will maximum boost levels be achieved, and intermediate levels of boost can be held consistently at partial throttle levels.
Also to be noted is the way in which boost control is achieved, depending on the type of wastegate used. Typically manual “bleed type” boost controllers are only used on swing type (single port) wastegate actuators. To increase boost, pressure is taken away from the actuator control line, therefore increasing boost. Dual port swing type wastegate actuators and external wastegates generally require electronic boost control, although adjustable boost control can also be achieved on both of these with an air pressure regulator (This is not the same as a bleed type boost controller though) To increase boost with an external or dual port wastegate, pressure is added to the top control port to increase boost. When boost control is not fitted, this control port is open to the atmosphere.
Thanks WiKi!
So for us, the installation was fairly straight forward, although the cabling was a little awkward to plumb in throughout the car. We ended up having to buy new looms of cable, fuse holders, relays for the ignition switching, crimps and lots of connectors. The installation took around 3 – 4 days to complete of which I did most of the wiring myself, in order that the boys could carry on with some of the more important jobs.
I had to install new 12V supplies for the gauges and the new water meth injection system. The most obvious place to draw the power was from the main fusebox inside the engine bay (next to the battery) This was only going to provide permanent supplies of which I subsequently installed an additional relay, for switching the system on with the ignition (otherwise the gauges would have been permanently powered up and would soon run down the battery)
Picture below shows where we tapped into an ignition feed near the manifold, this was a low current source but was just enough whack to drive the coil on the additional relay (shown in the picture above)
A local earth source was taken from the car’s chassis behind the dashboard, this minimised the number of cables to be brought through from the engine bay:
Pulling the cables through was quite awkward, the trick was to use some plastic copex that was routed through underneath the driver’s side of the dashboard, which poked through a plastic blanking plate that sat in between the cabin and the engine bay. Once installed, we could then pull everything through using a nylon draw tape (same tool used for pulling wires through conduit systems by electricians) tricks of the trade!
I used various crimps and connectors to ensure we had good solid electrical connections, the last thing you want is your gauges to conk out during mid race!
I’ve often had people teasing me about my slightly unorthodox way in wiring things up, perhaps an auto electrician would have something to say about my methods! But being an electrical engineer myself, the principals applied are the same when wiring things up safely, which is our main priority of course!
My advice is always to ensure you provide the appropriate fuses for every circuit, we don’t want fires!
The main wiring loom shown below was for the gauges and water meth system. All connections were properly marked from a labelling machine, which would make life a little easier for diagnosing any faults:
Continue to part 2...