100% daily driveable tune. Its just pushing the limits of the stock engine.
Stage 1.5 Tune Revision...
They say, a picture is worth a 1000 words:
![Text White Line Pattern Design]()
That is 4th gear at 23.5 psi max timing is set at 12.5 degrees at 7,000 RPM. Boost is still falling off a little, so we need to address that.
Yes, that is a very close 275 WHP in 4th gear, stock turbo.
Goals:
1. 280 WHP 300 WTQ
2. 30 MPG
3. 13.5 seconds in the 1/4 mile and 105-110 trap speed
4. Reliability better than stock
Hurdles we are going to have to overcome:
1. Head gaskets are going to be an issue so we are going to have to watch the cylinder pressures very close.
2. Rod bolts are an issue. We may have to limit the RPM to 6900 with this tune and the rev limiter will have to be smoothed before hitting hard limits.
3. Customer relations. A clear understanding will have to be in place that you are pushing the limits of the engine... it could end catastrophic for the engine.
For 2013 and up to June of 2014 customers, this tune will not be available to you. Sorry, we simply cannot rely on the possibility of the early build engines new or old internals inside of them.
Thanks,
John
That is 4th gear at 23.5 psi max timing is set at 12.5 degrees at 7,000 RPM. Boost is still falling off a little, so we need to address that.
Yes, that is a very close 275 WHP in 4th gear, stock turbo.
Goals:
1. 280 WHP 300 WTQ
2. 30 MPG
3. 13.5 seconds in the 1/4 mile and 105-110 trap speed
4. Reliability better than stock
Hurdles we are going to have to overcome:
1. Head gaskets are going to be an issue so we are going to have to watch the cylinder pressures very close.
2. Rod bolts are an issue. We may have to limit the RPM to 6900 with this tune and the rev limiter will have to be smoothed before hitting hard limits.
3. Customer relations. A clear understanding will have to be in place that you are pushing the limits of the engine... it could end catastrophic for the engine.
For 2013 and up to June of 2014 customers, this tune will not be available to you. Sorry, we simply cannot rely on the possibility of the early build engines new or old internals inside of them.
Thanks,
John
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This is a teaser, no need to post boost or AFR readings at this time.
We are working on the reliability big time. We have been able to address the LSPI issues very well and now that we are tuning for part throttle fueling, that will go a long way towards keeping the motor healthy under low throttle high boost applications. You would be surprised to see what the target AFR's are at 50% throttle and 18 psi of boost at 5k.
Cylinder pressure increase is going to come from cam timing and the added ignition timing. The turbine side has no impact on cylinder pressure. Max we have seen on the turbine side is 55 psi, which is running an undisclosed amount of boost at this time
Keeping the rev limit under 7k will be far from the limit of the engine. We have reved the stock engine out to 8200 RPM without any failure. Its the turbo running out of air that I am more concerned with over 7k RPM.
Thanks,
John
At this time, no. We have not seen any issues with the injectors.
Without giving to much information away. The fuel pump and injectors can be ran at a much higher pressure, giving additional flow via pressure. So, if we do start to run out... we can start turning up the pressure. Not only thing, but there is a ton of room (when talking miliseconds) for injector on and off time. From what I have been able configure, we can add another 22-28% on time with the injector at 7,000 RPM. Now, this is a very small increase in open time, but at 2600 psi you really don't need much.
Based on the fuel pump and the injectors, and proper tuning. My guess would be around 380 to 400 WHP would be where we start to run into flow issues with the injectors when ran at 2600-2800 psi of line pressure. There are a few other tricks you can do to get more out of the system, but I am not comfortable discussing this on an open forum. There is a reason our VW GDI pumps can deliver 700HP worth of fuel. We will be working on the GDI system for the 1.6 engine when we run out of fuel
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