Cheers and yes it surprises a lot on the road!!Just read this entire thread, what a beautiful piece of work, been a while since I seen one of these, stage 3 in that must be something else
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Ibiza Bocanegra - Venom K03 - Unicorn Tuned - Daily/Track Toy
- Thread starter BocaBill
- Start date
So, As mentioned in my last update..... larger injectors now installed and scaled to suit by Rick @ Unicorn once that was done it was onto tuning the top end.
This proved to be more complicated than first thought as we was plagued with a boost cut at around 6.2k, No error codes and no signs in the data to say what wasn't happy, all we knew was the power to the N75 would cut and engine would continue up the revs with just wastegate spring pressure.....so not ideal!
After some trial and error data logging testing different wastegate springs and preloads we found that although the ea111 twincharger doesn't have a MAF sensor instead uses 3 MAP sensors having more preload (than now set) or using a stronger spring was making enough boost to max out the engines air flow capacity to which the ECU's soft limp mode is to cut the N75, Took a lot of scratching heads and few weeks of back and forth but that's tuning I guess.
At this point I was no longer interested in hp figures I just wanted my setup to work correctlyand reliably, So once that was figured out the engine settled on the yellow 9psi spring in the forge actuator with 4 and half turns of preload, Actual Vs Requested match each other from a peak of 1.65bar @4K until actual falls off slightly from 5.5K upto and into the redline whilst still making 1.35bar but most importantly it holds boost to 7K with no cuts
Compromise is what's key when tuning most car's....on the forge blue spring (13psi) I have previously ran 1.7bar peak, holding 1.6 but had to heavily taper the boost off @ 5.4k down to 1.2bar to avoid the boost cut and to keep stock injector duty cycle in check which left the top end lacking in power, but now with the larger injectors I'm able to hold peak power from 5.4k upto redline instead of it falling off, I think we finished around 240hp/260ft lb....not massive numbers on paper but a completely different animal on the road
Considering at the time of this update it's the ONLY stock engine Bocanegra on a hybrid turbo to be actually Taxed, Running, Driving & being Abused on the UK roads 9& Circuits today.... plus I believe it's the only Bocanegra to be tuned by Rick also.
so a TRUE UNICORN in every sense of it's name and still a very quick and capable little motor!! Anglesey Track day booked, Cadwell and Oulton coming soon!!
7 year's of ownership this June from stock to now and still under 90K
This proved to be more complicated than first thought as we was plagued with a boost cut at around 6.2k, No error codes and no signs in the data to say what wasn't happy, all we knew was the power to the N75 would cut and engine would continue up the revs with just wastegate spring pressure.....so not ideal!
After some trial and error data logging testing different wastegate springs and preloads we found that although the ea111 twincharger doesn't have a MAF sensor instead uses 3 MAP sensors having more preload (than now set) or using a stronger spring was making enough boost to max out the engines air flow capacity to which the ECU's soft limp mode is to cut the N75, Took a lot of scratching heads and few weeks of back and forth but that's tuning I guess.
At this point I was no longer interested in hp figures I just wanted my setup to work correctlyand reliably, So once that was figured out the engine settled on the yellow 9psi spring in the forge actuator with 4 and half turns of preload, Actual Vs Requested match each other from a peak of 1.65bar @4K until actual falls off slightly from 5.5K upto and into the redline whilst still making 1.35bar but most importantly it holds boost to 7K with no cuts
Compromise is what's key when tuning most car's....on the forge blue spring (13psi) I have previously ran 1.7bar peak, holding 1.6 but had to heavily taper the boost off @ 5.4k down to 1.2bar to avoid the boost cut and to keep stock injector duty cycle in check which left the top end lacking in power, but now with the larger injectors I'm able to hold peak power from 5.4k upto redline instead of it falling off, I think we finished around 240hp/260ft lb....not massive numbers on paper but a completely different animal on the road
Considering at the time of this update it's the ONLY stock engine Bocanegra on a hybrid turbo to be actually Taxed, Running, Driving & being Abused on the UK roads 9& Circuits today.... plus I believe it's the only Bocanegra to be tuned by Rick also.
so a TRUE UNICORN in every sense of it's name and still a very quick and capable little motor!! Anglesey Track day booked, Cadwell and Oulton coming soon!!
7 year's of ownership this June from stock to now and still under 90K
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Made a new splitter from 12mm birch ply and a lick of exterior satin paint.....some proper down force going on now
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Anglesey Circuit - Trac Mon 
Car survived, tyre did not!!
Cadwell booked for next month
Car survived, tyre did not!!
Cadwell booked for next month
Little addition before Cadwell a week on Wednesday, Oil Temp Sensor and Prosport gauge, couldn't have odd gauges though so swapped out my Turbosmart boost gauge for matching Prosport 
I even put a oem 2 pin connector on the sensor for that...'Keep it Factory' look
FYI...Stock oil filter doesn't fit a standard sandwich plate
I even put a oem 2 pin connector on the sensor for that...'Keep it Factory' look
FYI...Stock oil filter doesn't fit a standard sandwich plate
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