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
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 N75 would cut and engine would continue up the revs with just wastegate spring pressure.....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 but uses 3 MAP sensors having more preload 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 hp figures I just wanted my setup to work correctly, So once that was figured out we settled on the yellow 9psi spring in the forge actuator with 4 and half turns of preload, Actual Vs Requested match each other until around 5.5k and then actual falls off slightly upto and into the redline though I'm still making 1.35 bar @6.4k from 1.65bar @4K but most importantly it boosts to 7K with no cuts.
Compromise is what's key here.....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 which left the top end lacking in power, Less 1 side to increase the other!!, I think we finished around 240hp/260ft lb.
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 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 N75 would cut and engine would continue up the revs with just wastegate spring pressure.....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 but uses 3 MAP sensors having more preload 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 hp figures I just wanted my setup to work correctly, So once that was figured out we settled on the yellow 9psi spring in the forge actuator with 4 and half turns of preload, Actual Vs Requested match each other until around 5.5k and then actual falls off slightly upto and into the redline though I'm still making 1.35 bar @6.4k from 1.65bar @4K but most importantly it boosts to 7K with no cuts.
Compromise is what's key here.....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 which left the top end lacking in power, Less 1 side to increase the other!!, I think we finished around 240hp/260ft lb.
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 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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