Quote:
Originally Posted by totalguy
yes it is dyno tested on an eddy current braked dyno
it would need a hybrid turbo, why does everyone go straight for boost? doesn't necessarily need to have a stupid high boost. i was only on 26 psi with what I got.
its all about egt's and soi and a bit of afr you watch the egt's if its going too high its too much
you dont need massive smoke to gain power if you get the SOI right massive smoke is for amateur tuning just dump in fuel to get power anyone can do that and its not the right way to do it.
any tuner who promises certain figures isnt worth using. its always estimated and dependant on the health of the vehicle.
drag strip cars are different they're tuned for the drag strip specific parameters that are used to optimize them for 1/4 mile runs completely different to something you would use on the road you're not just doing 1/4 miles all the time ffs!
do you even know what fuel pump this has and do you know what injectors are capable of? do you know whats inside the block? have you ever had one of these cars on the dyno on a long session?
i know all of it because the tuner has told me and based on that and other factors says the figures i mentioned are certainly achievable.
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Ah a lingo dropper
Offcourse you can advance the injection to lower egt, question is which egt? The egt measured right outside the block? or the egt right above the piston where no sensor is located?
The reason it lowers egt outside the block is that the burning can get more expansion because its injected earlier
BUT the starting temperature right above the piston where that extra fuel nearer to the piston crown is injected will be much higher (and you cant see it on a sensor) can result in burning a hole in the piston crown if you take it to far.
So there will be limits ,also pistons can crack with shrinking and expansion of the metal if there is much heat load difference (full blast away ..... and idling next stoppinglight)
(Hope you have AWD because 300 hp on the front wheels will let you stand still smoking the tyres)
And the smoothness off the burning will vanish ,very hard knocking vibration with injection timing advanced to the max
https://forums.tdiclub.com/index.php...piston.313658/
tdi engine cracked piston: 1.9l 220hp and brisk driving
https://www.coloradofans.com/threads...n-hole.406995/
piston hole: soi advanced beyond the max with ford duramax and bearing damage