Why so laggy? help with log plz

[lqbweb]

This is an ASZ, with a GTB2056VK, Cupra IC, pipework, cupra air intake, etc.



Also, there seems to be some problems on controlling the boost up at 4000rpm. Maybe some adjustments on the VNT? Doing the test in VagCom, I get a difference of about 70mbar with the vanes open and close.

My EGT peak is about 795 °C, not so high....

 

[devonutopia]

It seems to be slightly underboosting early on, and slightly overboosting 3400-4000 revs. I can't say why though. The lag doesn't seem totally dreadful. It could be a mapping thing as its odd you get underboost then overboost. Usually its one not the other.

 

[lqbweb]

does it look fine the fueling to you? do you have other logs as a reference? I think it is like ~300rpm delayed.... it should max out at about 2300 imho.

 

[ryanp]

thats not really laggy, have injectors tested, you are at the max with those

 

[cruiserboy]

N75 MAP needs some tweaking to get better turbo pressure regulation. It's the reason why you overboost and then underboost at 4000 RPM.

As said by Ryan, you are almost maxing out your stock injectors so you should consider bigger nozzles and maybe another tuner as well because 38° duration at 4000rpm is more than 70mg/str and I really don't like rough tuning like those ones but that's maybe just me...

 

[faboka]

IQ diagnostic limits haven't been increased. Need some work on the N75 map like Cruiserboy says.

Doesn't look too bad to me. Seen much worse.