holding back?

[darren1.8t]

hi guys my bora 115 tdi has been mapped but at 3000rpm it holds back? unless i feed the throttle? i put a new airflow on her and there are no fault codes now? also the turbo sounds very whistley if you no what i mean??? i cleaned the egr out and noticed the manifold was sooted up!! could it be that causing the holding back or could it be the turbo?

[sprout99]

it could be the map you got

[darren1.8t]

i did think that mate its a revo map my mate had it done? but the turbo sounds really loud?? but boosts fine?

[sprout99]

i did think that mate its a revo map my mate had it done? but the turbo sounds really loud?? but boosts fine?

mine had a map on when i bought it - lad said his 'mate' did it
it was ok-ish but not great. seemed to be a delayed power shunt when accelerating.

so did some logging on it - found out it was really bad so got it changed - boost was spiking and fuel was turned up across whole rev range to max.

now i run a very smooth upsolute map. Took 3 versions to get it how it is now. I don't like a massive kick of torque
prefer the more linear delivery

[Rhyso]

If your turbo is getting louder then it could be on its way out 

Get the TIP off and try and check for any play in the shaft.  Catch it now and you'll save yourself a couple hundred quid in rebuilding the turbo

Get the pipework checked out for boost leaks too; you might have a split which only opens up under full load

[darren1.8t]

cheers lads not sure what do do i have changed all the pipe work maybe the turbo its way?