Baz82

The engine is a forged 2.5 running a VF48 at the moment 740cc injectors, Harvey tubular headers and up pipe, full 3" decat exhaust. 1.2-1.25bar boost.Autronic ECU

Bob Rawle

Graphs not very pretty lots to be improved, why such low boost you can run about 1.6 bar mid range on the VF48 which would get you a nice 400 ft lbs.
The early spike looks to be due to the afr spike as boost is not contributing.

Are you running a top mount or front mount intercooler.

Boost dropping to 1 bar is typical for the VF48 on a 2.5 litre the turbo cannot keep up with the engines air flow demand.

cheers

bob

Baz82

When I was getting the car road mapped I was happy to leave the boost at that level as the car felt good to drive also still running a 5 speed.

Using a front mounted Intercooler at the minute.What do you mean by spike in afr?Where the torque spikes at roughly 3k rpm and the afr goes rich from 11.5 to 11??