Yeah that plennum was on the car as ibrought it only had the car for 6 months so just tidying it up at the moment, new oil in everything, how much is a good plennum worth with the front inlet, i gather this was cut and welded, but the car runs fine, is this a beter setup from the stock one because it does not go over the top of the motor wich would heat the air from the cooler or was it done so the gt 30-40 monster coud be fitted ? its running 12 psi now making 205 kwatw is this a good figure for running 12 psi? should i be aiming for 250kw tune with around 15-18 psi, also im goin to get a duel stage boost controller so i can switch between 12 psi and what ever the new psi i will be running, joey joe how would this setup lean out cly 6 ? i have taken all the plugs out and checked them all , all same colour coffie brown on the electrode and black outer so i guess all the cylinders are getting same fuel air ratio............... is ther a way you can tell if the last cylinder is running leaner? , Rolls my motor is running richer at top end know this cause she blows plenty black smoke on full boost , so your saying some tunners tune learner to get the power at top end should it be blowing black smoke when on full boost this is ok right?