<GB> wrote:good news the he emailed me then i rang him, he pulled off the exhaust and its started making power again its not the car but the rear section of the exhuast which are mrt ones from when the car was first built, with the rear section off it made 10kw more than when the had it at the same boost and the boost also came back up, fantasic result so far, once its boosted with a new system it should be good just hope its not too loud lol
Yeah thats not surprising, the MRT ones are 1&3/4inch after the Y split. They are a great street exhaust for mild power where noise is a concern but if your wanting to make big power then you have to go larger diameter.