Hi
I have a 2015 r35 gtr
I've had a few mods on it done by jim at Croydon racing developments
It's got croydons own y-pipe and Cobb access port v3 with tcm
I'm looking else where because I feel like I'm getting the runaround and being overcharged
I want to put a turbo back exhaust preferably 4 inch and also a retune using Cobb
I'll also need advice about fuel pumps, injectors, spark plugs and cold air intakes
Thanks for looking