Hey guys I'm a newly owner of a r34 gtt skyline. It's fairly stock besides the pod filter, after market exhaust and boost controller. I'm looking to get more hp/kw on a tight budget, what are some cheap/effective upgrades I can do to it without cutting corners? When I got the boost controller out on the high performance mechanic said my car lacked pressure and to upgrade the fuel pump. Is this a wise upgrade? And roughly the hp ill gain? I have a lot of questions considering I'm new to the whole tuning process