common now, any owner of even a near stock skyline gtst should know that 180km/hr comes on in a fair hurry considering
. To try and help the original post by JonB here goes. :karate: Sorry its long just trying to help out
Exhaust is a must, a nice Jap-Spec 3inch system with HFlw cat and dump pipe will bring another 20kw to the party with around an hours work. Essential for any other stuff as well. Its your first step to increased cheap power on a factory skewie. WHen i first purchased my car it was fitted with a momo 3inch system (dump pipe all the way back) and other than that sweet *@#$ all else. It smashed 180km/hr no probs at all, with the spped limiter removed we cranked her all the way to 230km/hr on a 3k stretch.
My experiance with bleed valves and skylines are all pretty much negative. Like >>> i found that even installed with the bleed valve running back to the actuator, boost increase was very very small, spike was hard to control even after trying several different restrictors. Most importantly the power of the car (esspecially under spool) was decreased noticably.
Air pod filters are great budget upgrades for any car, skylines in particular because the airflow meter reads directly behind the air box mount. Fitting a nice high flow, smooth flowing pod filter means more airflow, at a smoother rate giving a better read accross the airflow meter. Power increases may not be overly noticable, but fuel efficiency and engine response are increased quite nicely (especially after factory ecu reset to take advantage of higher flow). Also quality pods have an unbvelievable induction roar that bring a smile to my face every time (i run a Blitz type LM it sounds like a jet turbine sucking under heavy spool)
Regards to factory turbo durability?, there is no durability really over 12psi or so according to everyone i have ever met. SOme get lucky but most dont. A cheap option is a high flow rebuild, as little as $1200 if you shop round and do fitting yourself.
Call me old fassioned but i think actuating the boost should be left the professionals. I have just got my car back from Advan, the Trust Solenoid Type S boost controller they have installed in conjuction with other mods is putting out a dyno proven 247rwkw at only 14psi. Its safe, reliable and feels very strong. Money well spent in my opinion.
Hope some of this dribble helps out
