What did engine tuner quote? Their a unichip dealer I think and their also close. Ap have worked on lots of big spec scoodys skylines and evos all good friendly guys to deal with. But best off getting a couple of quotes Though man
Is the engine standard man? I had a similar problem changed all the above Plus the plugs, removed the fuel rail to check for any deposits etc in the end a member on here suggested changing the water tempature sensor (the green ended one) That controls cold fueling. When I took it out it fell to...
Running a front mount should not cause the above issues you may notice a very slight increase in lag. The standard top mount is fine for the standard car/engine unless you plan on increasing the boost straight away I would suggest putting the money toward a good service especially if the car is...