1997 Skyline Gts25 Turbo Type M

[capitao]

Hi people,

I am new here and I m not from Australia. I am in Mozambique. I want to import from Japan a second hand gts25t. here are my questions:

-what is the max boost can i run with stock turbo?

-what are the best modifications for these car?

-how can i remove the speed limiter?

-i want to build a custom exhaust with twin tube. what size of tube i have to use?

what is the best turbo timer,mechanical boost controller,blow off valve,air filter for this car?

what are the advantages of mechanical boost controller?

is it possible to run on leaded fuel?

can i use UNICHIP piggyback computer?

what is the top speed and acceleration times in standard form?

what is the inlet size for air filter?

[siddr20]

what is the max boost can i run with stock turbo? 9psi.. I wouldnt be pushing it more than that, unless you have some cooling devices such as front mount..

what are the best modifications for these car? bascially all bolt on stuff, and anything else you would like your car to acheive!!! Set your goal, and search for what you want.. But i would get front mount, full exhaust, pod, stuctbraces, do cams, suspesions and the list goes on, dependin on how much money you have..

how can i remove the speed limiter? theres a bit of muckin around to do.. BUT, there is an article in the tut section, so search there.. Been nicly covered with all diagrams n such..

by tube you mean PIPE right???

For comparisions of mechanical and electrical, that thread has been covered numours amounts of time.. Just do a search and that goes for rest of your questions..

I have a feeling you will be first owner in Mozambique with a skyline??? Are they lots of workshops there that can help you install most of these parts and such??

ohh btw, i wouldnt run my skyline on normal leaded fuel.. It wasnt desgined for it... The car might sluggish with normal leaded fuel.. Use 98 octane!!! No point puttin all these mods on, if you fillin it with normal fuel..

Hope that helped a little. .If not.. ahh well.. hahah

[GTRgeoff]

-what is the max boost can i run with stock turbo?

it depends on the condition of the turbo and how well you care for it. I have seen 14psi used consistently for a long time without failure. Always warm up well or drive off easy and don't go hard for at least 5 min. Come in steady to where your journey finishes and then allow a short idle down of around 30 sec.

-what are the best modifications for these car?

In this order, full 3" exhaust, front mount intercooler, adjustable rising rate fuel reg/fuel pump(bosch 030/033)/powerfc computer, new turbo/injectors then upgrade to a GTR33

-how can i remove the speed limiter?

The powerfc will do this or an apexi RSM. there are other addons as well.

-i want to build a custom exhaust with twin tube. what size of tube i have to use?

try 2" for twin but there are so many 3" exhausts your should just buy second hand or get the car shipped with it.

what is the best turbo timer,mechanical boost controller,blow off valve,air filter for this car?

most timers are of a muchness, a basic bleed valve for mechanical or the aussie Jaycar electronic boost controller is about the best of all,BOV is a matter of preference but maybe GFB, Air filter I believe the apexi or blitz. There was a test done and one of these did really well.

what are the advantages of mechanical boost controller?

poorer than Jaycar but at least you can run a little extra boost.

is it possible to run on leaded fuel?

Not if you want your Oxygen Sensor to continue working.

can i use UNICHIP piggyback computer?

Yep

what is the top speed and acceleration times in standard form?

180 kmh limited or about 220 unlimited. 0-100kmh 6 seconds

what is the inlet size for air filter?

Around 70mm

As mentioned you should try to use a higher RON fuel such as 98 but with the PFC you can tune to run on any petrol fuel you desire.

Edited August 19, 2005 by GTRgeoff