Help Needed With Mods For My R32

[colesy_skyline r32]

Hey everyone i have a 4dr R32 RB20DET and want to have a go at giving it some big power as cheap as possible..

It currently has front mount, bov, turbo control and timer, 3 inch catback exhaust..

mainly looking at the engine mods for now.. getting coilovers this week

I only have about a grand at moment but want to know how much needed to spent over time to get what i'm after..

For now I want to put a bigger turbo on it but just one that will slot straight in with the least other work needed..

I know i can get rb25 turbo and put it straight on nothing else needed..

is there any other i can put on without needing external wastegate etc??

will give me much more power??

I am then going to put split fire coil packs in.. (much power difference putting these in?)

from there i want to get after market computer?? im guess power fc, get 900cc injectors or thereabouts, bigger fuel pump, bigger afm..

im hoping i can do all this for few more grand and hope ill be looking at about 350hp??

Let me know your thoughts..

And also if u have turbo u can sell me which will suit what im after..

[britz1]

Hey everyone i have a 4dr R32 RB20DET and want to have a go at giving it some big power as cheap as possible..

It currently has front mount, bov, turbo control and timer, 3 inch catback exhaust..

mainly looking at the engine mods for now.. getting coilovers this week

I only have about a grand at moment but want to know how much needed to spent over time to get what i'm after..

For now I want to put a bigger turbo on it but just one that will slot straight in with the least other work needed..

I know i can get rb25 turbo and put it straight on nothing else needed..

is there any other i can put on without needing external wastegate etc??

will give me much more power??

I am then going to put split fire coil packs in.. (much power difference putting these in?)

from there i want to get after market computer?? im guess power fc, get 900cc injectors or thereabouts, bigger fuel pump, bigger afm..

im hoping i can do all this for few more grand and hope ill be looking at about 350hp??

Let me know your thoughts..

And also if u have turbo u can sell me which will suit what im after..

mate i just put on a rb25 turbo on my 20 and a turbosmart fuel reg... btw i recomend the fuel reg upgrade it increces the torqe quite a bit and makes the engine run smoother... oh and a new fuel punp...500hp plus

make shure you get both the rb25 coolant lines for the turbo because the rb25 turbo has diferent size banjo bolts...

i think that with a tune i can make 170/ 180 rwkw at 12-13psi

oh and make shure you put the rb20 auctuator on the 25 turbo because of the 10 psi spring

[colesy_skyline r32]

thanks mate...

so u reckon the rb25 turbo is pretty good??

are there any other turbos that will go straight on like the rb25 in which i wont need external wastagate and dump pipe etc but can slot straight on and get more power than i would in a rb25 turbo??

im guessing high flow rb25 turbo will be a good option? anyone have any idea how much it is to get them high flowed?

[TiTAN]

Hey everyone i have a 4dr R32 RB20DET and want to have a go at giving it some big power as cheap as possible..

It currently has front mount, bov, turbo control and timer, 3 inch catback exhaust..

mainly looking at the engine mods for now.. getting coilovers this week

I only have about a grand at moment but want to know how much needed to spent over time to get what i'm after..

For now I want to put a bigger turbo on it but just one that will slot straight in with the least other work needed..

I know i can get rb25 turbo and put it straight on nothing else needed..

is there any other i can put on without needing external wastegate etc??

will give me much more power??

I am then going to put split fire coil packs in.. (much power difference putting these in?)

from there i want to get after market computer?? im guess power fc, get 900cc injectors or thereabouts, bigger fuel pump, bigger afm..

im hoping i can do all this for few more grand and hope ill be looking at about 350hp??

Let me know your thoughts..

And also if u have turbo u can sell me which will suit what im after..

Highflow RB25 turbo (hypergear?)

GTR/aftermarket fuel pump

GTR injectors + resistor pack

Remap the stock ecu or get nisstune

Z32 AFM

Turbo back exhaust

There is no point running 900cc injectors and a powerfc to make ~250kw if you want to do it on a budget.

[colesy_skyline r32]

Highflow RB25 turbo (hypergear?)

GTR/aftermarket fuel pump

GTR injectors + resistor pack

Remap the stock ecu or get nisstune

Z32 AFM

Turbo back exhaust

There is no point running 900cc injectors and a powerfc to make ~250kw if you want to do it on a budget.

thankyou...

so u think with all of that i should get 250rwkw/350hp??

what is the benefit of getting a nisstune over remap?? or getting power fc??

both the same or can power fc give u more??

cheers, ben

[Kwyjibo]

Probably worth looking at the dyno thread and thinking about this a bit. If its a street car you probably don't want to just get overall peak power as RB20's are very average down low.

I just put in an HKS2530 and it made less difference in response than my FMIC did(before something got in and chipped the comp wheel ) and I should be able to reach 220kw, the person who I am buying a powerFC from made 240 with one. This all without even getting a tune. As its a BB turbo you will notice a lot better response than with a RB25 high flow(unless you pick up a BB high flow which will cost more anyway), and you can pick up a second hand one in good condition for around $1500 these days. Don't worry about 900cc injectors especially if you are on a budget, get some GTR injectors, Z32 AFM and fuel pump, no need for FPR then either.

When I was first looking into modifying the car I was hoping for 250-270rwkw using a 3017r or something like that but then after looking around a lot you can see a massive difference in mid range using a smaller turbo which will probably end up making your car faster anyway(it will at least feel faster). If you want a driveable 250rwkw you'd have to start looking into chucking an RB25 engine in.

[colesy_skyline r32]

wats a bb?? and what is fpr? and did u say get fmic and without a tune makes good difference?

[TiTAN]

thankyou...

so u think with all of that i should get 250rwkw/350hp??

what is the benefit of getting a nisstune over remap?? or getting power fc??

both the same or can power fc give u more??

cheers, ben

That combo should get you about 240-250kw

nisstune gives you real time programing of the ecu, the remap has to be done and then the chip pulled out/put into the ecu each time a change is made.

the powerfc isn't going to give you any more or less power than what a properly setup remap or nisstune will.

[Kwyjibo]

Sorry BB means ball bearing and FPR means fuel pressure regulator.

Ball bearing turbos spin more easily so spool up earlier. Standard RB20 turbo is ball bearing however I understand RB25 turbos are not, at least the high flows that get put in them for cheap usually aren't.

Fuel pressure regulators are used when you want to get more fuel flow through smaller injectors, its not really an ideal solution though, GTR injectors can be had for cheap anyway.

If you are planning on running 10PSI+ boost through these bigger turbos I would recommend a FMIC however you might not see that much of a power difference through it. Again this will affect response even more hence why I would recommened a BB turbo of some type. Defintely get a tune with these modifications. If you want above 220rwkw you will need a Z32 AFM which will require a retune anyway.

I would recommend looking through some threads on here because there is a lot of opinion rather than fact(not saying mine is fact). Just asking in one thread is not going to get you an ideal solution. While I have been saving for each parts I have been looking over a lot of threads in this section and it has been a great help on deciding each of my parts. What I am doing is as follows.

Unopened RB20 engine(will upgrade to RB25 when it dies)

HKS2530 turbo, will now have a slightly bigger wheel due to mine being chipped

Split dump, 3" back exhaust(was already on car)

Z32 AFM(almost always needed for 210kw+)

GTR injectors/ballast resistor

Bosch 040 fuel pump

Adjustable cam gears

CoolingPro FMIC kit

Usual CAI/heatshielded Apexi pod setup

PowerFC

No Splitfire coilpacks as yet, car was running 15psi without misfire, going to run 18psi with the new turbo so will see if it is required.

All up would have been under $4200 for me if I didn't buy a dodge Z32 AFM or chipped the turbo wheel. The computer I'm buying has a tune for my exact mods, so will hopefully be able to get a cheap retune just to make sure everything is safe.

cheap usually aren't.

[RBLUV]

get a hks 2530, just put one on mine untuned and already the difference in response/power is unreal

[colesy_skyline r32]

get a hks 2530, just put one on mine untuned and already the difference in response/power is unreal

thanks mate.. easy to instal?

what exactly was needed to instal and how much all up did it cost??

All these comments are really helpful!! Thankyou guys

[Kwyjibo]

Really easy to install if you get a T3 flanged one. Just need to find a matching split dump pipe(one that doesn't have a bit sticking out between wastegate/exhaust). Most that are being sold come with lines, if not you will need new coolant/oil lines/oil feed. Each of the feeds are slightly smaller than on the standard turbo. For intake all I did was buy a silicon 90degree angle and put it on as an elbow and then extended the standard pipe slightly. The AFM piping connects straight up with no modification.

[femno]

The HKS2530 is pretty much a direct bolt-on. This turbo is extremely responsive, and gives you awesome midrange power. It can make up to about 220kw with one of these, although it will blow your budget at a touch over a grand. But its really worth the extra money.

Fitting a standard R33 turbo will limit you to 13psi as the ceramic wheels are at risk or exploding running anything more.

Fitting a fuel pressure regulator WILL NOT give you more torque. lol.

Splitfires wont give you more power, they are just the ideal replacements for faulty standard coilpacks.

Fit GTR injectors with a Bosch 040 fuel pump (closest to direct fit), they are a bolt-in item, but must be used with the GTR resistor pack (have a search for what that is).

A Nisstune will run the show beautifully and is very good value for money, pending you have a tuner that can install and tune this.

Adjustable cam gears are a MUST, gains of about 20kw in the midrange can be had by fitting and adjusting these.

[colesy_skyline r32]

The HKS2530 is pretty much a direct bolt-on. This turbo is extremely responsive, and gives you awesome midrange power. It can make up to about 220kw with one of these, although it will blow your budget at a touch over a grand. But its really worth the extra money.

Fitting a standard R33 turbo will limit you to 13psi as the ceramic wheels are at risk or exploding running anything more.

Fitting a fuel pressure regulator WILL NOT give you more torque. lol.

Splitfires wont give you more power, they are just the ideal replacements for faulty standard coilpacks.

Fit GTR injectors with a Bosch 040 fuel pump (closest to direct fit), they are a bolt-in item, but must be used with the GTR resistor pack (have a search for what that is).

A Nisstune will run the show beautifully and is very good value for money, pending you have a tuner that can install and tune this.

Adjustable cam gears are a MUST, gains of about 20kw in the midrange can be had by fitting and adjusting these.

So if i want to get more than 220rwkw (want to go to bit over 250rwkw) i cant get HKS2530?? or is that wat i should expect to easily make???

thanks for all of this..

are the cam gears easy to fit or would i need mechanic to do this?? any idea on average price they go for?

[Kwyjibo]

So if i want to get more than 220rwkw (want to go to bit over 250rwkw) i cant get HKS2530?? or is that wat i should expect to easily make???

thanks for all of this..

are the cam gears easy to fit or would i need mechanic to do this?? any idea on average price they go for?

Won't get over 250rwkw with a HKS2530, maybe 240 absolutely max if you get a newer one. You need to ask yourself whether you really need that power though. From my experience a 230kw car that pulls from 3000rpm is much more fun than a car with 250kw that doesn't start pulling till after 4000rpm and only gets 250 right at peak.

If you can change the timing belt you can change the cam gears, basically same process except you remove the gears.

Edited June 17, 2009 by Kwyjibo

[hypergear]

If you are serious of getting 250rwkws We can build you a ATR28G2 in .58 Rear housing in sleeve or Ball bearing depends on what you want to spend. That can produce upto 270rwkws with very driftable response. The max you can get out of a RB20det Turbo high flow is about 230rwkws with stockish response.

[Ehgriez]

Danny Vahoumis has done 230kw out of a 2510.

Food for thought.

[colesy_skyline r32]

I have been discussing with hyper gear and am going to get the highflow rb25 turbo.. (not bb)..

i then have been looking and will get gtr/bosch fuel pump, gtr injectors, Z32 AFM and will probably end up getting as nisstune.... think im looking at about $2600 if i get everything cheap enough as i have seen available..

would this be all i need to hit about the 230rwkw?? and will go good with boost about 3000rpm??

anything wrong with doing alll of this??

thanks guys for all the support

[Kwyjibo]

Should get 230rwkw easy. You might start to come onto boost a bit after then but not really sure when you will get full boost. Still should feel good to drive and its at a good price.

I have been discussing with hyper gear and am going to get the highflow rb25 turbo.. (not bb)..

i then have been looking and will get gtr/bosch fuel pump, gtr injectors, Z32 AFM and will probably end up getting as nisstune.... think im looking at about $2600 if i get everything cheap enough as i have seen available..

would this be all i need to hit about the 230rwkw?? and will go good with boost about 3000rpm??

anything wrong with doing alll of this??

thanks guys for all the support

[colesy_skyline r32]

awesome.. i decided on high flow r33 turbo.. as i cant find single hks 2530 turbo anywhere..

they all seem to be in twin packages for gtr skylines and i cant afford to buy 2 and sell the other one off...

am going to do turbo first.. then save up and get the rest...

also what about cam changes??

what is recommended for this? i know there are cheap ones on ebay for like $100 each then hks ones are $550 set or something like that.... are hks ones worthwhile??

will do everything together after i put turbo in n get tune..