What Can I Expect From My List Of Mods I Am About To Put On?

[TUF250]

Hi,

I have bought myself a r33 gts-t turbo manual with only 86,000ks. The car is immaculate, its my first turbo car and my first nissan and I must say I have fallen in love with it.

The car is currently stock and has a pod filter (no box), cat back exhaust (appears to be good quality, 3inch stainless with two large mufflers, fairly quiet)

I have done a service on it myself, cleaned the afm, new engine oil, diff oil, gearbox oil and new platinum plugs. it is going in this week for a timing belt and water pump. Oh the other mod is a big alloy radiator...

anyway now that the car is all serviced up I want to start modifying it for a little more power.

My goal here is to make it as responsive as possible while keeping as much power in the usable street range as possible.

This is what I had in mind, was keen to see what people though, what I havnt thought of and what they think the gains will be? not just from a power point of view but an on road feel.

I have got most of these parts, just waiting on the cooler and then a day off to fit it all at once.

- Return flow intercooler (to keep it legal)

- re-fit stock airbox

- fit a BMC panel filter

- make a scoop to direct air up into the snorkle

This will be stage one. what should I get out of this?

stage two will be

- fit a 3inch dump pipe

- replace rear muffler with a cannon or something similar for a little better note as it is too quiet

At this point will I need a full tune or should the computer adjust for it accordingly?

If I am not happy with it still I will have the boost pressure increased to 10ish or more if required but will be mindful of the stock turbo.

Look forward to peoples input

Thanks

Jason

[Lukas 33]

  TUF250 said:

Hi,

I have bought myself a r33 gts-t turbo manual with only 86,000ks. The car is immaculate, its my first turbo car and my first nissan and I must say I have fallen in love with it.

The car is currently stock and has a pod filter (no box), cat back exhaust (appears to be good quality, 3inch stainless with two large mufflers, fairly quiet)

I have done a service on it myself, cleaned the afm, new engine oil, diff oil, gearbox oil and new platinum plugs. it is going in this week for a timing belt and water pump. Oh the other mod is a big alloy radiator...

anyway now that the car is all serviced up I want to start modifying it for a little more power.

My goal here is to make it as responsive as possible while keeping as much power in the usable street range as possible.

This is what I had in mind, was keen to see what people though, what I havnt thought of and what they think the gains will be? not just from a power point of view but an on road feel.

I have got most of these parts, just waiting on the cooler and then a day off to fit it all at once.

- Return flow intercooler (to keep it legal)

- re-fit stock airbox

- fit a BMC panel filter

- make a scoop to direct air up into the snorkle

This will be stage one. what should I get out of this?

stage two will be

- fit a 3inch dump pipe

- replace rear muffler with a cannon or something similar for a little better note as it is too quiet

At this point will I need a full tune or should the computer adjust for it accordingly?

If I am not happy with it still I will have the boost pressure increased to 10ish or more if required but will be mindful of the stock turbo.

Look forward to peoples input

Thanks

Jason

A lot of people will probably bitch and whine and complain that you haven't done a search

As a rule of thumb, if you search for something and can't find it, you're not looking hard enough haha

You will not NEED to get a tune with the stuff you have listed. a) Unless your ECU is something other than stock, you can not tune it and b) Those mods wont be pushing the boundaries too badly.

However as you increase the boost and therefore increase the airflow you can hit R & R. If you don't know what it is, searchy search

Personally, I would not just do a 3" dump pipe and then change the cannon, If you are going to go to the trouble of fitting a 3" dump you may as well fit a full 3" system

Other than that I think you are on track for some good starting mods better outflow of exhaust gas, better intake of clean air, cooler charged air at TB and a little more boost. In the eyes of response though, the big front mount will increase the lag, but if you are going to up the boost a little more then there should be a fair trade off. If you want a tiny bit more boost without spending big money you can look in the DIY section for "hi boost mode" or something like that using the stock boost solenoid. Or you can get an rb20 actuator.

That should keep you happy for a while.........until your new found addiction strikes again

[bloodsword27]

straight through exhaust FTW

pretty sure changing to a cannon wont do much other than empty your wallet. put it somewhere more worthwhile like a piggyback ecu at the least if you're not going to get a full standalone.

[tridentt150v]

i reckon around 10 extra rwkw, if you do as blood suggests and get an ecu then 20 or so. I personally wouldn't waste my $$$ on a safc2 or anything if you intend modding because you will quickly reach its limits. Bite the bullet and go a complete ecu right from the start, you will never look back. And forget the zorst for now, what you have sounds more than up to the task, put your $$$ where you will get the best bang for bucks.

[toffy]

you sound pretty on track with where your headed imo , when you get the dump/front pipe , get a high flow cat converter , is your exh a 3in? . The bigger intercooler won't cause any noticable lag (if any , the dump/front pipe will bring boost on earlier which will bring it back to stock or better responce anyway) . Make sure your fuel pump is healthy (or just buy a new one if it hasn't been replaced , prefferably bosh 040/044) , block the stock boost controller off and get one of the cheap t piece ones that are all over this site , set it to 8psi for now , buy yourself a power fc if you can afford it or an safc will do for now and GET IT TUNED , imo best bang for buck mod is a decent tuner @ $500~

p.s another thing that may help is replacing the oxy sensor and water temp sensor , both are servicable items but i never hear of people replacing them! (and fuel filter when you do the fuel pump)

Edited May 26, 2010 by toffy

[TUF250]

good info. yeah it is a 3inch system and i think it has a high flow cat but i will check it when i put the dump pipe in.

Will I cause any harm if i run the car with the cooler, full exhaust and stock boost? will it cause problematic AFRs?

I will get it tuned but I just want to make sure I get all the mods I want done first.

Definately will change those sensors too. thanks for the tip!

[wlspn]

You won't cause any harm as the stock ECU with those mods will run rich not lean.

Unsure why everyone is suggestinng SAFC. For a tiny bit extra I would go a Nistune. Full retunable ECU so will get you more gain now & you won't have to upgrade again l.aterif you add more mods...

[wlspn]

Only thing is, with the Nistune you will need to use a Z32 ECU to keep VCT... Still worth it.

[TUF250]

so if i put these mods on it will run ricjer not leaner? i know they run rich from the factory so i thought with the extra cooling ability and therefore denser intake charge it would balance the AFRs out a bit more.

picking up the cooler tonight. very large return flow cooler. I got myself a stock airbox with snorkle which I will put back in at the same time. hoping for good results!

next will be the dump pipe to match the rest of the exhaust.

I had the timing belt done yesterday and asked the guys to check out my exhaust. they said the cat is xforce (any good?) and that the exhaust is a 3inch mandral stainless but has twin pipes inside the mufflers which can be a bit of a restriction. probably not enough to worry about with what I am chasing (approx 200rwkw with the stock turbo)

[KiwiRS4T]

The mods you plan are fine but note

1. You won't need a "full tune" which is just as well because there is no way of tuning your motor.

2. It won't go much faster until you up the boost to 10 -12 psi (cheap T as suggested - bypass the solenoid altogether don't stuff around with earthing it).

3. When you want to tune it a Nistune chip in a Z32 ecu or whatever it takes to retain your vct is the best and most cost efective way to go.

4. Spend some time reading on this website - there is a ton of information on how to make your car go and stop and handle better.