Mods And Tuning.

[TMW-R34]

Hi all, hope you all had a good christmas.

recently put a new cat back exhaust on my r34 GTT and am wandering if it needs to be tuned up or anything like that, the car is pretty standard but i feel its using a little more fuel than it should.

Wanting to get a boost controller fitted but heard theyre quite pointless unless the ecu or power fc is upgraded or the old one remapped??? What psi can you run the rb25detneo at before things are needed to be upgraded??

Would love to get it up 350hp to 400hp but am not sure where to start???

In need of some new coilpacks, can you guys recomend any in particular, superspark, jjr, yellowjackets. Dont really want to be forking out $600

Any help will be great, thankyou.

[paulr33]

given your new my recommendation is to find your local club's chapter in perth and attend their club meetings

from there you can meet all the local guys and ask away and find a good suitable workshop

this will save dozens of wasted time, hours, pain and $$$ on crap mods etc

if you cant be bothered doing that, do a search on the tune up threads either in the forced induction section or how to

this type of thread comes up weekly and all the good info, pricing etc is in those threads

[l_uk3y]

Dont bother taking the car to get tuned at this stage. Your next step would be to look at intercooler, and the front half of the exhaust (dump pipe through to Cat convertor). Then look at an Engine management solution (including tuning) Is it manual or automatic? (I haven't had a lot to do with r34's but i believe the Auto transmissions have special circumstances when it comes to ECU changes??) Either way i'm sure somebody else will respond regarding that. (or search the site on the topic)

For boost control, I personally wouldn't bother at this stage (others will argue). Once you change the rest of exhaust and the cooler your boost will creep up not that far from the lower end of the safe limit of the turbo anyway.

For coilpacks. I personally recommend Splitfires. Solved all my missfiring dramas instantly. (never used any other aftermarket brand for compare though).

Cheers. Luke

[Benzino33]

+1 many threads here u can search on houw to mod the rb25det. theres also a turbo upgrade thread where u can compare wat mods got people wat power

[N I B]

When you do go for a Tune look at www.nistune.com.

Stay with Splitfire ,The others are causing so much trouble so go with the proven product but only when you get to that stage.

[TMW-R34]

Dont bother taking the car to get tuned at this stage. Your next step would be to look at intercooler, and the front half of the exhaust (dump pipe through to Cat convertor). Then look at an Engine management solution (including tuning) Is it manual or automatic? (I haven't had a lot to do with r34's but i believe the Auto transmissions have special circumstances when it comes to ECU changes??) Either way i'm sure somebody else will respond regarding that. (or search the site on the topic)

For boost control, I personally wouldn't bother at this stage (others will argue). Once you change the rest of exhaust and the cooler your boost will creep up not that far from the lower end of the safe limit of the turbo anyway.

For coilpacks. I personally recommend Splitfires. Solved all my missfiring dramas instantly. (never used any other aftermarket brand for compare though).

Cheers. Luke

Manual. Ive got 3 inch to the cat, a high flow cat and then 3 inch the rest of the way through and a high flow muffler. also have the apexi pod filter and after doing that the boost has stayed the exact same, i thought it may have creeped up a little but it hasnt done anything.

I think its only pulling around 5-7 psi not a lot, bit pissed off. How can i change that??

Thanks.

[OMGGTR]

without changing ur turbo rb20 actuator lol

[TMW-R34]

without changing ur turbo rb20 actuator lol

????

[l_uk3y]

Should notice it more after a decent front mount intercooler.

Also for your info regarding being pissed off about 5-7psi. When I got my power fc tuned I got some pre tune results on stock ecu. My 33 made about the same power on 8 psi as it did on 11 psi (except 8psi gave much more midrange power due to ecu). More boost isnt always more power if everything else isnt sorted. If its manual i'd look at a power fc. Although theres options galore these days. If you can make the same power on 9 psi as you can on 12. Go for it, things will last much longer.

Start at page 1 on Forced induction. Flick through the topics until you hit about page 20 or so. You should be able to find a few topics on most of your current questions + future questions there.

Cheers. Luke

[TMW-R34]

Should notice it more after a decent front mount intercooler.

Also for your info regarding being pissed off about 5-7psi. When I got my power fc tuned I got some pre tune results on stock ecu. My 33 made about the same power on 8 psi as it did on 11 psi (except 8psi gave much more midrange power due to ecu). More boost isnt always more power if everything else isnt sorted. If its manual i'd look at a power fc. Although theres options galore these days. If you can make the same power on 9 psi as you can on 12. Go for it, things will last much longer.

Start at page 1 on Forced induction. Flick through the topics until you hit about page 20 or so. You should be able to find a few topics on most of your current questions + future questions there.

Cheers. Luke

Thankyou.

[OMGGTR]

without changing ur turbo rb20 actuator lol

whoops i ment with the rb25 turbo if u put on the rb20 turbos actuator u can have 10psi insted of 7.. rb20 turbos stock boost is higher was half asleep when i wrote previously lol