Boosting To 11 Psi W/stock Smic And Stock Ecu..!

[myRB25DETT]

hi guys,

ok straight to the business, i have a full 3"stainless steel exhaust system with 3"high flow metal cat and 3"front/dump pipe, pod filter with pod box around it, and the rest of the car are stock as u can get, now i just bought a Greedy Profec b-spec II EBC, and a new boost meter/gauge, i went around and talking to a lot of tuners, and i get different feedback from each tuner, now i want ur feedback and advice, i want to set the boost to 11 Psi/pounds Hi-boost, now my worries are,:

1. i have been told to change my stock SMIC and stock ECU: are these necessary?? if not changing the following, would my engine get affected/damage?? or any damage at all may occur??

2. boost cuts?? at what rate??

i know someone that can remap a stock ECU to eliminate boost cuts but will cost me $$$xxx ...

some tuners suggests to wait until i get an aftermarket ECU and Tune it together with my Boost control..

the only reason why i want to do Boost COntrol first is that i already have the EBC itself lying around my room and wondering if i can install it first then ECU later...but just want to make sure i will be doing the right thing..

so is it safe and duable boosting with stock SMIC and stocK ECU to 11 Psi.?? what will be the problem may cause with these sort of set up??

please help...whats ur idea guys??

thanx for your help in advance..

[femno]

When upping the boost the air being pumped out of the turbo becomes hotter, as the turbo is working harder, so to counteract this a FMIC is highly recommended. It will also render you more power through cooler intake air temps, although the standard R34 unit is quite good already.

You dont need to tune the ECU at all, although more power could be had if you remapped it to suit the new exhaust and more boost. If you dont go above 11psi there will be no boost cut.

Also im surprised its not running close to 11psi already, your bigger exhaust should have done this for you.

[R33GOD]

i would have to say no. you could probably do it but it wont be safe. get a safc2 to be safer. there around $250 bux second hand.

Then you can boost to 12 psi cause you have a good ebc

[R31Nismoid]

I wouldnt be trying... sure you probably can... but the ECU is more than likely going to have a fit

[myRB25DETT]

When upping the boost the air being pumped out of the turbo becomes hotter, as the turbo is working harder, so to counteract this a FMIC is highly recommended. It will also render you more power through cooler intake air temps, although the standard R34 unit is quite good already.

You dont need to tune the ECU at all, although more power could be had if you remapped it to suit the new exhaust and more boost. If you dont go above 11psi there will be no boost cut.

Also im surprised its not running close to 11psi already, your bigger exhaust should have done this for you.

"Also im surprised its not running close to 11psi already, your bigger exhaust should have done this for you." <---im not quite sure what i am running at the moment on the dyno with the exhaust i have right now, but one tuner told me i should be running 10-11 Psi with the set up i have...

i guess i will just have to call off my tuning and dyno day next week if this is the case...whats a good FMIC for R34 GTT in a reasonable price?? my budget would be around $700-900..anyone can point me to the right direction??

[myRB25DETT]

I wouldnt be trying... sure you probably can... but the ECU is more than likely going to have a fit

thanx r31nismoid....i have no choice, but to pull out, is goin to be a smart move right now..ill just have to find my intercooler now...

[R33GOD]

theres nothing wrong with the stock intercooler. You should be more concerned about using the stock ecu on 11 psi. get a safc or power fc..

stock cooler will be fine for 200-210 rwk

[scotty014]

i wouldnt boost mine up any more than 11psi ive herd that the r34 turbo's cant handle as much because of the nylon wheel.

once i get the rest of my exhaust in ill have all the minor mods done and ill probably have my ebc set on about 9 or 10 psi when it is installed to be on the safe side. but thats just me im to scared, i dont want something to happen.

[myRB25DETT]

i wouldnt boost mine up any more than 11psi ive herd that the r34 turbo's cant handle as much because of the nylon wheel.

once i get the rest of my exhaust in ill have all the minor mods done and ill probably have my ebc set on about 9 or 10 psi when it is installed to be on the safe side. but thats just me im to scared, i dont want something to happen.

"i wouldnt boost mine up any more than 11psi ive herd that the r34 turbo's cant handle as much because of the nylon wheel." <---we are in the same boat scotty, this is why im here and getting more info about it...stock r34 gtt turbo cant go more than 12 PSi as the turbo itself is made out of ceramics which can easily break into pieces if boost too much..

"once i get the rest of my exhaust in ill have all the minor mods done and ill probably have my ebc set on about 9 or 10 psi when it is installed to be on the safe side. but thats just me im to scared, i dont want something to happen." <--- you are not alone, but this is the tricky part scotty, my car just recently been modified lightly, it used to be stock as a rock even my sound system still have the original cassette tape slot and a nissan brand on it, but anyhow,recently i slapped a full 3"stainless steel cat back exhaust custom made, 3" hi-flow metal cat, 3 inch front/dumb pipe as well all the way to turbo back, and running a POD filter with pod box around it, once u got this mods done (which obviously what i have now) you will notice a big difference to your car, response a lot quicker compare to stock and NOW YOU WILL BE RUNNING approximately 10 Psi maybe pushing to 11 Psi on a colder days..so basically i am actually running on a limit boost for my stock turbo now without the help of my EBC..

thats why im calling all the experience tuner who have done the same set up as mine ...

thanx scotty for ur help

[myRB25DETT]

theres nothing wrong with the stock intercooler. You should be more concerned about using the stock ecu on 11 psi. get a safc or power fc..

stock cooler will be fine for 200-210 rwk

"theres nothing wrong with the stock intercooler. You should be more concerned about using the stock ecu on 11 psi. get a safc or power fc." <-- this is where confusion comes along r33GOD, bcoz u r not the only person dat told me dat stock cooler should be fine and ECU needs changing first and some other ppl telling me the other way around..so dont really know what to do first..

base on my survey, 50% of the tuner that i have interviewed/enquired about my set-up, they said that Stock ECU should be fine when upping the boost to 11Psi, but the Stock cooler has to be replaced first, as they will not goin to handle the heat very well after 2-3 runs on the dyno and will lose power after few runs and caused a lot of issues, base on their experienced(as what they told me)..they are reputable tuners though these guys..so really dnt knw yet..but im leaning towards on getting a bigger cooler to be safe i guess..unless someone can prove me wrong...

[SXC-R34]

Ok talking from experience, I ran 11 PSI on stock ECU and SMIC, well stock everything except a 3 inch cat back. I ran that way for a good 8 months, mind you it's my everyday car and I drive alot, and my foot is heavy on the accelerator, until I had a bit of funds and I bought a K & N pod ( $70 ), and a a FMIC ($ 350-380) from ROCKET Industries in Sydney and istalled them myself. After that the car ran good for another 3-4 months until 1 day I blew my turbo. Now by the time I blew my turbo the car had already done around the 100,000 KM mark, which is known that the ceramic turbo will F**k up sometime around the 100k mark. I'll leave the rest up to you to decide. Good Luck.

Personally I'de go for it with no probs, a lot of mechanics tell you to install an ECU or A FMIC yeah thats right they will tell you that cause if you do that, they'll make $$$ of you.

Get the idea

[Adriano]

It is the boost that kills the turbo, not 100,000km, htere are heaps of stockers with more than double that on the original turbo. I would just get the stock ecu remapped(toshi?) leave the boost, stock intercooler. you could sell the boost controller as you wont reallly be able to use it. Just the ecu will gain you more power than the boost/exhaust, as the r34 ecu's have a fit even with just an exhaust.

[paulr33]

agree with adriano. boost kills the turbocharger. excessive shaft speed, stress, heat are the main killers in a turbochargers death.

my standard turbo has 210,000kms on it and still goes well

[SXC-R34]

Well there you go I guess some people know better, and it is more boost that killed my turbo in the end But newayz it was a good excuse for me do modify my car lol

[Basti]

"theres nothing wrong with the stock intercooler. You should be more concerned about using the stock ecu on 11 psi. get a safc or power fc." <-- this is where confusion comes along r33GOD, bcoz u r not the only person dat told me dat stock cooler should be fine and ECU needs changing first and some other ppl telling me the other way around..so dont really know what to do first..

base on my survey, 50% of the tuner that i have interviewed/enquired about my set-up, they said that Stock ECU should be fine when upping the boost to 11Psi, but the Stock cooler has to be replaced first, as they will not goin to handle the heat very well after 2-3 runs on the dyno and will lose power after few runs and caused a lot of issues, base on their experienced(as what they told me)..they are reputable tuners though these guys..so really dnt knw yet..but im leaning towards on getting a bigger cooler to be safe i guess..unless someone can prove me wrong...

fyi, the r34 smic is an upgrade for us r33 folk. im running 10psi (rb20 actuator controlled) on full 3" zorst, metal cat, r34 smic, pod (wank) and standard ecu. 11psi is "safe" in my opinion. my car has been in this state of tune for atleast the last year, and i have a heavy foot. no issues

remember, the dyno is not 100% accurate to road conditions. the airflow especially mainly caters for those with FMIC (big fan pointed at the front bar) but doesnt look like it gets much air to the side mounts. keep the EBC. if you plan on modding further it will come in handy

[myRB25DETT]

fyi, the r34 smic is an upgrade for us r33 folk. im running 10psi (rb20 actuator controlled) on full 3" zorst, metal cat, r34 smic, pod (wank) and standard ecu. 11psi is "safe" in my opinion. my car has been in this state of tune for atleast the last year, and i have a heavy foot. no issues

remember, the dyno is not 100% accurate to road conditions. the airflow especially mainly caters for those with FMIC (big fan pointed at the front bar) but doesnt look like it gets much air to the side mounts. keep the EBC. if you plan on modding further it will come in handy...

basti, are u running a stock turbo as well?? any issues on the turbo tho?? the whole story why i have this topic is, i wanted to install my EBC and set it up to 11 psi with the stock turbo, stock smic and stock ecu..

im just worried if im goin to run into any problem in the future if i install the EBC ...

does anyone agree with me here tho, if its worth installing the EBC now, with Stock SMIC, stock turbo and stock ECU??

if not, ill just have to install my boost gauge first instead and wait for your opinions which is a better way...

[Adriano]

Why do you want the ebc when you are already running 11 psi?

[Basti]

standard turbo. no issues as far as i can tell (admitedly my abilities in this regard are limited). you wont have any problems down the track because of your EBC. if you are only using it to control your boost to 11psi, your stock ecu will be able to handle the change and run the car properly. even if you go to a new ecu, you'll still be able to use the ebc in conjunction.

as long as you take care of the car, you'll be fine. 11psi is not such a huge stress on these engines.

[myRB25DETT]

Why do you want the ebc when you are already running 11 psi?

im not quite sure if i am actually runnig 11 psi right now..ill have to dyno my car yet...i wanted the ebc bcoz i want to control how and when the boost should be high and low, thats why...i didnt want to run more dan 11 psi all the time...

[myRB25DETT]

standard turbo. no issues as far as i can tell (admitedly my abilities in this regard are limited). you wont have any problems down the track because of your EBC. if you are only using it to control your boost to 11psi, your stock ecu will be able to handle the change and run the car properly. even if you go to a new ecu, you'll still be able to use the ebc in conjunction.

as long as you take care of the car, you'll be fine. 11psi is not such a huge stress on these engines.

you got me right there basti, i only wanted the EBC install so i can control the boost thats all...its sound so good when hearing those advice from you...

does anyone agree here tho from basti's comments??