Boosting R33 Gtst Questions

[baby34]

Hi, i went to my mechanic today so he can install my Turbotech boost controller.. He recons i need a gauge.. anyone know a cheap one i can get? and he also recons my Current Exhaust is too thin for my car to be boosted anymore (i want 11psi) do you guys recon my exhaust will be fine or i should get a new one..?

Thanks

[mad082]

what exhaust do you have? if it is stock then no, don't boost it anymore as it isn't going to be good for the turbo. it will keep in the heat and shorten the life of the turbo. you really need a 3" turbo back system.

as for gauges, just get a cheap $50 drift one

[Krishy]

what exhaust do you have? if it is stock then no, don't boost it anymore as it isn't going to be good for the turbo. it will keep in the heat and shorten the life of the turbo. you really need a 3" turbo back system.

as for gauges, just get a cheap $50 drift one

+1 to the exhaust question.....get a good aftermarket 3" turbo back and then you can run around 12 psi with a nice FMIC.....

Its never a good idea to boost it to 11psi with a stock as a rock setup mate.....installing a aftermarket exhaust and intercooler will let the boost creep up a bit anyway...from 7psi (stock) to about 9psi (ish)....i used my mates gauge (that read in PSI) to set it up and after about a week of not noticing any spikes i took it off and never had a problem...but in saying that get an EBC if you can

Edited July 21, 2009 by Krishy

[kay33]

hey mateee...

i was in the same position as you abotu a 2 years ago.. i started of with a3 inch turbo back exhaust.. that s very imporant to hav when boosting ur turbo, as it will definately help the turbo boost to 11psi. and ul also need a fmic. onyl thing is once u boost the car, u myt find ur car runnign rather sluggish.. i rememeber with my car, it kept jerking because the boost kept cutting out, due to the factory computer. and eventally the computer will reset.. sometimes my car woudl stall and turn off while i was driving. so becareful before u boost ur car.. ask ur mechanic about what i said b4 u boost it.. the onyl i fixed that probelm was i bought a greddy e-manage.. and tuned on the dyno n havent had a problem since. besides epa lol

[baby34]

far out forgot to say i yeah i got a 3 inch exhaust catback.. he said its ceramic.. and that it'll break if i boost it too much..he sed it can't handle more boost.. so i was wondering what would happen if i do boost it and leave the current exhaust? also my mufflers kicked in a bit. does this ruin performance? lol. Thanks for the replies

Edited July 21, 2009 by richar

[mr-r33]

if you boost it to much you will do this to your turbo....with the stock turbo i have been told 10psi is good but it safe up to 12psi

[mad082]

far out forgot to say i yeah i got a 3 inch exhaust catback.. he said its ceramic.. and that it'll break if i boost it too much..he sed it can't handle more boost.. so i was wondering what would happen if i do boost it and leave the current exhaust? also my mufflers kicked in a bit. does this ruin performance? lol. Thanks for the replies

get a 3" cat and a dump/front pipe as well. no point have a 3" exhaust if the first 1m of exhaust is still the tiny stock one.

i would also suggest a fmic for running the higher boost. it isn't so bad in winter, but come summer you want it because it will make a big difference to inlet temps if you drive it a bit hard. the stock cooler suffers from heat soak pretty quick.

[Krishy]

far out forgot to say i yeah i got a 3 inch exhaust catback.. he said its ceramic.. and that it'll break if i boost it too much..he sed it can't handle more boost.. so i was wondering what would happen if i do boost it and leave the current exhaust? also my mufflers kicked in a bit. does this ruin performance? lol. Thanks for the replies

if you boost it to much you will do this to your turbo....with the stock turbo i have been told 10psi is good but it safe up to 12psi

Get a dump/front pipe as well mate....just a cat back isnt really good enough when increasing boost....my mate has a R33 S2 and i have a S1....we had both on the dyno and running same boost i made a bit more power then him as he just had a catback.....Dents along the exhaust piping can make a bit of a difference but wont be getting worried about that just yet.....

You can boost the stock turbo up to 14psi but to be safe and if you want a longer lasting turbo run it at 12psi....I have been running 12psi for about a year now and its going strong....had it up to 14psi for a long time but thats before it got all tuned up and shit...on 14psi the boost was dying towards the end of my dyno graph but on 12psi it holds it strongly all throughout....

[mad082]

yeah i also ran 14/15psi for about a year without any issues. but you need an aftermarket ecu to go above about 12psi. and depending on how you drive, you might not want it that high anyway. especially if you want decent fuel economy. the higher boost you go, the worse your fuel economy gets

[shotter]

You may be able to run 12 - 14psi for years and not have any problems. In saying that you might break the exhaust wheel on the first day. If you want to keep the std turbo keep the boost at a safe level.

[baby34]

yeah. im keeping it at 11psi.. just to be ont he safe side.. what im worried about is my Ceramic exhaust, MY Mechanic is saying that i need a new 3 inch catback because my current ones really thin and if i boost my turbo to 11psi it will just break the exhaust? Whats your opinoion guys, thanks for the replies

[mad082]

he would be talking about the ceramic exhaust wheel on the turbo, which tend to fail when run at higher boost levels (although plenty have also failed at lower boost, so go figure). i have never heard of a ceramic exhaust. i have heard of ceramic coated exhaust though, and that is nothing to worry about running high boost through.

[Krishy]

yeah. im keeping it at 11psi.. just to be ont he safe side.. what im worried about is my Ceramic exhaust, MY Mechanic is saying that i need a new 3 inch catback because my current ones really thin and if i boost my turbo to 11psi it will just break the exhaust? Whats your opinoion guys, thanks for the replies

11 or 12 psi is no problems if you have the supporting mods for it. By supporting mods i mean turbo back exhaust, FMIC, coilpacks if possible and that should be no issues there...Cat back doesnt really help as its only flowing higher from cat back, but before the cat is where the action is so to speak.

[zebra]

No need for coil packs unless the standard ones are shot, plently of people have made 500+hp with the standard coils,

IMO dump/front pipes do stuff all with a standard turbo and ive got back to back time sheets to prove it

[baby34]

i think he meant my catback was too thin, and if i boost my turbo .. my 3"catback won't be able to handle it and it'll break my exhaust.. lets say if it does break.. would it just be my exhaust? or will it damage other parts aswell.. cos what im thinking is i may aswell keep my exhaust til it does break (if it does) rather than buying a new one.. and i dont have a fmic.. do you guys think i need it for 11psi?

[zebra]

Cat back too thin?? WTF is it made out of PVC pipe or somthing???

I think he is just trying to sell you an exhaust.

Post some pics up of it

[GT-RZ]

maybe you misunderstood him and he was saying your exhaust turbine is ceramic and if you boost it too much you may break it.... which makes sense.

because i don't think you have a ceramic exhaust and i don't think its too thin... unless you made it with coke cans

Really why run the risk with the turbo? it's not like you will ever get good performance out of the stocker without modifying it... Leave it stock to minimize the chance of turbine failure. If you want performance get it high flowed or a new turbo.

[mad082]

your exhaust shouldn't break from extra boost, unless maybe it is made out of a wet paper bag.

i would ask him what exactly he meant by your exhaust being too thin.

and while turbo back exhausts might not add much to how fast you run over the 1/4, they do help as far as turbo life goes. having a larger pipe allows the hot exhaust gases to move away from the turbo quicker, thus reducing the chances of turbo failure

[Krishy]

No need for coil packs unless the standard ones are shot, plently of people have made 500+hp with the standard coils,

IMO dump/front pipes do stuff all with a standard turbo and ive got back to back time sheets to prove it

I beg to differ

Me and my mate ran our 33's on the same dyno like 15 mins apart on there was a difference between mine and his and we have exactly the same mods except i have a full zorst and he had a 3" cat back....the difference was i made 180rwkw on 7psi and he made 173.5 on 7psi.....

Now that can be put to a few factors/variables ie motor life and how fresh it is etc etc...but i certainly felt a difference when i had my exhaust put on.....it sounds better at the same time flows a lot better too

[mad082]

7kw can easily be put down to motor variables, but could also be the front pipe as well. i didn't really notice any gain from putting mine on, but then i only put the dump pipe on there. the front pipe had been on there since before i bought the car (had a 3" front pipe and the rest of the exhaust was stock, LOL). it certainly isn't a "OMG that is so much more powerful" kind of mod.