serge1

Greetings all,

Anyone run 13 LBS of boost every day with power FC and Stock intercooler on stock twins?? If so. Did you
run into problem with the reliability of your engine or
turbo??

I just want to get some refference point. I am planning
to run .90 KG (13 psi ) with my power FC and stock
intercooler.

Thanks!

Flybye

I do, but my FD isnt my daily driver. Then again, when I DO drive her, I driver her hard, so it kinda makes up for her not being a daily driver

I've had it this way for the past 5k miles and 1.5 years or so.

matty

i am running .83-.93 wth stock ic and i havent had any problems.

Qball

how big of a difference is that in accel? im still running a stock 10 till redline and was just going to booost 12 as a daily. is 13 a big difference? can stock fuel etc handle 13?

i just got a ypipe, dp, intake.. was going to boost up to 12 when i got my mp and cb .. pfc

Jetlag

Yes, I did run it at 13 psi with stock i/c, Power FC, d/p, and a cat back. After I'd install the FMIC and Y-pipe, it was running about 14.5 to 15.5. I had no problems with my car. This does not mean that you will have the same result!

Now she's down for a heart transplant.

ŽÊhttp://homepage.mac.com/rotarydreams/

Flybye

See that's the thing. 14psi really becomes about the limit of the stock fuel system.

silver93

check Wade's site for good info on the limits of the stock fuel system.

Toadman

Good question! Is it that much of a kick in the *** to run 13psi occaisonally or daily even if modded to support it?
Is it like 10psi = ho hum this sux
13 psi = holy crap I gotta woodie!?

I'm setting my profec-b hi and lo boost settings and could use an opinion for around-town and performance settings.
All mods will support up to 13.5 psi, but no IC or upgraded injectors.

jd93rx7

I would recommend upgrading the ECU if you haven't done so already. I am running 13 lbs. with Pettit Racing Center Section, HKS Downpipe and Muffler. And intake.
I have not had one problem and it is my daily driver. Just beat a brand new Cobra last night

GoRacer

iTrader: (2)

lol - ToadMan, yeah high boost makes you want to hump the gas tank.

From what i've researched the stock IC is only made to keep the car safe at stock boost. You can get a Blitz SMIC for as little as $850 or used IC for less.

I run 14lbs daily, was running 12lbs but that extra 2psi is a HUGE difference. Yes zipping in between Hondas on the freeway onramp (like they are in reverse)gives me cheap thrills!

I have stock pre & main cats but have Greddy CB,Blitz intake, Fluidyne & Greddy SMIC, oh & Pettit ecu.

kwikrx7

The key in turning up the boost is tuning of your computer. You can't just bolt-on a bunch of mods, turn up the boost to 13-14 psi without having your computer tuned for it - there are guys that do this but they fall under the "idiot" category and have no idea how to mod a FD and wonder why they leaned out and need a new engine. I think the Pettit unlimited is good up to 15 psi with most of the bolt-ons and the M2 can be tuned for your mods. The Power FC is already tuned for 12 psi but if you plan on running the boost up to 14-15 you should be tuned to make sure you have enough fuel. A fuel pump should be one of your first fuel mods when modding and turning up the boost. The secondary injector deal is kind of wishy-washy - I don't think I've ever heard of a FD's motor blowing because of the stock injectors - there are guys running T78s on stock injectors even though they are maxed out at 100% easily. I think guys are more **** about the injectors but if you are past the 330 rwhp mark then it would be best to upgrade to aleast 1200cc injectors.

serge1

Nice post. Totally agree with that.

Serge

Badog

Yes

nocab72

Yes, there is a big difference between my low and high boost settings. .80 bar vs .95bar

The difference between getting walked on by a BPU Supra and walking on a BPU Supra. Totally opposite races due to boost level, just did it this weekend with a buddy. He was grinning ear to ear when he beat me the first race (I was running .80 bar). He must have felt all cocky and arrogant like those Supra owners feel, untouchable at times, the second race I think he about crapped his pants when I walked on him, then started making up random excuses on why his car wasn't running right...hehehe

K

redrotaryrock8

the only mods i have is a superdragger and an ACT street/strip clutch, but just today i recorded a boost reading of .85 which is around 13-14psi. once, i even recorded a reading of .93 which is way higher than 15psi (but this was on first gear). is this dangerous?

usually i see a .83-.73-.83 kg (12-10-12psi) pattern.

i am getting a hks intake and a downpipe with a powerfc next week, and i expect to see the boost go up even further. what can i do to keep my car from hitting boost peaks?

nocab72

PFC does a pretty good job of controlling boost.

BTW: (1kg/cm^2 = 14.22psi) so .93 kg/cm^2 = 13.22psi

K

to_slow

iTrader: (3)

I run 14 all day long .with no problems yet !

Flybye

You know, some of you are really starting to scare me. Since day one, with a gutted precat and a main cat, I was getting 13.5psi with the PFC. Even after I installed a MP, I was STILL getting 13.5 with it. I checked my O2 readings with a digital voltimeter (for whatever it may be worth) and I am cosistently at low .90s at 13psi. So I was like, ok, I'm running in the safe zone as far as fuel is concerned. I am FINALLY getting my Commander this week. I just started using the FD again, and I finally am getting it. Its a long story why I am getting it after 1.5 years of having the PFC .

Anyhow, even when I originally got my PFC, I constantly heard that it was Apexi mapped for about 13psi. I was at about 13.5, and my O2 readings were in the safe area, so I never bothered to think twice about it, but now, this thread has me thinking...... My engine has been as faithful as can be for over a year, and I still have a strong 18 thingys of Vacuum at idle. I guess I will FINALLY see what is up this week when I get the commander.

Someone tell me something to make me feel happy about this wierdness of my PFC

nocab72

FlyBye: Maybe your PFC is set on the high boost setting which would put you @ .90 or low .90s.

I don't remember your mods but .95 spikes wouldn't be uncommon if you have highflowing intake/dp/mp/exhaust.

Couple weeks ago I plugged my commander into a buddies PFC for about 3 minutes, just to set his boost to the high target setting of .90 instead of the low target setting of .80.

When you get your commander and plug it in, goto Settings-> Boost and immediately (ie before hitting the up or down arrows on the commander) look to see if the cursor is highlighting the 1 or the 2 boost setting. If it is on the 2, then somehow your PFC got set to the high (2) boost setting and that is how you have been running it the past 1.5yrs.

You shouldn't worry, if nothing else was changed on your PFC, you are probably running plenty rich as the basemap in the PFC is quite rich, probably in the mid 10:1 range. (at least this has been my experience with a the handful of 7's I've seen on the wideband with PFC's and basemap).

Feel better now?

K

Flybye

A litle

Thing is, I don't get 13.5 as a spike . It gets there and holds. It's consistent. Then again, I HAVE played around with the prespool flap. Before I had the PFC, I manually adjusted it just perfectly to the point where I don't overboost on the 1st turbo, and the 4500rpm transition is almost as smooth as silk.

At least I can sleep now

SilvioRX7

I run 15psi with stock twins and ic with AICs everyday for the past 2yrs and I've had no prob's