Jump to content
SAU Community

Recommended Posts

  • Replies 63
  • Created
  • Last Reply

Top Posters In This Topic

I can see how the novelty of being able to dial up boost would ware off very quickly. This would also save me $$ to spend on other things.

Say i buy the PFC without the boost solenoid then tune it to a "safe" PSI. What would be a "safe" level for my car as i have done no engine work. only FMIC, ZORST, POD FILTER. I've found 12PSI to be the most common answer but then occasionaly 14-15. Does anyone else with similar mods run the higher boost???

Ive got the PFC boost controller with 3 boost settings. On hot days i change to a softer boost setting. On cool days or when im out cruising with the boys, i select high which is 20psi. Ive got a an aggressive tune so with high boost i do see some knock (60+). On a hot day i would certainly hate to select high boost.

As far as in gear boosts variations, this would be a handy feature to some high powered cars. With my old 255/40/17 Sumo's this would have been nice in the first 2 gears. But i bought some Street R compound tyres and now i get full traction in any gear.

My 2 cents worth.

if you (or anyone) was able to get their airtemp sensor working you can use the air temp vs boost correction table in the powerfc, you can see these settings via datalogit. in fact theres a few tables for boost correction that you can't see on the hand controller which datalogit shows you. such a shame we cant get the airtemp working

please tell me who has it working on rb25det powerfc

I was referring to the rb20det pfc, as it uses the r32/r33 GTR power fc (just remapped by AP engineering) That is why it displays the air temp on the rb20 hc still.

I dont know if the rb25det displayes air temp on the hc, as i dont have a rb25 pfc.

Obviously the rb25 uses its own pfc version, not a remappped gtr item, so it wont have this option available.....

hey sorry, i knew rb20 has sensor display and works if you plug it onto the ecu. the rb25 ecu has this menu item as well, and all the tables and it just displays airtemp as ---. i tried to hook it up and fried my ecu doing it so thats why i was keen to hear from someone who has done it on rb25.

Ive got the PFC boost controller with 3 boost settings.  On hot days i change to a softer boost setting.  On cool days or when im out cruising with the boys, i select high which is 20psi.  Ive got a an aggressive tune so with high boost i do see some knock (60+).  On a hot day i would certainly hate to select high boost.

As far as in gear boosts variations, this would be a handy feature to some high powered cars.  With my old 255/40/17 Sumo's this would have been nice in the first 2 gears.  But i bought some Street R compound tyres and now i get full traction in any gear. 

My 2 cents worth.

Should i assume that uve done engine work to be running 20PSI?? that sounds like pain for stock internals. I would only look to have 2 boost settings if i set this up. id prob want 9PSI as low boost and 12PSI for high. i'd be too worried about doing damage if i went higher than 12.

Edited by GTS4dood

i believe this thread should be kept open for general apexi powerfc chit chat as there seems to be enough to warrant its own thread.

ive just noticed that nengun has listed the mainstream powerfc pro as discontinued and only ap engineering customers have acccess to pro options

> Please note: Recently Apexi have stopped producing a number of Pro Spec > PFC`s and H/Cs. Please do not purchase a Discontinued Product.

standard rb25det powerfc pro is no longer available, like the others

Anyone know how to brighten the lights up on it?  In the day light its very hard to read.

dont leave it in the sun, the screen will fade and just get worse, put it somwhere where a shadow casts on the screen

OK, there seems to be a fair few ppl out there that have the Power FC installed. Ive read a FAQ on here that the avg price for tuning is 300-500. im gettin quoted from 450-700. I live in newcastle. so im willing to go to sydney for example to get it tuned if someone can recommend a quality tuner at a good price. a 4wd dyno would be good too. but i can switch it to RWD. would there be much of a difference in the overall tuning???

most tuners are telling me to get a seperate boost controller i.e. AVC-R. im almost being warned off the boost controller kits that apexi make as an add-on for the power fc. why would this be as ive had ppl on this thread say that they are fine?

the apexi powerfc boost contorller kit is fine and works fine.

ive heard mixed reports about the avc-r. the avc-r is very expensive. the powerfc kit is half the cost and gives the same functionality.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Similar Content

  • Latest Posts

    • I get that taking off the head is best but that's a bit much for "just" valve seals. I was just under the impression that one would be able to rotate to TDC and be able to temporarily drop the valve without losing it and effectively having to remove the head to then recover it. I never knew people actually pushed rope into the cylinder to do valve seals hahaha So just to confirm, just going to TDC will not work? In that case I know when I do valve seals I'll maybe just remove the head and do some other things while I'm there, or just wait until I do an engine build.
    • The old approach was to fill the cylinder/chamber with a length of rope pushed in through the sparkplug hole. The new approach is to connect compressed air to the sparkplug hole and fill it with enough pressure to push the valves up. Doing either of these things with the head on and the engine in the car is a lot less pleasant than doing it properly.
    • Can't you put the pistons to TDC and then do the valve seals? Or will the drop down too far to pull them back up?
    • One thing I can tell you is, do it properly the first time. If you encounter unexpected problems just let the car sit for a week or two if you have to get some other parts or figure stuff out.  I'd have said go and use as many OEM parts as possible but since you want to change the turbo later on a custom kit is probably the better choice. Since I have no experience with RB25 just compare parts diagrams and images before buying a line kit and it should be easy to see if it has everything you need. Amayama has very good parts diagrams and part number lists, that is what I used a bunch to figure out what I might need. And don't forget to plan ahead and possibly renew other stuff that's easy to get to while you're in there doing the turbo lines. Happy wrenching
    • Update 4:   Hi all, good news. Engine is running and all the gaskets and seals seem to be working as intended. No leaks so far, even the JB Weld seems to hold. I flushed out the old coolant a few times and put in fresh coolant, not Nissan stuff, I decided to try the Ravenol Protect FL22, they claim it works for a wide variety of JDM cars and the opinions on it by some people were pretty good. And it has the nice poison green color! And man am I glad I bought a coolant system tester earlier this year, vacuum filling works wonders on this engine. I can definitely recommend this to anyone still doing it the old school way. All you need is compressed air supply. Will have to do a small test drive as soon as I can, I removed the gauge cluster again as the tacho needle was still bouncing around a bit but it was much better than before already.  I also found some cracks on all 4 tires inner and outer sidewalls. Apparently these tires should 't be parked on for extended periods or be kept under 0 degrees during storage, which I did not know. Clearly the previous owner didn't look into those details either, he probably bought them just cause they are cool semi-slicks. I'm just wondering how tf I am supposed to reach 30-80 degree tire temperatures on the public road consistenly, these tires were never going to work for my use case. I'll probably order Continental SportContact7 ones as these are the best allround summer tire available right now and I don't think I'll need anything crazier for now. Do let me know if you have experience with various tires and which ones you recommend.
×
×
  • Create New...