Jump to content
SAU Community

Recommended Posts

Ok so ive installed my fmic and just went for a drive and have noticed a few things.

1st question - should the pipe going into the cooler at the bottom right (looking at the front of the car) be hot and the bottom left be cold or the other way around?

2nd question - ive wound my t boost all the way down and im still hitting close to 12 pound by 3.5 k but doesnt pull as hard as when i had the stock cooler in, it just gathers boost slowly instead of bang its there, is this right?

3rd question - Is there anyway i would know if i have it done the install wrong? eg, different sounds

4th question - My car now idles around 1k where as before it would sit about 800rpm, is this cos of the cooler?

5th - Do i need to do the self learn on idle again with the pfc, it is untuned atm?

Thanks

Link to comment
https://www.sau.com.au/forums/topic/232484-intercooler-questions/
Share on other sites

If its idling high check for a loose hose clamp or vac leaks.

Might be worth grabbing a can of start ya bastard and spraying it around the fmic and all joins to see if there is a vac leak.

A fmic will soften the power delivery. I also was a tad dissapointed when I first went an fmic. BUT what it does allow you to do is run a little more boost and make more consistent power after you give it a hiding. Prior to the fmic mine felt quite crappy in third gear after I had given it a few full throttle runs.

I know itl be better in the long run with a tune and when i get my new turbo (gota still save a bit more) but i just didnt think it would be so different, it feels like ive lost power and not gained any. Soapy water around the clamps would do a similar thing wouldnt it, if checking for leaks? The blow off sounds sooo much better, bugger putting as aftermarket one on now!

Edited by Damo_c

1. Yes

2. Your running a larger cooler, more boost and no tune. Of course its not gonig to be great

3. Not really

4. Vac leak maybe, as stated.

5. No, but that comes as no surprise with point #2. - YOU SHOULD NOT BE TRYING TO HIT 12PSI UNTUNED.

YOU SHOULD NOT BE TRYING TO HIT 12PSI UNTUNED.

So what are you trying to say, that i should not be running a hi flow (to4 front vg30 rear) at .9bar with standard injectors, fuel pump, afm and ecu?

I think im at the limit though, breaks down when it hits 1bar so when it spiked to 1.2 it was not happy at all.

it may be wrong but from what i have read an untuned pfc is at about the same level as a standard ecu, is this wrong?

I don't know about that but... standard ECU is not much good once you start modifying the engine. The point of a PFC is that you can change timing, Air/fuel ratios etc - untuned its just a waste of $$$ ( and if you've bought it second hand it could have a tune suited to a set-up which is quite different from what you have and could in fact be worse than your fact ecu).

The maps are basically a direct copy HOWEVER the load points used for a given airflow value is slightly off as the PFC runs a 20x20 vs the std ecu's 16x16 load map.

As a result the pfc usually ends up running a tad more ignition at wot which usually causes the car to det. In my experience anyway. Depends on the level of tune/mods/boost. Would likely be fine for a car running std boost.

Yes it is untuned, i was guna save some money for a turbo then a tune. I drive the car very easy at the moment. I dont wanna waste getting a tune then in 2 months having to get another tune after getting the turbo. I hit 12 psi maybe 5 times since ive had the pfc put in, yeah i am risking a bit of engine damage but when the car is my daily driver and i need to floor it a bit to let a cop go thru or something like that, which happened only a week or so ago, so be it, but ive been very careful as to change at about 2800-3000 light accelaration so bugger all boost. The tune will be happening very soon cos now youve gotten me all worried. Gota use the left over moeny from my wedding to do so. Ive got the t boost wound all the way down but its still boosting up. The pfc is brand new so there is not another cars tune on it.

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

    • Wideband is worth setting up if only for tuning purposes. I would not mess with the ignition system unless there's a misfire. HKS crank trigger is popular out here for the relatively easily sourced Denso crank sensor, not a bad idea to install as well regardless of power level on a standalone. Boost leak test is worth thinking about. Oil pressure sensor tied to a fuel cut isn't a bad idea either. Getting the tune figured out is a good idea. Without putting eyes on it and getting under it there's no way for us to tell you exactly what it needs but most likely you're down to the last 10% that will make a big, big difference in how happy you are with the car.
    • Doing a refresh of my 33 and can see a few websites stating they sell the entire main carpet for our cars, but they all have generic photos which is fine, i understand they are custom made to order.  Just seeing if anyone has got it done or had any experience with this, as i would only want to do it if the fit and finish was as good as oem https://carmatsdirect.com.au/products/moulded-carpet-or-vinyl-for-nissan-skyline-r33-1993-1998-coupe https://knoxautocarpets.com.au/moulded-carpets/nissan/skyline/skyline-r-33-1993-1998/
    • Any plans for E85? If so, add flex fuel sensor.   I'd probably add in the sensors I mentioned above if the Link will support using them for engine protection. With water pressure, you need to be able to effectively set it that "If temp > X, and pressure = atmospheric, shutdown" as at running temp, you should be able to read pressure in the cooling system. If pressure suddenly disappears, it means the water went some where, and this is a quicker reaction than waiting on water temp to go up (Which, can take a little longer than you'd like, considering it now has to wait for hot air to heat it up) Oil pressure, Oil temp, both would be on my list too if you're looking to add sensors. Wideband O2. And at least one EGT sensor. If you're feeling deluxe, put in individual runner EGTs. Single EGT sensor is more so forget about a specific number, get used to "What is normal EGTs", and then keep an eye on it, if it starts going away from "normal" it's a sign something is wrong (Also, things like the tune can still start going out of spec, but EGTs may not show it, for example one injector starts running leaning, so ECU richens everything up, now 5 out of 6 cylinders are rich, and running cool, with one cylinder lean and running hotter, so it's not perfect) Then there is your other things to look at non sensor related, but you may have already done, or have underway, and that would be things like building a sump for more oil, and better oil control under high G-Forces (Cornering, brakes, acceleration). Basically, the above is worth looking/thinking about, if the ECU can do protective stuff with it, and you continue to use it how you are (Drive it to the track, thrash it, drive home, repeat once every 3 to 4 months)
    • Can also confirm these work a treat for most balljoints and bushes. If you have access to a big rattle gun, they make the job so much easier and quicker, compared to using a socket wrench or shifter on the c-clamp 👍
    • Its sort of street but got used for circuit sprints on account of I never drive it on the road because I dont have the time to spare. So it usage was sits around for months at a time then gets driven either 50 or 250 kms to the track followed by 20 laps followed by 50 or 250kms home followed by stuck in the shed until next time. So yeah neither fish nor fowl. Just dont want to break it on the track as a preference. Hence the fairly short sensor/mod list. Probably more worried about it pinging itself to destruction more so than anything oil related.
×
×
  • Create New...