Jump to content
SAU Community

Intercooler Questions

Damo_c

By Damo_c,
in Engines & Forced Induction

 Share

Recommended Posts

Damo_c Collaborator

Damo_c

Posted
Posted

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
Cubes Grand Master

Cubes

Posted
Posted

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.

Damo_c Collaborator

Damo_c

Posted
  • Author
Posted (edited)

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
R31Nismoid Grand Master

R31Nismoid

Posted
Posted

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.

W0rp3D Grand Master

W0rp3D

Posted
Posted
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.

KiwiRS4T Grand Master

KiwiRS4T

Posted
Posted
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).

Cubes Grand Master

Cubes

Posted
Posted

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.

Damo_c Collaborator

Damo_c

Posted
  • Author
Posted

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
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • MBS206
      Recommendation for engine oil funnel spill free

      By MBS206 · Posted

      I thought I'd come back and add something I JUST learned. A Toyota LandCruiser with a 1HZ, mates perfectly with a bottle of Nulon brake fluid. As in, it perfectly screws in. Great make shift funnel when you cut the bottom of it off. This may work for your Corolla.   Unfortunately, tipping a 10L drum is much harder than a 4 to 6L bottle, and they no longer include the easy pour tap which was just perfection to use previously.  
    • EndZee
      Fuel Pump Control Module & Dropping Resistor

      By EndZee · Posted

      Guys since i bought r33 gts25t coupe 1994 automatic a/t(manual swap 350z gearbox)  all i got is problems, always problems. Lets start with that when i turn key into ignition(ON) fuel pump doesnt always works. Sometimes i have to turn key twice Off/on/off/on until it primes. Its new, dw300 - 340lph. My gearbox broke so i did gearbox swap, install different intake manifold, injectors and i take pipes. Car was sitting in garage for more than half a year. I did assembly all not that long ago and when i turn ignition cant hear prime. All of sudden it stopped working. Theres many videos on YouTube how to make relay mod on r33 straight from battery so i did and it doesnt work! 😰 30 - battery positive  87 - positive from fuel pump to relay 85, 86 - one of two wires from original fuel pump wires(light blue, grey) and it didn’t work. so I check on ignition and took original BLUE relays wires from trunk, next to fuses. (I believe it’s IGN+ and ECU pin 18. it didn’t work…  tried connecting (IGN+ from og relay) and (ECU 104 from 1of4 FPCM wires) to my new relay 85/86 and it didn’t work.  I unplug FPCM. Didn’t work. im thinking what’s wrong   fuel pump is working, if I leave IGN+ on 85 and 86 straight to ground it works but it’s just nonstop. Since it getting constant 12v after key in ON. light blue wire gives me 6-8v.  so how this should be connected? What causing ECU not giving — on pin? Or I did sth wrong and that’s why it doesn’t work? I need negative signal on ECU that control fuel pump. What this should be?
    • Duncan
      M35 Brake caliper replacement

      By Duncan · Posted

      You can use your VIN to look up the factory part number somewhere like amayama, and then look to order new if necessary. https://www.amayama.com/en/genuine-catalogs/nissan Depending on price you might want to rebuild instead. @GTSBoy I had an interesting insight into US market parts when the Titan rear calipers were sticking. New calipers were dirt cheap, about 20% more than a rebuild kit....they are just considered throw away maintenance items
    • Duncan
      Most women will agree that parking is the most taxing part of driving

      By Duncan · Posted

      Funny, but really not funny. Thank god (most) f the world has moved on since then
    • Duncan
      Jacks that fit under GTR lips that can reach the subframe?

      By Duncan · Posted

      Lots of votes for driving onto a plank first; that is the quickest way I've found, 25mm is enough for my case but that will vary by car It also depends where you are going for. On the 32 I can get to the rear diff with my floor jack if I do that end first, and get it up on stands. Then I lift the front from either front tow hook as high as needed, also onto stands. Sometimes I need a small lift on the other tow hook to get it level enough If I do the front first I can't get to the rear diff because of the angle of the car Other options are getting to the front mount of the rear subframe from in front of the wheel (if only lifting one side, or just do both which is a bit of a pain compared to one lift from the diff), or also the gearbox cross member mount on the driver's side if you are  just trying to lift the driver's side. I This is the jack I use; it says 75mm clearance but of course that is only on the lower section so if you have to reach too far in like the diff you still get stuck. https://www.snapon-bluepoint.com.sg/category/Floor-Jacks/product/Floor-Jack,-2-Ton-Low-Profile
×
×
  • Create New...