Jump to content
SAU Community

Help! Loss Of Power, Strange Noise

MBS206

By MBS206,
in Engines & Forced Induction

 Share

Recommended Posts

MBS206 Grand Master

MBS206

Posted
Posted (edited)

Hey all...

I need help.

As of late my car has been back firing a fair bit (From bad plugs, plus I caused it to a few times also)

Now, the car has a new strange noise to it (It had NONE before), it sounds a touch like someone attempting to blow a whole heap of air through as traw, but, the strange thing is, I'm having ZERO pressure loss.

When I boot it, the car just won't pull at all, feels like a complete dog, and makes that weird noise.

Now, the car "seems" to drive like normal down low in the rev range, on low throttle, although, of late, I've noticed that the car is needed more and more throttle to get moving along, I used to cruise off with 10mmHg, without an issue, now I'm needing to actually bring the car up to around 2-3PSi of boost to get it moving.

When moving it, the car just feels so slow, and pathetic.

The car has:

3" Turbo Back exhaust

FMIC

Boost controller (set to 6PSi low and 10PSi high)

All new intake piping

Lightweight flywheel

Splitfire Coils

On the dyno, the car read a AFR of around 11.8 - 12.0 on a stock ecu, so either fuel filter needs replacing, or pump is dieing (i've been told by people on here, most likely pump, so it's getting replaced soon)

Car will be getting serviced this weekend (oil, filters, sparkys)

The car doesn't misfire at all.

Does this sound like a dead/collapsed cat? I'll be getting another compliance cat to throw on soon just in case it is my cat.

It doesn't seem to be a vac leak, as it doesn't have issues when on boost except lacking power, and doesn't miss etc.

Car just has strange noise whilst on boost with no power.

Edit: Car is an R33 GTS-t Series one.

Edited by MBS206
Link to comment
https://www.sau.com.au/forums/topic/163104-help-loss-of-power-strange-noise/
Share on other sites
MBS206 Grand Master

MBS206

Posted
  • Author
Posted

The intake piping is all stainless steel.

The piping has been on there for a while, so not new new, just not stock.

It just sounds like somewhere around enginebay on passenger side, towards underneath the car as a major air rush, like massive turbulence etc.

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

    • Rezz
      DeAgostini 1/8 scale BNR32 Nissan Skyline GT-R Nismo

      By Rezz · Posted

      Starting with issues 1 - 5, we have already run into a problem...!  Issue #4 contained 2x front brake calipers, instead of 1 caliper and 1x steering knuckle. Will have to call DeAgostini on Monday to sort it out. Anyway here's some photos.  Issue #1 is the front bumper, headlights and number plate. Issue #2 is the front wheel (with "We produced with spartan air." text on the centre cap!) and tyre, the front lip spoiler and cylinder head cover with ignition coils under the centre cover... which will never be seen again. Issue #3 is the bonnet and cylinder head. Issue #4 is the front strut, brake disc (with laser etched metal discs) and brake caliper. I stopped here because of the issue with the missing steering knuckle.  Next update will be #5 - #10 in a few weeks.
    • Rezz
      DeAgostini 1/8 scale BNR32 Nissan Skyline GT-R Nismo

      By Rezz · Posted

      DeAgostini is one of a few companies that release quite large (the largest commonly available size actually) 1/8 scale models in a series of weekly issues over 100 - 110 instalments.  They release different models for different markets and DeAgostini Japan have release the BNR32 Skyline GT-R Nismo last month. I've made two of these 1/8 scale sized cars (one an R35 GT-R from 2012 - 2014, the other I'm just about halfway through, a BNR34 Skyline GT-R from the 2Fast 2Furious movie) so when this R32 was announced there was no way I could ignore it as it's my favourite out of all Nissans.  Each issue costs around $20 so it costs about $2.2K when completed. I suppose it is very expensive for what it is, but the quality and details are really very good, and there are many "gimmicks" like fully functioning exterior and interior lights operated with a remote control, working steering, all doors/bonnet/boot/fuel lid open and close, the side mirrors fold in and it even has a speaker for the engine revving sounds when you turn the lights on.  Each issue comes with a magazine that tells the story of the BNR32 Skyline GT-R Nismo from the first design stages of the BNR32 to Group A homologation and the various racing version that were run in the Japanese Group A and JGTC, and Australian Group A.  So I plan to update the build in this thread 5 issues at a time.  https://deagostini.jp/r32/?srsltid=AfmBOooKjxDc4EUK2rmXqMBPgyHfFJ24s4oEPJBNpnF-lFlsRoW0PE6P
    • Predator1
      Billet Merge Collector for manifold

      By Predator1 · Posted

      As per title.. has anyone used so far? Keen to hear results, comparisons. In the market for a new mani for my new turbo. Any issues cracking?
    • MBS206
      Help Understand GTT Boost Setup

      By MBS206 · Posted

      Re read everything that has been written about this in this thread.. Let us know if you're still confused.
    • joshuaho96
      Help Understand GTT Boost Setup

      By joshuaho96 · Posted

      This would be a new pump with new gears. I'm just unclear on whether it's a good idea to run more oil pump flow if you don't actually need said flow. Oil level is set a minute or so after shutting off a warm engine so wouldn't the high RPM oil level in the sump end up lower all things equal? Plan is OEM clearances, main concern in my mind is whether the OEM pump can keep up with the flow requirements of any additional oil coolers.
×
×
  • Create New...